CN108832987A - Based on the active intercepting method and system of signal interference technology in UAV Communication - Google Patents
Based on the active intercepting method and system of signal interference technology in UAV Communication Download PDFInfo
- Publication number
- CN108832987A CN108832987A CN201810520135.9A CN201810520135A CN108832987A CN 108832987 A CN108832987 A CN 108832987A CN 201810520135 A CN201810520135 A CN 201810520135A CN 108832987 A CN108832987 A CN 108832987A
- Authority
- CN
- China
- Prior art keywords
- unmanned plane
- signal
- suspicious
- link
- interference
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 230000006854 communication Effects 0.000 title claims abstract description 48
- 238000000034 method Methods 0.000 title claims abstract description 48
- 238000004891 communication Methods 0.000 title claims abstract description 46
- 238000005516 engineering process Methods 0.000 title claims abstract description 36
- 230000008859 change Effects 0.000 claims abstract description 37
- 230000002452 interceptive effect Effects 0.000 claims abstract description 13
- 230000005540 biological transmission Effects 0.000 claims description 30
- 230000008054 signal transmission Effects 0.000 claims description 11
- 230000003044 adaptive effect Effects 0.000 claims description 6
- 230000015572 biosynthetic process Effects 0.000 claims description 6
- 230000008901 benefit Effects 0.000 claims description 3
- 238000004364 calculation method Methods 0.000 claims description 2
- 230000000694 effects Effects 0.000 abstract description 7
- 238000012546 transfer Methods 0.000 description 10
- 230000008569 process Effects 0.000 description 6
- 238000005265 energy consumption Methods 0.000 description 5
- 238000012544 monitoring process Methods 0.000 description 5
- 238000011161 development Methods 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000005457 optimization Methods 0.000 description 2
- 230000010363 phase shift Effects 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- 239000000523 sample Substances 0.000 description 2
- 238000009395 breeding Methods 0.000 description 1
- 230000001488 breeding effect Effects 0.000 description 1
- 239000000969 carrier Substances 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000003111 delayed effect Effects 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/14—Relay systems
- H04B7/15—Active relay systems
- H04B7/185—Space-based or airborne stations; Stations for satellite systems
- H04B7/18502—Airborne stations
- H04B7/18506—Communications with or from aircraft, i.e. aeronautical mobile service
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04K—SECRET COMMUNICATION; JAMMING OF COMMUNICATION
- H04K3/00—Jamming of communication; Counter-measures
- H04K3/80—Jamming or countermeasure characterized by its function
- H04K3/82—Jamming or countermeasure characterized by its function related to preventing surveillance, interception or detection
- H04K3/822—Jamming or countermeasure characterized by its function related to preventing surveillance, interception or detection by detecting the presence of a surveillance, interception or detection
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04K—SECRET COMMUNICATION; JAMMING OF COMMUNICATION
- H04K3/00—Jamming of communication; Counter-measures
- H04K3/80—Jamming or countermeasure characterized by its function
- H04K3/82—Jamming or countermeasure characterized by its function related to preventing surveillance, interception or detection
- H04K3/825—Jamming or countermeasure characterized by its function related to preventing surveillance, interception or detection by jamming
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Physics & Mathematics (AREA)
- Astronomy & Astrophysics (AREA)
- Aviation & Aerospace Engineering (AREA)
- General Physics & Mathematics (AREA)
- Mobile Radio Communication Systems (AREA)
Abstract
The invention discloses, based on the active intercepting method and system of signal interference technology, include the following steps in a kind of UAV Communication：Step S1 sends interference signal to suspicious unmanned plane signal receiving end by interfering link, to change the signal-to-noise ratio of suspicious traffic link；Step S2 listens to the data packet in suspicious link while emitting interference signal, and the present invention is based on signal interference technologies can enable legal unmanned plane that can carry out signal interference to suspicious unmanned plane with lowest power consumption and listen to, and reaches and most preferably listens to effect.
Description
Technical field
The present invention relates to field of communication technology, more particularly in a kind of UAV Communication based on the low of signal interference technology
Power consumption active intercepting method and system.
Background technique
In recent years, with the continuous development of science and technology, unmanned plane is widely used in real-life various complex environments.
