CN119814128B - Internet of things information transmission method and system in low-orbit satellite Internet of things - Google Patents
Internet of things information transmission method and system in low-orbit satellite Internet of things Download PDFInfo
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Abstract
The invention discloses an internet of things information transmission method and system in a low orbit satellite internet of things, which relate to the technical field of the internet of things and comprise the steps that each internet of things terminal generates a corresponding pilot sequence according to an identity ID of the internet of things terminal, and a quantum key is established between the internet of things terminal and a satellite terminal; the method comprises the steps of acquiring data to be transmitted through a sensor data interface, carrying out primary encryption and secondary encryption on the data by using an established quantum key, monitoring the attitude and heading information of a vehicle in real time, adjusting the pitching and azimuth angles of a two-dimensional phased array antenna according to the position of a synchronous satellite, sending the finally encrypted data to a middle-low orbit communication satellite through the adjusted two-dimensional phased array antenna, and monitoring the link quality in real time.
Description
Technical Field
The invention relates to the technical field of the Internet of things, in particular to an Internet of things information transmission method and system in a low-orbit satellite Internet of things.
Background
With the rapid development of internet of things (IoT) technology, particularly the advancement of low-orbit satellite communication technology, a new solution is provided for information transmission in the global scope. However, the conventional internet of things information transmission method faces many challenges in terms of security, reliability and efficiency. Particularly in remote and dynamic environments, such as in a vehicle moving scenario, how to ensure the security of data transmission, reduce multipath interference and improve link quality is a major issue. Furthermore, existing encryption approaches are difficult to defend against quantum computing attacks, and lack efficient means to optimize antenna beam pointing in real-time to accommodate rapidly changing environmental conditions.
The shortcomings of the related technology are mainly characterized in that on one hand, the traditional encryption method has limited defending capability on quantum computing attacks, so that sensitive data has leakage risks in the transmission process, and on the other hand, under a complex environment such as an urban canyon or an area with obvious multipath effect, the traditional phased array antenna beam pointing adjustment strategy cannot meet the requirements of efficient and accurate data transmission.
Disclosure of Invention
The present invention has been made in view of the above-described problems occurring in the prior art.
Therefore, the invention provides an Internet of things information transmission method in the low orbit satellite Internet of things, which solves the problems that an encryption means in the traditional Internet of things information transmission method is weak in quantum attack resistance and a phased array antenna beam pointing optimization is not suitable for a dynamic environment.
In order to solve the technical problems, the invention provides the following technical scheme:
in a first aspect, the invention provides an information transmission method of the internet of things in the low orbit satellite internet of things, which comprises the steps that each internet of things terminal generates a dynamic pilot sequence through quantum fingerprints fused with identity IDs, and a quantum key based on space-time correlation is established with a satellite terminal;
data to be transmitted are collected through a sensor data interface, and three-layer heterogeneous encryption is carried out on the data to be transmitted by using the established quantum key;
introducing a digital twin model of the vehicle, monitoring the attitude and heading information of the vehicle in real time, and dynamically optimizing the beam pointing direction of the two-dimensional phased array antenna according to the position of the synchronous satellite;
Transmitting the finally encrypted data to a medium-low orbit communication satellite through an optimized two-dimensional phased array antenna, and sensing the link quality based on a quantum invisible state transmission principle;
the medium-low orbit communication satellite receives the encrypted data and then forwards the encrypted data to the ground station, the ground station decrypts the data by using the same quantum key and the same encryption algorithm, and the integrity of the received data is verified by a hash verification mechanism resisting quantum computation.
As a preferred scheme of the information transmission method of the Internet of things in the low-orbit satellite Internet of things, the method comprises the following steps that each Internet of things terminal generates a dynamic pilot sequence by fusing the quantum fingerprints of the identity IDs,
Mapping the identity ID of the terminal of the Internet of things into a binary number group with a fixed length, and injecting an entropy source of a quantum random number generator to form a mixed seed;
using a linear feedback shift register as a random sequence generation algorithm, initializing a quantum logic gate array by using a mixed seed, and performing non-deterministic bit flipping through a quantum tunneling effect to generate a quantum fingerprint seed;
Updating the state of the quantum logic gate array bit by bit, dynamically changing the feedback coefficient of the register through quantum tunneling effect, and generating a pseudo-random sequence with non-periodic characteristics;
quantum Bei Li curvature modulation is introduced, and the electronic wave function of the two-dimensional material is controlled to enable the phase of the sequence to generate topology protection characteristics along with the space position, and the pseudo-random sequence is mapped to a complex domain to generate a pilot sequence resistant to multipath interference.
As a preferable scheme of the information transmission method of the Internet of things in the low-orbit satellite Internet of things, the method for establishing the quantum key based on space-time correlation comprises the following steps,
The method comprises the steps that an Internet of things terminal sends a pilot sequence to a satellite terminal, and the satellite terminal verifies quantum coherence of pilot through a photonic crystal fiber channel to obtain quantum dispersion parameters of a current channel;
the terminal of the Internet of things carries out quantum state modulation according to the quantum dispersion parameters, and the modulated photon state code is sent to the satellite terminal in the orbital angular momentum dimension;
The satellite end adopts a single photon detector array to carry out quantum measurement, and returns a measurement result through quantum invisible transmission state compensation channel loss, and the terminal of the Internet of things calculates a shared secret key by using a quantum recursion error correction protocol.