Wherein, Low Power High Performance unmanned plane is widely used in：It is wireless from group in remotely sensed image, Post disaster relief in earthquake emergency
Taking photo by plane in the data acquisition, important sports events live streaming in net, meteorological observation, the monitoring of air network in Homeland Security etc..Nothing
It is man-machine all trades and professions be widely applied while, be also Homeland Security, social security brings huge hidden danger.Refer to unmanned plane,
Homeland Security is the significant problem for being necessarily required to discuss.Quite a few military unmanned air vehicle without other side government the case where allowing
Under other side territorial sky execute task, certainly will to the territorial security of sovereign state generate significant impact, and easily cause diplomacy punching
It is prominent, to influence world-wide safety situation.In Vietnam War, the Lightening Bug unmanned plane of U.S.'s deployment performs 3425
Cruise task, and Chinese territory is monitored.After the 9-11 attack of terrorism, U.S. government start to Afghanistan and she
In the war of clarke, other than being used to cruise by unmanned plane and monitor, it is also used to remove hostile target.Equally, unmanned plane is a large amount of
Using also resulting in certain hidden danger to social safety.On January 15th, 2017, Xiaoshan, Zhejiang International airport unmanned plane " press on towards " civil aviaton
Passenger plane event attracts wide attention.According to Xinhua News Agency, citizen Yuan uses unmanned plane, in Xiaoshan City the town Xin Jie far from airport about
Lift-off shooting sunset at 8.5 kilometers.The unmanned plane goes up to the air to 450 meters of height, has taken multiple aerial pictures, wherein including multi rack
By way of airline carriers of passengers, aerial photographing process about 10 minutes.Subsequent Yuan is controlled by the police.Disappear according to the online Mianyang channel in Sichuan
Breath report, 2 months 2 evenings in 2017, Mianyang near airports overhead find UFO, and 5, airport flight is caused to be delayed, 3
Flight is made preparation for dropping.Unmanned plane in these events has all seriously affected social safety.
To usually be listened to for the research of unmanned plane both at home and abroad at present and be considered as signal and illegally steal, research emphasis be how
Effectively prevention transmission signal be illegally accessed, however unmanned plane market fast development also provided for criminal and terrorist it is latent
Breeding ground, they can be built wireless network using unmanned plane and carry out the activities such as crime or the attack of terrorism.Therefore, government department
The demand for carrying out legal monitoring to suspicious UAV Communication constantly increases.
Therefore, it is really necessary to propose a kind of technological means, to meet the need for carrying out legal monitoring to suspicious UAV Communication
It asks.
Summary of the invention
In order to overcome the deficiencies of the above existing technologies, purpose of the present invention is to provide be based in a kind of UAV Communication
The active intercepting method and system of signal interference technology, to enable legal unmanned plane can be with lowest power consumption based on signal interference technology
Signal interference is carried out to suspicious unmanned plane and is listened to, reaches and most preferably listens to effect.
In view of the above and other objects, the present invention proposes that the active based on signal interference technology is detectd in a kind of UAV Communication
Method is listened, is included the following steps：
Step S1 sends interference signal to suspicious unmanned plane signal receiving end by interfering link, to change suspicious traffic
The signal-to-noise ratio of link；
Step S2 listens to the data packet in suspicious link while emitting interference signal.
Preferably, the active intercepting method is applied to including at least more than the legal unmanned plane of a frame and two framves or two framves can
The Lawful intercept model of unmanned plane, the suspicious unmanned plane autonomous formation flight are doubted, the legal unmanned plane is flown with desired guiding trajectory
Row.
It preferably, further include following steps before step S1：
Step S0 carries out state estimation to the transmission channel suspicious unmanned plane, between suspicious unmanned plane and legal unmanned plane,
It solves to obtain interference signal intensity using maximum-minimization problem, optimal interference signal intensity is calculated by theory of games, according to
Interference signal transmitted by the optimal interference signal intensity set-up procedure S1.
Preferably, step S0 further comprises：
Step S001 calculates legal unmanned plane with the distance between the suspicious unmanned plane as signal receiving end and changes pass
System；
Step S002 estimates suspicious link based on distance change relationship respectively and listens to link in x-th time slice
Channel gain, and obtain white Gaussian noise；
Step S003 determines that legal unmanned plane can normally listen to the condition of suspicious link signal, so that it is determined that interference letter
Number intensity；
Step S004 calculates optimal interference signal intensity according to theory of games.
Preferably, in step S002, suspicious link is obtained according to the following formula and listens to link in x-th of time slice
Channel gain：
Wherein, λ is related coefficient, for adjusting the weight between auto-correlation component and stand-alone assembly；α1And α2Respectively detect
The path loss coefficient of link and suspicious link is listened, n is the random number that white Gaussian noise generates.
Preferably, in step S003, the condition that the legal unmanned plane can normally listen to suspicious link signal is γe
(x) >=δ, wherein γe(x) signal-to-noise ratio of link is listened to for legal unmanned plane, δ is the signal-to-noise ratio for listening to link and suspicious link
Threshold value, γe(x) calculation method is as follows：
Wherein, K1,K2For two constants relevant to channel, ε is the instantaneous bit error rate of system requirements, when ρ (x) is x-th
Between Adaptive Modulation and Coding (AMC) rate in segment.
Preferably, in step S004, final optimal interference signal problem is described as follows：
subject to:
γs(x)=δ
1≤ρ≤ρmax
Wherein, γsIt (x) is signal-to-noise ratio of the suspicious link on x-th of time slice, PLIt (x) is legal unmanned plane in xth
The interference signal intensity sent on a time slice,For the maximum value of interference signal intensity.
In order to achieve the above objectives, the present invention also provides the actives based on signal interference technology in a kind of UAV Communication to listen to
System, including：
Interference signal transmission unit, for sending interference signal to suspicious unmanned plane signal receiving end by interfering link,
To change the signal-to-noise ratio of suspicious traffic link；
Unit is listened to, for listening in suspicious link while the interference signal transmission unit emits interference signal
Data packet.
Preferably, the active interception system further includes：
Optimal interference signal adjustment unit, between the biography suspicious unmanned plane, between suspicious unmanned plane and legal unmanned plane
Defeated channel carries out state estimation, solves to obtain interference signal intensity using maximum-minimization problem, is calculated most by theory of games
Excellent interference signal intensity, according to interference signal transmitted by the optimal interference signal intensity set-up procedure S1.
Preferably, the optimal interference signal adjustment unit further comprises：
Distance change relationship computing unit, for calculate legal unmanned plane with as signal receiving end suspicious unmanned plane it
Between distance change relationship；
Channel gain computing unit, for estimating suspicious link respectively based on distance change relationship and listening to link in xth
The channel gain of a time slice, and obtain white Gaussian noise；
Condition determining unit is listened to, for determining that legal unmanned plane can normally listen to the condition of suspicious link signal, from
And determine interference signal intensity；
Optimal interference signal intensity computing unit, for calculating optimal interference signal intensity according to theory of games.
Compared with prior art, the active intercepting method in a kind of UAV Communication of the present invention based on signal interference technology and
System judges whether the data transmission rate for listening to link meets by the legal unmanned plane of calculating at a distance from suspicious unmanned plane and detects
Demand is listened, by active transmission interference signal, the data transmission rate of suspicious traffic link is reduced, improves suspicious unmanned plane passively
Signal transmission power, and then the data transmission rate for listening to link is improved, satisfaction listens to demand, while the present invention utilizes optimization reason
Signal transmission power is utmostly reduced, to save under the premise of guaranteeing to listen to efficiency by the intensity for calculating interference signal
Energy consumption extends the legal unmanned plane during flying time, utmostly increases time of intercept, to obtain more interception informations.
Detailed description of the invention
Fig. 1 is the step process of the active intercepting method based on signal interference technology in a kind of UAV Communication of the present invention
Figure；
Fig. 2 is Lawful intercept model schematic applied in the specific embodiment of the invention；
Fig. 3 is the detailed flowchart of step S0 in the specific embodiment of the invention；
Fig. 4 is the system architecture of the active interception system based on signal interference technology in a kind of UAV Communication of the present invention
Figure；
Fig. 5 is the detail structure chart of optimal interference signal adjustment unit in the specific embodiment of the invention；
Fig. 6 is the flow chart that process is actively listened in the specific embodiment of the invention.
Specific embodiment
Below by way of specific specific example and embodiments of the present invention are described with reference to the drawings, those skilled in the art can
Understand further advantage and effect of the invention easily by content disclosed in the present specification.The present invention can also pass through other differences
Specific example implemented or applied, details in this specification can also be based on different perspectives and applications, without departing substantially from
Various modifications and change are carried out under spirit of the invention.
Before explaining the present invention, first several concepts according to the present invention are illustrated：In the field of communications, signal
Interference refers to be caused to damage to the reception of useful signal.Listen to refer to using instrument and equipment to enemy communication monitor.
In general, the active legal monitoring based on UAV Communication faces following problem at present：1) unmanned plane during flying
The influence to state of transmission channel such as track, speed, due to unmanned plane during flying track uncertainty and air traffic channel not
Predictability, the state of aerospace communication channels are difficult to estimate；2) intensity for how controlling interference signal in each time slot, reaches most
Excellent data interception efficiency；3) intensity for how controlling interference signal in each time slot is utmostly reduced and is interfered due to sending
Signal bring power consumption.