The invention relates to a preferable scheme of an information transmission method of the Internet of things in the low orbit satellite Internet of things, which comprises the following steps of collecting data to be transmitted through a sensor data interface, carrying out three-layer heterogeneous encryption on the data to be transmitted by using an established quantum key,
Initializing a sensor interface, periodically collecting data to be transmitted, and adding a quantum time stamp;
Dividing a data packet to be transmitted into data segments with fixed length, and adding a quantum fingerprint verification tag to each segment;
Converting the data segment of the additional quantum fingerprint verification tag into a quantum bit state by using a shared secret key, and generating superposition photons through wave plate modulation;
Sending superposition photon flow and auxiliary information through classical channels, and synchronously transmitting quantum fingerprint check labels through quantum channels to obtain first-layer encrypted data;
deriving a lattice cryptographic key from the shared key, and generating an AES variant algorithm resisting quantum attack through a key derivation function;
performing quantum AES variant-resistant encryption on the first-layer encrypted data to generate second-time encrypted data;
and packaging the second-layer encrypted data into a space-time enhancement data packet, embedding Beidou time service second pulse, accelerometer vibration spectrum and satellite orbit parameters, and carrying out mathematical unclonability protection on the time enhancement data packet by using a quantum key stream generator of a number theory encryption algorithm based on the shortest vector problem in an ideal lattice to generate final encrypted data.
The invention relates to a preferable scheme of an information transmission method of the Internet of things in the Internet of things of low orbit satellites, wherein, introducing a digital twin model of a vehicle to monitor the gesture and heading information of the vehicle in real time, dynamically optimizing the beam pointing of a two-dimensional phased array antenna according to the position of a synchronous satellite comprises the following steps,
Acquiring real-time attitude data from a six-axis IMU, starting a digital twin model of the vehicle, and predicting attitude change in a short time;
combining high-precision measurement data of the quantum gyroscope, and fusing a prediction result and real-time data through a Kalman filtering algorithm to generate a corrected attitude estimation value;
calculating an initial pitch angle and an azimuth angle according to ephemeris data of the synchronous satellite and the position of the terminal;
Introducing a quantum fluctuation correction factor, correcting the initial pitch angle and the azimuth angle, comparing the initial pitch angle and the azimuth angle with the corrected attitude estimation value, generating a final pointing angle, and compensating signal distortion in a low-rail environment;
and generating a protection instruction by the adjustment instruction of the final pointing angle through primary quantum encryption and three SHA-3 hashes, and sending the protection instruction to a two-dimensional phased array antenna control unit to drive the self-adaptive beamforming chip to adjust the array phase.
The invention relates to a method for transmitting information of Internet of things in the Internet of things of low orbit satellites, which comprises the following steps of transmitting final encrypted data to a medium-low orbit communication satellite through an optimized two-dimensional phased array antenna, sensing link quality based on a quantum invisible state transmission principle,
Quadrature amplitude modulation is carried out on the final encrypted data, a quantum noise substrate based on a single photon source is inserted, and a modulation signal is generated;
Up-converting the modulation signal from the baseband to a required high frequency band by using an up-conversion module to obtain a high frequency signal;
Transmitting the high-frequency signals to the middle-low orbit communication satellite through the beam direction of the two-dimensional phased array antenna after adjustment;
carrying out quantum signature on the signal-to-noise ratio and the bit error rate by utilizing the quantum key;
setting according to signal-to-noise ratio and bit error rate a signal-to-noise ratio threshold and a bit error rate threshold;
constructing an anomaly detection model based on a quantum invisible state transmission principle, and considering that a link has an interruption risk when the signal-to-noise ratio is smaller than a signal-to-noise ratio threshold and the bit error rate is larger than a bit error rate threshold;
Establishing a standby link according to the current geographic position and satellite coverage conditions, and adjusting the beam direction of the two-dimensional phased array antenna to lead the two-dimensional phased array antenna to point to the standby link;
the state of the main link is continuously monitored, and when a link quality degradation is detected, a link switching operation is immediately performed, data transmission to the main link is stopped, and data transmission to the standby link is started.
The invention relates to a method for transmitting information of Internet of things in low orbit satellite Internet of things, which comprises the steps that a medium-low orbit communication satellite receives encrypted data and forwards the encrypted data to a ground station, the ground station decrypts the data by using the same quantum key and encryption algorithm, and the integrity verification of the received data by a hash verification mechanism of quantum computation resistance comprises the following steps,
The satellite end receives high-frequency signals from terminal equipment of the Internet of things through an antenna system, and a down-conversion module is used for converting the received high-frequency signals back to baseband signals;
demodulating and decoding the baseband signal according to the transmission protocol, and recombining the baseband signal into an original data packet;
The satellite terminal selects a target ground station to forward the received data packet according to the current geographic position and the network topology structure;
The ground station receives the data packet forwarded from the satellite through the communication interface, verifies source legitimacy by using the quantum key encapsulation engine, extracts the shared key, performs quantum signature decryption and recovers the quantum AES variant-resistant key;
the first layer decrypts the space-time enhancement data packet restored by the quantum invisible state transmission reverse process, and verifies the quantum fingerprint verification tag;
decrypting the encrypted data of the second layer of AES-Lattice by using the reverse operation of the Lattice cryptography, and recovering the data segment encrypted by the quantum invisible transmission state;
the third layer of decryption is to obtain an original data segment by utilizing the inverse operation of a number theory encryption algorithm;
calculating a quantum-resistant hash value of the decrypted original data segment by using a hash function, and comparing the quantum-resistant hash value with an expected hash value;
when the two hash values are equal, the data is considered to be complete and have no errors, and when the two hash values are unequal, a zero knowledge proof retransmission mechanism is started to request the terminal to retransmit part of the hash;
and formatting the finally decrypted and verified data and storing the data in a database.
In a second aspect, the invention provides an information transmission system of the Internet of things in the low orbit satellite Internet of things, which comprises an authentication key module, wherein each Internet of things terminal generates a dynamic pilot sequence through a quantum fingerprint integrated with an identity ID, and establishes a quantum key based on space-time correlation with a satellite terminal;
the data encryption module is used for acquiring data to be transmitted through a sensor data interface and carrying out three-layer heterogeneous encryption on the data to be transmitted by using the established quantum key;
the attitude control module is used for introducing a digital twin model of the vehicle, monitoring the attitude and heading information of the vehicle in real time and dynamically optimizing the beam pointing direction of the two-dimensional phased array antenna according to the position of the synchronous satellite;
The signal processing module is used for transmitting the finally encrypted data to the medium-low orbit communication satellite through the optimized two-dimensional phased array antenna, and perceiving the link quality based on the quantum invisible state transmission principle;
And the decryption verification module is used for forwarding the encrypted data received by the medium-low orbit communication satellite to the ground station, decrypting the data by the ground station by using the same quantum key and encryption algorithm, and carrying out integrity verification on the received data by a hash verification mechanism resisting quantum computation.
In a third aspect, the invention provides a computer device, comprising a memory and a processor, wherein the memory stores a computer program, and the computer program when executed by the processor realizes any step of the method for transmitting information of the internet of things in the low-orbit satellite internet of things according to the first aspect of the invention.
In a fourth aspect, the present invention provides a computer readable storage medium, on which a computer program is stored, wherein the computer program, when executed by a processor, implements any step of the method for transmitting information of the internet of things in the low orbit satellite internet of things according to the first aspect of the present invention.
The method has the advantages that the dynamic pilot sequence is generated by adopting quantum fingerprints, the quantum key based on space-time correlation is established, the information transmission safety of the Internet of things is effectively enhanced, the problem that a traditional encryption mode is vulnerable to quantum computing is solved, furthermore, the three-layer heterogeneous encryption mechanism combines quantum physical characteristics, the confidentiality in the data transmission process is improved, the resistance to quantum attack is enhanced by using advanced algorithms such as lattice cryptography, and meanwhile, the real-time optimization of the beam pointing of the two-dimensional phased array antenna is realized by introducing the digital twin model of the vehicle, the accuracy and efficiency of data transmission are greatly improved, and particularly in a dynamic environment, the beam direction can be timely adjusted by the optimization measure according to the change of the gesture and heading of the vehicle, the signal interference is reduced, and the high-quality data transmission is ensured.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for the description of the embodiments will be briefly described below, it being obvious that the drawings in the following description are only some embodiments of the present invention, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a flowchart of an internet of things information transmission method in the low orbit satellite internet of things in embodiment 1.
Fig. 2 is a system diagram of an information transmission system of the internet of things in the low orbit satellite internet of things in embodiment 1.
Detailed Description
In order that the above-recited objects, features and advantages of the present invention will become more readily apparent, a more particular description of the invention will be rendered by reference to specific embodiments thereof which are illustrated in the appended drawings.
In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, but the present invention may be practiced in other ways other than those described herein, and persons skilled in the art will readily appreciate that the present invention is not limited to the specific embodiments disclosed below.
Further, reference herein to "one embodiment" or "an embodiment" means that a particular feature, structure, or characteristic can be included in at least one implementation of the invention. The appearances of the phrase "in one embodiment" in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments.
Embodiment 1, referring to fig. 1 and fig. 2, is a first embodiment of the present invention, and the embodiment provides a method for transmitting information of internet of things in a low-orbit satellite internet of things, which includes the following steps:
S1, each Internet of things terminal generates a dynamic pilot sequence through quantum fingerprints fused with identity IDs, and establishes a quantum key based on space-time correlation with a satellite terminal.
S1.1, each terminal of the Internet of things generates a dynamic pilot sequence through quantum fingerprints fused with identity IDs. S1.1.1 maps the identity ID of the terminal of the Internet of things into a binary number group with fixed length, and injects an entropy source of a quantum random number generator to form a mixed seed.
Further, the formation of hybrid seeds is achieved by injecting an entropy source of the quantum random number generator, in combination with the truly random numbers generated internally of the quantum random number generator, which enhances the security of the seeds, since it combines the inherent identity information of the device with the truly random, making it difficult for an attacker to predict the final seed value even if he knows part of the information.
S1.1.2, using a linear feedback shift register as a random sequence generation algorithm, initializing a quantum logic gate array by using mixed seeds, and performing non-deterministic bit flipping through quantum tunneling effect to generate quantum fingerprint seeds.
Further, the quantum fingerprint seed is generated by using a Linear Feedback Shift Register (LFSR), but unlike the conventional LFSR, the quantum logic gate array is used as a core component, the mixed seed obtained in the previous step is used for setting an initial state during initialization, and then the non-deterministic bit flip is caused by the quantum tunneling effect, so that a unique quantum fingerprint seed is generated, the quantum tunneling introduces additional uncertainty, the unpredictability and the complexity of a generated sequence are increased, and the security is improved.
S1.1.3, updating the state of the quantum logic gate array bit by bit, dynamically changing the feedback coefficient of the register through quantum tunneling effect, and generating a pseudo-random sequence with non-periodic characteristics.