Fig. 1 is the step process of the active intercepting method based on signal interference technology in a kind of UAV Communication of the present invention
Figure.As shown in Figure 1, the active intercepting method based on signal interference technology in a kind of UAV Communication of the present invention, it is legal to be applied to
Unmanned plane includes the following steps：
Step S1 sends interference signal to suspicious unmanned plane signal receiving end by interfering link, to change suspicious traffic
The signal-to-noise ratio (ratio of SNR, signal and noise) of link.
The active intercepting method based on signal interference technology of the present invention, which is applied to one, has at least one legal unmanned plane
In the Lawful intercept model, one is considered without loss of generality with the Lawful intercept model of two or more suspicious unmanned planes
It flies to suspicious unmanned plane autonomous formation, with respect to linear uniform motion, distance is D for transmitting terminal and receiving end.Legal unmanned plane
It is flown with desired guiding trajectory, which is using the suspicious unmanned plane midpoint of two framves as the center of circle, and D is the semicircle of diameter, as shown in Fig. 2, can
Doubt transmitting and reception that unmanned plane carries out signal by suspicious link (Suspicious Link), legal unmanned plane (UAVL) logical
Interfering link (Jamming Link) is crossed to suspicious unmanned plane receiving end (UAVSR) signal interference is carried out, by listening to link
(Eavesdropping Link) is to suspicious unmanned plane transmitting terminal (UAVST) carry out signal listen to.In the specific embodiment of the invention
In, consider that the flight path for presetting legal unmanned plane is semicircle, but it should be noted that, the present invention based on signal interference technology
Active intercepting method is suitable for any other preset flight path.
That is, legal unmanned plane is sent to suspicious unmanned plane receiving end by interfering link and is interfered in step S1
Signal changes the signal-to-noise ratio of suspicious traffic link, that is, changes the data transmission rate (Data Rate) of suspicious link, this is just
Cause suspicious unmanned plane transmitting terminal that need to adjust transmission rate, so that meeting legal unmanned plane listens to the transmission of data required for link
Rate.
Step S2 listens to the data packet in suspicious link while emitting interference signal.Due to the data of suspicious link
The change of transmission rate, suspicious unmanned plane transmitting terminal are to keep suspicious link data transfer rate, need to change data strength of transmitted signals；
And since suspicious unmanned plane transmitting terminal changes strength of transmitted signals, to change the data transfer rate for listening to link, it is legal nobody
Machine can be listened to by listening to the suspicious unmanned plane progress signal of link pair.
Due to the influence of the environmental factors such as distance, interference signal, the data transfer rate (Date Rate) in transmission link constantly becomes
Change, listen to requirement to meet, reduce power consumption, legal unmanned plane then needs the variation according to data transfer rate, and it is strong constantly to adjust interference signal
Degree, to meet the needs of of listening to；Meanwhile the intensity of interference signal is reduced to greatest extent, to reduce legal unmanned plane energy consumption, extend
Each time of intercept.
It is thus preferable to further include following steps before step S1：
Step S0 carries out state estimation to the transmission channel suspicious unmanned plane, between suspicious unmanned plane and legal unmanned plane,
It solves to obtain interference signal intensity using maximum-minimization problem, and optimal interference signal intensity, root is calculated by theory of games
According to interference signal transmitted by the optimal interference signal intensity set-up procedure S1.
Specifically, as shown in figure 3, step S0 further comprises：
Step S001 calculates legal unmanned plane with the distance between the suspicious unmanned plane as signal receiving end and changes pass
System.
By taking Lawful intercept model shown in Fig. 2 as an example, that is, include a pair of suspicious unmanned plane autonomous formation flight, transmitting terminal and
Receiving end is D with respect to linear uniform motion, distance, and legal unmanned plane is flown with desired guiding trajectory, which is suspicious with two framves
Unmanned plane midpoint is the center of circle, and D is the semicircle of radius, here it should be noted that, due in semicircle flight path, distance change pair
Channel effect is similar, accordingly, it is considered to which the flight path for presetting legal unmanned plane is semicircle, but invention is not limited thereto,
Active intercepting method based on signal interference technology proposed by the invention is suitable for any other preset flight path, is giving
On fixed pre-set flight track, present invention contemplates that studying in same attenuation channel, to the influence of transmission signal under different distance.
Specifically, step S001 can be obtained by following formula：
Wherein, d1(x) indicate legal unmanned plane with suspicious unmanned plane signal sending end at a distance from moment x, d2(x) it indicates
Legal unmanned plane is with suspicious unmanned plane signal receiving end at a distance from moment x.