Further, the states of the quantum logics are continuously updated by utilizing the quantum fingerprint seeds, and meanwhile, the feedback coefficient of the LFSR is dynamically adjusted by utilizing the quantum tunneling effect so as to generate a pseudo-random sequence with high non-periodic property, and the dynamically changed feedback coefficient ensures the high unpredictability of the sequence and effectively prevents the mode analysis attack.
S1.1.4, introducing quantum Bei Li curvature modulation, and controlling an electronic wave function of a two-dimensional material to enable the phase of a sequence to generate topology protection characteristics along with the space position, mapping a pseudo-random sequence to a complex domain, and generating a pilot sequence resistant to multipath interference.
It should be noted that by introducing the concept of quantum Bei Li curvature, the data transmission quality under complex channel conditions (such as the existence of multiple reflection paths) can be significantly improved, and the error rate can be reduced.
S1.2. establishing a quantum key based on spatio-temporal correlation comprises the steps of,
S1.2.1, the terminal of the Internet of things sends a pilot sequence to a satellite end, and the satellite end verifies quantum coherence of pilot through a photonic crystal fiber channel to obtain quantum dispersion parameters of a current channel.
It should be noted that accurate measurement of the quantum dispersion parameter is crucial for subsequent correct execution of the quantum state modulation, which directly affects the success rate of key distribution.
S1.2.2, the terminal of the Internet of things carries out quantum state modulation according to quantum dispersion parameters, and the modulated photon state codes are sent to a satellite terminal in the orbital angular momentum dimension.
Further, the quantum state adjustment and encoding are to adjust the states of the output photons, especially their Orbital Angular Momentum (OAM), according to the obtained dispersion parameters, and then emit the photons in these specific states, so that the dimension provides additional information carrying capacity, which helps to improve the overall capacity of the system, and meanwhile, the modulation strategy is customized according to the known dispersion conditions to enhance the noise resistance.
S1.2.3, the satellite end adopts a single photon detector array to carry out quantum measurement, and returns a measurement result through quantum invisible transmission state compensation channel loss, and the terminal of the Internet of things calculates a shared secret key by using a quantum recursion error correction protocol.
It should be noted that, quantum invisible state transmission technology is adopted to compensate loss possibly occurring in long-distance transmission process, and the result is fed back to the internet of things terminal, and both parties calculate the consistent shared secret key together according to the protocol agreed in advance, so that ultra-long-distance secure communication is realized, and the security and reliability of the secret key are further enhanced through recursive error correction.
S2, acquiring data to be transmitted through a sensor data interface, and carrying out three-layer heterogeneous encryption on the data to be transmitted by using the established quantum key,
S2.1, initializing a sensor interface, periodically collecting data to be transmitted, and adding a quantum time stamp.
It should be noted that quantum time stamping provides a high precision time stamp, enhancing timeliness and traceability of data, facilitating subsequent data verification and synchronization.
S2.2, dividing the data packet to be transmitted into data segments with fixed lengths, and adding a quantum fingerprint verification tag to each segment.
Further illustratively, a quantum fingerprint verification tag is a unique identifier generated by a quantum random number generator.
It should be noted that the segmentation of data improves processing efficiency, and the quantum fingerprint verification tag can be used to detect the integrity and authenticity of data, preventing data tampering.
S2.3, converting the data segment of the additional quantum fingerprint verification tag into a quantum bit state by using the shared secret key, and generating superposition photons through wave plate modulation.
It should be noted that the use of qubit states provides greater security because any unauthorized measurement changes the qustate to be detected, and waveplate modulation techniques enable efficient transmission of the qubit at the physical level.
S2.4, sending superposition photon flow and auxiliary information through a classical channel, and synchronously transmitting quantum fingerprint check labels through a quantum channel to obtain first-layer encrypted data.
It should be noted that the combination of classical channels and quantum channels takes advantage of both, classical channels providing efficient transmission capabilities, while quantum channels guarantee the security and integrity of data.
S2.5, deriving a lattice cryptography key from the shared key, and generating an AES variant algorithm for resisting quantum attack through a key derivation function.
It should be noted that the lattice cryptography key has the ability to resist quantum computing attacks, improving the long-term security of the system, and the key derivation function ensures high quality and unpredictability of the key.
S2.6, performing anti-quantum AES variant encryption on the first layer encrypted data to generate second encrypted data.
It should be noted that the anti-quantum AES variant algorithm not only maintains the high efficiency of the conventional AES, but also increases the resistance to quantum computing attacks, further improving the security of the data.
S2.7, packaging the second layer of encrypted data into space-time enhancement data packets, embedding Beidou time service second pulse, accelerometer vibration spectrum and satellite orbit parameters, and carrying out mathematical unclonability protection on the time enhancement data packets by using a quantum key stream generator of a number theory encryption algorithm based on the shortest vector problem in an ideal lattice to generate final encrypted data.
It should be noted that the additional information in the space-time enhanced data packet provides rich context, is helpful for data verification and synchronization, increases the cracking difficulty of an attacker, provides extremely high security based on the number theory encryption algorithm of an ideal lattice, and particularly ensures the uniqueness and unclonability of the data by virtue of mathematical unclonability protection aiming at quantum computing attack, and further enhances the security of the system.
S3, introducing a digital twin model of the vehicle to monitor the attitude and heading information of the vehicle in real time, dynamically optimizing the beam pointing direction of the two-dimensional phased array antenna according to the position of the geostationary satellite,
S3.1, acquiring real-time attitude data from the six-axis IMU, and starting a digital twin model of the vehicle to predict the attitude change in a short time, for example, in a few seconds).
Further illustratively, the real-time attitude data includes acceleration, angular velocity, and the like.
It should be noted that the six-axis IMU provides high-frequency and high-precision attitude data, ensures accuracy of real-time monitoring, and the digital twin model of the vehicle can adjust the antenna beam direction in advance by predicting attitude change, so that delay is reduced.
S3.2, combining high-precision measurement data of the quantum gyroscope, and fusing a prediction result and real-time data through a Kalman filtering algorithm to generate a corrected attitude estimation value.
It should be noted that, the high-precision data of the quantum gyroscope improves the accuracy of the attitude estimation, and the Kalman filtering algorithm can effectively remove noise and improve the stability of the attitude estimation.
S3.3, calculating an initial pitch angle and an azimuth angle according to ephemeris data of the synchronous satellite and the position (longitude, latitude and altitude) of the terminal.
Further, the pitch angle and azimuth angle are calculated by geometric calculation methods (e.g., spherical trigonometry).
It should be noted that ephemeris data provides accurate satellite position information, ensures accuracy of antenna pointing, and the geometric calculation method is simple and efficient and suitable for real-time application.
S3.4, introducing a quantum fluctuation correction factor, correcting the initial pitch angle and the azimuth angle, comparing the initial pitch angle and the corrected attitude estimation value, generating a final pointing angle, and compensating signal distortion in a low-orbit environment.
Further described, the quantum fluctuation correction factor is a random number generated based on the quantum mechanics principle.
It should be noted that the quantum fluctuation correction factor increases the randomness and unpredictability of the system, improves the anti-interference capability, and further improves the accuracy of the pointing angle through comparison and correction.
S3.5, generating a protection instruction by carrying out primary quantum encryption and three SHA-3 hashes on the final direction angle adjustment instruction, and sending the protection instruction to a two-dimensional phased array antenna control unit to drive the self-adaptive beamforming chip to adjust the array phase.
It should be noted that quantum encryption provides extremely high security, prevents that the instruction from being stolen or tampered, and SHA-3 hash processing has strengthened the integrality of instruction, ensures that the instruction is not revised in the transmission process, and adaptive beam forming chip can respond to the adjustment instruction fast, realizes efficient beam pointing control.
S4, transmitting the finally encrypted data to a medium-low orbit communication satellite through an optimized two-dimensional phased array antenna, sensing the link quality based on a quantum invisible state transmission principle,
S4.1, quadrature amplitude modulation is carried out on the final encrypted data, and a quantum noise substrate based on a single photon source is inserted to generate a modulation signal.
Further illustratively, the single photon source may be a semiconductor quantum dot or superconducting nanowire based device.
It should be noted that quadrature amplitude modulation provides higher spectral efficiency, is suitable for high-speed data transmission, and the insertion of a quantum noise floor increases the randomness and unpredictability of the signal, improving security.
S4.2. up-converting the modulated signal from baseband to the required high frequency band using an up-converting module, resulting in a high frequency signal, e.g. Ku-band or Ka-band.
It should be noted that the high-band signal has better penetration capability and smaller antenna size, is suitable for satellite communication, and the accurate up-conversion process ensures the quality and integrity of the signal.
S4.3, transmitting the high-frequency signals to the medium-low orbit communication satellite through the beam direction of the two-dimensional phased array antenna after adjustment.
It should be noted that, the two-dimensional phased array antenna can adjust the beam direction rapidly and flexibly, improve the communication efficiency, and the beamforming technology reduces the sidelobe interference and improves the concentration and anti-interference capability of the signals.
S4.4, quantum signing is carried out on the signal to noise ratio and the bit error rate by utilizing the quantum key.
It should be noted that quantum signatures provide extremely high security, prevent signal-to-noise ratio and bit error rate data from being tampered with, and ensure the authenticity and integrity of link quality monitoring data.
S4.5, setting a signal-to-noise ratio threshold and an error rate threshold according to the signal-to-noise ratio and the error rate, constructing an anomaly detection model based on a quantum invisible state transmission principle, and considering that a link has an interruption risk when the signal-to-noise ratio is smaller than the signal-to-noise ratio threshold and the error rate is larger than the error rate threshold.
It should be noted that the quantum invisible state transmission technology provides extremely high sensitivity and real-time performance, can rapidly detect the link quality degradation, and the quantum entanglement characteristic makes the detection result difficult to tamper.
S4.6, establishing a standby link according to the current geographic position and satellite coverage condition, adjusting the beam direction of the two-dimensional phased array antenna to point to the standby link, continuously monitoring the state of the main link, immediately executing link switching operation when the link quality is detected to be reduced, stopping transmitting data to the main link, and starting transmitting data to the standby link.
It should be noted that the backup link provides redundancy, ensures seamless switching when problems occur in the primary link, maintains communication continuity, and the real-time monitoring and fast switching operation ensures reliability and continuity of communication, reducing data loss and delay due to link interruption.
S5, after receiving the encrypted data, the medium-low orbit communication satellite forwards the encrypted data to the ground station, the ground station decrypts the data by using the same quantum key and the same encryption algorithm, and the integrity verification of the received data is carried out by a hash verification mechanism of quantum computation resistance,
S5.1, the satellite end receives the high-frequency signal from the terminal equipment of the Internet of things through the antenna system, and the received high-frequency signal is converted back to a baseband signal by using the down-conversion module.