Step S002 estimates suspicious link based on distance change relationship respectively and listens to link in x-th time slice
Channel gain (channel status), and obtain white Gaussian noise N0.In the specific embodiment of the invention, it is assumed that suspicious traffic link
Communication process includes m moment, is communicated in a manner of TDMA and (present invention can be suitably applied to any other communication mode in practice),
Suspicious link can be estimated respectively by following formula and listens to link in channel gain (the channel shape of x-th of time slice
State)：
Wherein, λ is related coefficient, for adjusting the weight between auto-correlation component and stand-alone assembly；α 1 and α 2 are respectively
The path loss coefficient of link and suspicious link is listened to, n is the random number that white Gaussian noise generates.
Step S003 determines that legal unmanned plane can normally listen to the condition of suspicious link signal, so that it is determined that interference letter
Number intensity.
Legal unmanned plane can obtain the channel gain H of suspicious link in x-th of time slice by channel probe techniqueS
(x) and white Gaussian noise N0, specifically, listen to link signal-to-noise ratio γe(x) it is：
Wherein, K1,K2For two constants relevant to channel, ε is the instantaneous bit error rate of system requirements, when ρ (x) is x-th
Between Adaptive Modulation and Coding (AMC) rate in segment, wherein ρ (x) ∈ { 1 ..., ρmax}。
The condition that legal unmanned plane can normally listen to suspicious link signal is：
γe(x)≥δ (5)
Wherein, δ is the signal-noise ratio threshold value for listening to link and suspicious link, that is, listens to the signal-to-noise ratio of link not less than suspicious
Link signal-noise ratio threshold value.It can be obtained by formula (4) (5)：
Wherein, PLIt (x) is interference signal intensity of the legal unmanned plane in moment x.
Step S004 calculates optimal interference signal intensity according to theory of games.
Assuming that each suspicious data packet includes b byte, the data packet that legal unmanned plane is listened to is on x-th of time slice
Successful receiving rate be R (x), then, in m time slice, the data packet total amount that legal unmanned plane successfully listens to isIn order to guarantee that suspicious unmanned plane can not identify the interference of legal unmanned plane and listen to signal, suspicious link
SINR (signal-to-noise ratio) must be controlled on a fixed threshold value δ.Particularly, the transmitting terminal of suspicious unmanned plane uses 2 ρ
(x) quadrature amplitude modulation (QAM) mode sends signal to receiving end, and ρ (x) is the Adaptive Modulation and Coding in x-th of time slice
(AMC) rate, wherein ρ (x) ∈ { 1 ..., ρmax}.It is binary phase keying modulation method (BPSK) as ρ=1, as ρ=2,
For orthogonal phase shift keying modulation method.ρmaxIt shows for the matched modulation maximum value of code rate, what can finally be described as follows is optimal
Change interference signal problem：
subject to:
γs(x)=δ
1≤ρ≤ρmax
Wherein, γsIt (x) is signal-to-noise ratio of the suspicious link on x-th of time slice, PLIt (x) is legal unmanned plane in xth
The interference signal intensity sent on a time slice,For the maximum value of interference signal intensity.
As it can be seen that the characteristics of present invention is according to UAV Communication, realizing one kind using active perturbation technique can be used for supervising
The active intercepting method of suspicious unmanned plane signal is controlled, so that legal unmanned plane can be while interfering enemy plane communication, to enemy plane
Signal is listened to, in the present invention, firstly, enemy plane normal communication needs to meet communicating link data transmission rate not less than some
Threshold value；Secondly, legal unmanned plane, which listen to needing to meet, listens to link data transfer rate not less than some threshold value.According to
These characteristics, legal unmanned plane is by sending interference signal to enemy plane, so that the enemy plane communicating link data of normal communication transmits
Rate reduces, and enemy plane promotes the intensity for sending signal, thus meet the data communication for listening to link to guarantee normal communication
Rate enables legal unmanned plane to listen to enemy plane.
Fig. 4 is the system architecture of the active interception system based on signal interference technology in a kind of UAV Communication of the present invention
Figure.As shown in figure 4, the active interception system based on signal interference technology in a kind of UAV Communication of the present invention, it is legal to be applied to
Unmanned plane, including：
Interference signal transmission unit 401, for sending interference letter to suspicious unmanned plane signal receiving end by interfering link
Number, to change the signal-to-noise ratio (ratio of SNR, signal and noise) of suspicious traffic link.
Specifically, pass through interfering link to suspicious unmanned plane applied to the interference signal transmission unit 401 of legal unmanned plane
Receiving end sends interference signal, changes the signal-to-noise ratio of suspicious traffic link, that is, changes the data transmission rate of suspicious link
(Data Rate), this results in suspicious unmanned plane transmitting terminal that need to adjust transmission rate, so that meeting legal unmanned plane listens to link
Required data transmission rate.