Further illustratively, the down-conversion module includes components such as a mixer, a filter, and an amplifier.
It should be noted that the down-conversion process converts the high frequency signal into an easily handled baseband signal, facilitating subsequent demodulation and decoding, and the mixer and filter ensure signal quality and stability, reducing noise and interference.
S5.2, demodulating and decoding the baseband signal according to the transmission protocol, and recombining the baseband signal into an original data packet.
Further, in the decoding process, data is extracted from the demodulated signal using a corresponding decoding algorithm (e.g., viterbi decoding or LDPC decoding).
It should be noted that the demodulation and decoding process recovers the original data packet, ensures the integrity and accuracy of the data, and can improve the success rate and speed of data recovery by selecting an efficient decoding algorithm.
S5.3, the satellite terminal selects a target ground station to forward the received data packet according to the current geographic position and the network topological structure, the ground station receives the data packet forwarded from the satellite through a communication interface of the ground station, uses a quantum key encapsulation engine to verify source legitimacy, extracts a shared key, executes quantum signature decryption and recovers an anti-quantum AES variant key.
It should be noted that the quantum key packaging engine ensures the security and legitimacy of the data source, and the post quantum signature decryption provides a highly secure key recovery mechanism that prevents the key from being tampered with.
S5.4, the first layer of decryption restores the space-time enhancement data packet through the quantum invisible state transmission reverse process, the quantum fingerprint verification label is verified, the second layer of decryption uses the reverse operation of the Lattice cryptography to decrypt the AES-Lattice second layer of encrypted data, the data segment after the quantum invisible state transmission encryption is restored, and the third layer of decryption uses the reverse operation of the number theory encryption algorithm to obtain the original data segment.
It should be noted that the quantum invisible state transmission inverse process provides extremely high security, ensures confidentiality of data in the transmission process, checks the quantum fingerprint check label, ensures integrity and untampered data, and the lattice cryptography inverse operation provides powerful security, resists quantum computing attack, and the number theory encryption algorithm provides extremely high security, thereby ensuring confidentiality and integrity of data.
S5.5, calculating the quantum-resistant hash value of the decrypted original data segment by using a hash function, comparing the quantum-resistant hash value with an expected hash value, when the two hash values are equal, considering that the data is complete, when the two hash values are not equal, starting a zero knowledge proof retransmission mechanism to require a terminal to resend part of the hash, formatting the finally decrypted and verified data, and storing the finally decrypted and verified data in a database.
It should be noted that the hash value comparison provides a fast and efficient method of verifying data integrity, by retransmitting portions of the hash value, errors in data transmission can be effectively detected and corrected.
The embodiment also provides an information transmission system of the internet of things in the low orbit satellite internet of things, which comprises:
the authentication key module is used for generating a dynamic pilot sequence by each Internet of things terminal through the quantum fingerprint fused with the identity ID, and establishing a quantum key based on space-time correlation with the satellite terminal;
the data encryption module is used for acquiring data to be transmitted through a sensor data interface and carrying out three-layer heterogeneous encryption on the data to be transmitted by using the established quantum key;
the attitude control module is used for introducing a digital twin model of the vehicle, monitoring the attitude and heading information of the vehicle in real time and dynamically optimizing the beam pointing direction of the two-dimensional phased array antenna according to the position of the synchronous satellite;
The signal processing module is used for transmitting the finally encrypted data to the medium-low orbit communication satellite through the optimized two-dimensional phased array antenna, and perceiving the link quality based on the quantum invisible state transmission principle;
And the decryption verification module is used for forwarding the encrypted data received by the medium-low orbit communication satellite to the ground station, decrypting the data by the ground station by using the same quantum key and encryption algorithm, and carrying out integrity verification on the received data by a hash verification mechanism resisting quantum computation.
The embodiment also provides computer equipment, which is suitable for the situation of the information transmission method of the Internet of things in the low-orbit satellite Internet of things, and comprises a memory and a processor, wherein the memory is used for storing computer executable instructions, and the processor is used for executing the computer executable instructions to realize the information transmission method of the Internet of things in the low-orbit satellite Internet of things, which is provided by the embodiment.
The computer device may be a terminal comprising a processor, a memory, a communication interface, a display screen and input means connected by a system bus. Wherein the processor of the computer device is configured to provide computing and control capabilities. The memory of the computer device includes a non-volatile storage medium and an internal memory. The non-volatile storage medium stores an operating system and a computer program. The internal memory provides an environment for the operation of the operating system and computer programs in the non-volatile storage media. The communication interface of the computer device is used for carrying out wired or wireless communication with an external terminal, and the wireless mode can be realized through WIFI, an operator network, NFC (near field communication) or other technologies. The display screen of the computer equipment can be a liquid crystal display screen or an electronic ink display screen, and the input device of the computer equipment can be a touch layer covered on the display screen, can also be keys, a track ball or a touch pad arranged on the shell of the computer equipment, and can also be an external keyboard, a touch pad or a mouse and the like.
The present embodiment also provides a storage medium, on which a computer program is stored, which when executed by a processor implements the method for implementing internet of things in low-orbit satellite internet of things as set forth in the above embodiment, where the storage medium may be implemented by any type of volatile or non-volatile storage device or combination thereof, such as a static random access Memory (Static Random Access Memory, SRAM for short), an electrically erasable Programmable Read-Only Memory (ELECTRICALLY ERASABLE PROGRAMMABLE READ-Only Memory, EEPROM for short), an erasable Programmable Read-Only Memory (Erasable Programmable Read Only Memory, EPROM for short), a Programmable Read-Only Memory (PROM for short), a Read-Only Memory (ROM for short), a magnetic Memory, a flash Memory, a magnetic disk, or an optical disk.
In summary, the invention effectively enhances the safety of information transmission of the Internet of things by adopting quantum fingerprints to generate dynamic pilot sequences and establishing a quantum key based on space-time correlation, solves the problem that the traditional encryption mode is vulnerable to quantum computation, further, the three-layer heterogeneous encryption mechanism combines quantum physical characteristics, not only improves the confidentiality in the data transmission process, but also enhances the resistance to quantum attack by using advanced algorithms such as lattice cryptography, and the like, simultaneously, the real-time optimization of the beam pointing of the two-dimensional phased array antenna is realized by introducing a vehicle digital twin model, the accuracy and the efficiency of data transmission are greatly improved, and particularly in a dynamic environment, the optimization measure can timely adjust the beam direction according to the change of the vehicle gesture and heading, reduce signal interference and ensure high-quality data transmission.
It should be noted that the above embodiments are only for illustrating the technical solution of the present invention and not for limiting the same, and although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that the technical solution of the present invention may be modified or substituted without departing from the spirit and scope of the technical solution of the present invention, which is intended to be covered in the scope of the claims of the present invention.
Claims (7)
1. The internet of things information transmission method in the low orbit satellite internet of things is characterized by comprising the steps of,
Each terminal of the Internet of things generates a dynamic pilot sequence through the quantum fingerprint fused with the identity ID, and establishes a quantum key based on space-time association with a satellite terminal,
The method comprises the steps that an Internet of things terminal sends a pilot sequence to a satellite terminal, and the satellite terminal verifies quantum coherence of pilot through a photonic crystal fiber channel to obtain quantum dispersion parameters of a current channel;
the terminal of the Internet of things carries out quantum state modulation according to the quantum dispersion parameters, and the modulated photon state code is sent to the satellite terminal in the orbital angular momentum dimension;
the satellite end adopts a single photon detector array to carry out quantum measurement, and returns a measurement result through quantum invisible transmission state compensation channel loss, and the terminal of the Internet of things calculates a shared secret key by using a quantum recursion error correction protocol;
The data to be transmitted is collected through the sensor data interface, and three layers of heterogeneous encryption is carried out on the data to be transmitted by using the established quantum key,
Initializing a sensor interface, periodically collecting data to be transmitted, and adding a quantum time stamp;
Dividing a data packet to be transmitted into data segments with fixed length, and adding a quantum fingerprint verification tag to each segment;
Converting the data segment of the additional quantum fingerprint verification tag into a quantum bit state by using a shared secret key, and generating superposition photons through wave plate modulation;
Sending superposition photon flow and auxiliary information through classical channels, and synchronously transmitting quantum fingerprint check labels through quantum channels to obtain first-layer encrypted data;
deriving a lattice cryptographic key from the shared key, and generating an AES variant algorithm resisting quantum attack through a key derivation function;
performing quantum AES variant-resistant encryption on the first-layer encrypted data to generate second-layer encrypted data;
Packaging the second-layer encrypted data into a space-time enhancement data packet, embedding Beidou time service second pulse, accelerometer vibration spectrum and satellite orbit parameters, and carrying out mathematical unclonability protection on the time enhancement data packet by using a quantum key stream generator of a number theory encryption algorithm based on the shortest vector problem in an ideal lattice to generate final encrypted data;
introducing a digital twin model of the vehicle, monitoring the attitude and heading information of the vehicle in real time, dynamically optimizing the beam pointing direction of the two-dimensional phased array antenna according to the position of the geostationary satellite,
Acquiring real-time attitude data from a six-axis IMU, starting a digital twin model of the vehicle, and predicting attitude change in a short time;
combining high-precision measurement data of the quantum gyroscope, and fusing a prediction result and real-time data through a Kalman filtering algorithm to generate a corrected attitude estimation value;
calculating an initial pitch angle and an azimuth angle according to ephemeris data of the synchronous satellite and the position of the terminal;
Introducing a quantum fluctuation correction factor, correcting the initial pitch angle and the azimuth angle, comparing the initial pitch angle and the azimuth angle with the corrected attitude estimation value, generating a final pointing angle, and compensating signal distortion in a low-rail environment;
Generating a protection instruction by carrying out primary quantum encryption and three-time SHA-3 hashing on an adjustment instruction of the final pointing angle, and sending the protection instruction to a two-dimensional phased array antenna control unit to drive a self-adaptive beamforming chip to adjust the array phase;
Transmitting the finally encrypted data to a medium-low orbit communication satellite through an optimized two-dimensional phased array antenna, and sensing the link quality based on a quantum invisible state transmission principle;
the medium-low orbit communication satellite receives the encrypted data and then forwards the encrypted data to the ground station, the ground station decrypts the data by using the same quantum key and the same encryption algorithm, and the integrity of the received data is verified by a hash verification mechanism resisting quantum computation.