Unit 402 is listened to, for listening to suspicious link while interference signal transmission unit 401 emits interference signal
In data packet.Due to the change of the data transmission rate of suspicious link, suspicious unmanned plane transmitting terminal is to keep suspicious link data
Transmission rate need to change data strength of transmitted signals；And since suspicious unmanned plane transmitting terminal changes strength of transmitted signals, to change
The data transfer rate for listening to link is become, legal unmanned plane can be listened to by listening to the suspicious unmanned plane progress signal of link pair.
Due to the influence of the environmental factors such as distance, interference signal, the data transfer rate (Date Rate) in transmission link constantly becomes
Change, listen to requirement to meet, reduce power consumption, legal unmanned plane then needs the variation according to data transfer rate, and it is strong constantly to adjust interference signal
Degree, to meet the needs of of listening to；Meanwhile the intensity of interference signal is reduced to greatest extent, to reduce legal unmanned plane energy consumption, extend
Each time of intercept.
It is thus preferable to which the active interception system in the UAV Communication of the present invention based on signal interference technology further includes：
Optimal interference signal adjustment unit, between the biography suspicious unmanned plane, between suspicious unmanned plane and legal unmanned plane
Defeated channel carries out state estimation, solves to obtain interference signal intensity using maximum-minimization problem, is calculated most by theory of games
Excellent interference signal intensity, according to interference signal transmitted by the optimal interference signal intensity adjustment interference signal transmission unit 401.
Specifically, as shown in figure 5, optimal interference signal adjustment unit further comprises：
Distance change relationship computing unit 501, calculate legal unmanned plane with as signal receiving end suspicious unmanned plane it
Between distance change relationship.
By taking Lawful intercept model shown in Fig. 2 as an example, that is, include a pair of suspicious unmanned plane autonomous formation flight, transmitting terminal and
Receiving end is D with respect to linear uniform motion, distance, and legal unmanned plane is flown with desired guiding trajectory, which is suspicious with two framves
Unmanned plane midpoint is the center of circle, and D is the semicircle of diameter, here it should be noted that, due in semicircle flight path, distance change pair
Channel effect is similar, accordingly, it is considered to which the flight path for presetting legal unmanned plane is semicircle, but invention is not limited thereto,
Active intercepting method based on signal interference technology proposed by the invention is suitable for any other preset flight path, is giving
On fixed pre-set flight track, present invention contemplates that studying in same attenuation channel, to the influence of transmission signal under different distance.
Specifically, distance change relationship computing unit 501 can be realized by following formula：
Wherein, d1(x) indicate legal unmanned plane with suspicious unmanned plane signal sending end at a distance from moment x, d2(x) it indicates
Legal unmanned plane is with suspicious unmanned plane signal receiving end at a distance from moment x.
Channel gain computing unit 502 exists for being estimated suspicious link respectively based on distance change relationship and being listened to link
The channel gain (channel status) of x-th of time slice, and obtain white Gaussian noise N0.It is false in the specific embodiment of the invention
If the communication process of suspicious traffic link includes m moment, being communicated in a manner of TDMA (present invention can be suitably applied to appoint in practice
What its communication mode), suspicious link can be estimated by following formula respectively and listen to link in the letter of x-th of time slice
Road gain (channel status)：
Wherein, λ is related coefficient, for adjusting the weight between auto-correlation component and stand-alone assembly；α1And α2Respectively detect
The path loss coefficient of link and suspicious link is listened, n is the random number that white Gaussian noise generates.
Condition determining unit 503 is listened to, for determining that legal unmanned plane can normally listen to the condition of suspicious link signal,
So that it is determined that interference signal intensity.
Legal unmanned plane can obtain the channel gain H of suspicious link in x-th of time slice by channel probe techniqueS
(x) and white Gaussian noise N0, specifically, listen to link signal-to-noise ratio γe(x) it is：
Wherein, ρ (x) is Adaptive Modulation and Coding (AMC) rate in x-th time slice, wherein ρ (x) ∈ 1 ...,
ρmax}。
The condition that legal unmanned plane can normally listen to suspicious link signal is：
γe(x)≥δ
Wherein, δ is the signal-noise ratio threshold value for listening to link and suspicious link, that is, listens to the signal-to-noise ratio of link not less than suspicious
Link signal-noise ratio threshold value.It can be obtained by above-mentioned formula：
Optimal interference signal intensity computing unit 504, for calculating optimal interference signal intensity according to theory of games.