2. The method for transmitting the information of the Internet of things in the low orbit satellite Internet of things according to claim 1, wherein each Internet of things terminal generates a dynamic pilot sequence by fusing the quantum fingerprints of the identity IDs comprises the following steps,
Mapping the identity ID of the terminal of the Internet of things into a binary number group with a fixed length, and injecting an entropy source of a quantum random number generator to form a mixed seed;
using a linear feedback shift register as a random sequence generation algorithm, initializing a quantum logic gate array by using a mixed seed, and performing non-deterministic bit flipping through a quantum tunneling effect to generate a quantum fingerprint seed;
Updating the state of the quantum logic gate array bit by bit, dynamically changing the feedback coefficient of the register through quantum tunneling effect, and generating a pseudo-random sequence with non-periodic characteristics;
quantum Bei Li curvature modulation is introduced, and the electronic wave function of the two-dimensional material is controlled to enable the phase of the sequence to generate topology protection characteristics along with the space position, and the pseudo-random sequence is mapped to a complex domain to generate a pilot sequence resistant to multipath interference.
3. The method for transmitting the information of the Internet of things in the Internet of things of the low-orbit satellite according to claim 2, wherein the method for transmitting the finally encrypted data to the medium-low-orbit communication satellite through the optimized two-dimensional phased array antenna and sensing the link quality based on the quantum invisible state transmission principle comprises the following steps,
Quadrature amplitude modulation is carried out on the final encrypted data, a quantum noise substrate based on a single photon source is inserted, and a modulation signal is generated;
Up-converting the modulation signal from the baseband to a required high frequency band by using an up-conversion module to obtain a high frequency signal;
Transmitting the high-frequency signals to the middle-low orbit communication satellite through the beam direction of the two-dimensional phased array antenna after adjustment;
carrying out quantum signature on the signal-to-noise ratio and the bit error rate by utilizing the quantum key;
setting according to signal-to-noise ratio and bit error rate a signal-to-noise ratio threshold and a bit error rate threshold;
constructing an anomaly detection model based on a quantum invisible state transmission principle, and considering that a link has an interruption risk when the signal-to-noise ratio is smaller than a signal-to-noise ratio threshold and the bit error rate is larger than a bit error rate threshold;
Establishing a standby link according to the current geographic position and satellite coverage conditions, and adjusting the beam direction of the two-dimensional phased array antenna to lead the two-dimensional phased array antenna to point to the standby link;
the state of the main link is continuously monitored, and when a link quality degradation is detected, a link switching operation is immediately performed, data transmission to the main link is stopped, and data transmission to the standby link is started.
4. The method for transmitting Internet of things information in the Internet of things of low orbit satellite based on claim 3, wherein the step of transmitting the encrypted data to the ground station after receiving the encrypted data by the low orbit communication satellite, decrypting the data by the ground station using the same quantum key and encryption algorithm, and verifying the integrity of the received data by a hash verification mechanism of quantum computation resistance comprises the steps of,
The satellite end receives high-frequency signals from terminal equipment of the Internet of things through an antenna system, and a down-conversion module is used for converting the received high-frequency signals back to baseband signals;
demodulating and decoding the baseband signal according to the transmission protocol, and recombining the baseband signal into an original data packet;
The satellite terminal selects a target ground station to forward the received data packet according to the current geographic position and the network topology structure;
The ground station receives the data packet forwarded from the satellite through the communication interface, verifies source legitimacy by using the quantum key encapsulation engine, extracts the shared key, performs quantum signature decryption and recovers the quantum AES variant-resistant key;
the first layer decrypts the space-time enhancement data packet restored by the quantum invisible state transmission reverse process, and verifies the quantum fingerprint verification tag;
decrypting the encrypted data of the second layer of AES-Lattice by using the reverse operation of the Lattice cryptography, and recovering the data segment encrypted by the quantum invisible transmission state;
the third layer of decryption is to obtain an original data segment by utilizing the inverse operation of a number theory encryption algorithm;
calculating a quantum-resistant hash value of the decrypted original data segment by using a hash function, and comparing the quantum-resistant hash value with an expected hash value;
when the two hash values are equal, the data is considered to be complete and have no errors, and when the two hash values are unequal, a zero knowledge proof retransmission mechanism is started to request the terminal to retransmit part of the hash;
and formatting the finally decrypted and verified data and storing the data in a database.
5. An internet of things information transmission system in the internet of things of a low orbit satellite based on the internet of things information transmission method in the internet of things of a low orbit satellite according to any one of claims 1-4 is characterized by comprising,
The authentication key module is used for generating a dynamic pilot sequence by each Internet of things terminal through the quantum fingerprint fused with the identity ID, and establishing a quantum key based on space-time correlation with the satellite terminal;
the data encryption module is used for acquiring data to be transmitted through a sensor data interface and carrying out three-layer heterogeneous encryption on the data to be transmitted by using the established quantum key;
the attitude control module is used for introducing a digital twin model of the vehicle, monitoring the attitude and heading information of the vehicle in real time and dynamically optimizing the beam pointing direction of the two-dimensional phased array antenna according to the position of the synchronous satellite;
The signal processing module is used for transmitting the finally encrypted data to the medium-low orbit communication satellite through the optimized two-dimensional phased array antenna, and perceiving the link quality based on the quantum invisible state transmission principle;
And the decryption verification module is used for forwarding the encrypted data received by the medium-low orbit communication satellite to the ground station, decrypting the data by the ground station by using the same quantum key and encryption algorithm, and carrying out integrity verification on the received data by a hash verification mechanism resisting quantum computation.
6. The computer equipment comprises a memory and a processor, wherein the memory stores a computer program, and the computer program is characterized in that the processor realizes the steps of the internet of things information transmission method in the low-orbit satellite internet of things according to any one of claims 1-4 when executing the computer program.
7. A computer readable storage medium storing a computer program, wherein the computer program when executed by a processor implements the method for transmitting information in the internet of things in the low-orbit satellite internet of things according to any one of claims 1 to 4.
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