Assuming that each suspicious data packet includes b byte, the data packet that legal unmanned plane is listened to is on x-th of time slice
Successful receiving rate be R (x), then, in m time slice, the data packet total amount that legal unmanned plane successfully listens to isIn order to guarantee that suspicious unmanned plane can not identify the interference of legal unmanned plane and listen to signal, suspicious link
SINR (signal-to-noise ratio) must be controlled on a fixed threshold value δ.Particularly, the transmitting terminal of suspicious unmanned plane uses 2ρ(x)Quadrature amplitude modulation (QAM) mode send signal to receiving end, ρ (x) is the Adaptive Modulation and Coding in x-th time slice
(AMC) rate, wherein ρ (x) ∈ { 1 ..., ρmax}.It is binary phase keying modulation method (BPSK) as ρ=1, as ρ=2,
For orthogonal phase shift keying modulation method.ρmaxIt shows for the matched modulation maximum value of code rate, what can finally be described as follows is optimal
Change interference signal problem：
subject to:
γs(x)=δ
1≤ρ≤ρmax
Wherein, γsIt (x) is signal-to-noise ratio of the suspicious link on x-th of time slice, PLIt (x) is legal unmanned plane in xth
The interference signal intensity sent on a time slice,For the maximum value of interference signal intensity.
Fig. 6 is the flow chart that process is actively listened in the specific embodiment of the invention.As shown in fig. 6, actively listening to process such as
Under：
Step 1：Suspicious unmanned plane autonomous formation flight, signal transmitting terminal, receiving end (suspicious unmanned plane) pass through suspicious chain
Road carries out normal communication, and suspicious link data transfer rate is a definite value；
Step 2：Legal unmanned plane is flown by desired guiding trajectory, into effectively range is listened to, listens to the data of link at this time
Rate is unable to satisfy the demand of listening to；
Step 3：Legal unmanned plane sends interference signal to suspicious unmanned plane signal receiving end by interfering link, to change
The data transmission rate of suspicious link is become；
Step 4：Suspicious unmanned plane transmitting terminal is to keep suspicious link data transfer rate, changes data strength of transmitted signals；
Step 5：Since suspicious unmanned plane transmitting terminal changes strength of transmitted signals, to change the data for listening to link
Rate, legal unmanned plane can be listened to by listening to the suspicious unmanned plane progress signal of link pair.
In conclusion active intercepting method and system based on signal interference technology are logical in a kind of UAV Communication of the present invention
It crosses and calculates legal unmanned plane at a distance from suspicious unmanned plane to judge whether the data transmission rate for listening to link meets the demand of listening to,
By active transmission interference signal, the data transmission rate of suspicious traffic link is reduced, suspicious unmanned plane is made passively to improve signal hair
Power is penetrated, and then improves the data transmission rate for listening to link, satisfaction listens to demand, while the present invention is calculated using Optimum Theory
The intensity of interference signal utmostly reduces signal transmission power under the premise of guaranteeing to listen to efficiency, thereby saving energy consumption,
Extend the legal unmanned plane during flying time, utmostly increase time of intercept, to obtain more interception informations.
Compared with prior art, the invention has the advantages that：
1, the characteristics of present invention is according to UAV Communication, is realized using active interference technology for monitoring suspicious unmanned plane
The purpose of signal listened to, the present invention can detect suspicious unmanned plane signal while interfering suspicious UAV Communication
It listens；
2, legal unmanned plane transmits progress to the signal of suspicious unmanned plane by the way of sending interference signal in the present invention
Interference, to change the data transmission rate of suspicious traffic link, what this interference mechanism ensure that legal unmanned plane listens to efficiency；
3, legal unmanned plane according to distance change constantly adjusts interference signal intensity in the present invention, is guaranteeing to listen to efficiency
Energy consumption is reduced to greatest extent simultaneously, time of intercept is substantially prolonged, to utmostly improve the information content for listening to acquisition；
4, the channel estimation methods of link are listened to suspicious link and in the present invention, can in emergency communication wirelessly from group
Crucial directive function is played in the selection of net equipment, communication protocol optimization；
5, using time complexity, relatively low, high stability algorithm counts optimal interference signal to the present invention
It calculates, there is preferable timeliness and stability.
The above-described embodiments merely illustrate the principles and effects of the present invention, and is not intended to limit the present invention.Any
Without departing from the spirit and scope of the present invention, modifications and changes are made to the above embodiments by field technical staff.Therefore,
The scope of the present invention, should be as listed in the claims.
Claims (10)
1. being included the following steps in a kind of UAV Communication based on the active intercepting method of signal interference technology：
Step S1 sends interference signal to suspicious unmanned plane signal receiving end by interfering link, to change suspicious traffic link
Signal-to-noise ratio；
Step S2 listens to the data packet in suspicious link while emitting interference signal.
2. the active intercepting method based on signal interference technology in a kind of UAV Communication, feature exist as described in claim 1
In：The active intercepting method is applied to the conjunction including at least more than the legal unmanned plane of a frame and two framves or two framves suspicious unmanned plane
Method listens to model, the suspicious unmanned plane autonomous formation flight, and the legal unmanned plane is flown with desired guiding trajectory.
3. the active intercepting method based on signal interference technology in a kind of UAV Communication as claimed in claim 2, feature
It is, further includes following steps before step S1：
Step S0 carries out state estimation to the transmission channel suspicious unmanned plane, between suspicious unmanned plane and legal unmanned plane, utilizes
Maximum-minimization problem solves to obtain interference signal intensity, calculates optimal interference signal intensity by theory of games, most according to this
Interference signal transmitted by excellent interference signal intensity set-up procedure S1.
4. the active intercepting method based on signal interference technology in a kind of UAV Communication as claimed in claim 3, feature
It is, step S0 further comprises：
Step S001 calculates the distance between legal unmanned plane and the suspicious unmanned plane as signal receiving end variation relation；
Step S002 estimates suspicious link based on distance change relationship respectively and listens to link in the channel of x-th of time slice
Gain, and obtain white Gaussian noise；
Step S003 determines that legal unmanned plane can normally listen to the condition of suspicious link signal, so that it is determined that interference signal is strong
Degree；
Step S004 calculates optimal interference signal intensity according to theory of games.
5. the active intercepting method based on signal interference technology in a kind of UAV Communication as claimed in claim 4, feature
It is, in step S002, obtains suspicious link according to the following formula and listen to link in the channel increasing of x-th of time slice
Benefit：
Wherein, λ is related coefficient, for adjusting the weight between auto-correlation component and stand-alone assembly；α1And α2Respectively listen to chain
The path loss coefficient on road and suspicious link, n are the random number that white Gaussian noise generates.
6. the active intercepting method based on signal interference technology in a kind of UAV Communication as claimed in claim 5, feature
It is, in step S003, the condition that the legal unmanned plane can normally listen to suspicious link signal is γe(x) >=δ,
In, γe(x) signal-to-noise ratio of link is listened to for legal unmanned plane, δ is the signal-noise ratio threshold value for listening to link and suspicious link, γe
(x) calculation method is as follows：
Wherein, K1,K2For two constants relevant to channel, ε is the instantaneous bit error rate of system requirements, and ρ (x) is x-th of timeslice
Adaptive Modulation and Coding rate in section.
7. the active intercepting method based on signal interference technology in a kind of UAV Communication as claimed in claim 4, feature
It is, in step S004, final optimal interference signal problem is described as follows：
subject to:
γs(x)=δ
1≤ρ≤ρmax
Wherein, γsIt (x) is signal-to-noise ratio of the suspicious link on x-th of time slice, PLIt (x) is legal unmanned plane at x-th
Between the interference signal intensity that sends in segment,For the maximum value of interference signal intensity.
8. based on the active interception system of signal interference technology in a kind of UAV Communication, including：
Interference signal transmission unit, for sending interference signal to suspicious unmanned plane signal receiving end by interfering link, to change
Become the signal-to-noise ratio of suspicious traffic link；
Unit is listened to, for listening to the number in suspicious link while the interference signal transmission unit emits interference signal
According to packet.
9. the active intercepting method based on signal interference technology in a kind of UAV Communication as claimed in claim 8, feature
It is, the active interception system further includes：
Optimal interference signal adjustment unit, for believing the transmission suspicious unmanned plane, between suspicious unmanned plane and legal unmanned plane
Road carries out state estimation, solves to obtain interference signal intensity using maximum-minimization problem, is calculated by theory of games optimal dry
Signal strength is disturbed, according to interference signal transmitted by the optimal interference signal intensity set-up procedure S1.
10. the active intercepting method based on signal interference technology in a kind of UAV Communication as claimed in claim 9, feature
It is, the optimal interference signal adjustment unit further comprises：
Distance change relationship computing unit, for calculating legal unmanned plane and as between the suspicious unmanned plane of signal receiving end
Distance change relationship；
Channel gain computing unit, for estimating suspicious link respectively based on distance change relationship and listening to link at x-th
Between segment channel gain, and obtain white Gaussian noise；
Condition determining unit is listened to, for determining that legal unmanned plane can normally listen to the condition of suspicious link signal, thus really
Determine interference signal intensity；
Optimal interference signal intensity computing unit, for calculating optimal interference signal intensity according to theory of games.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810520135.9A CN108832987A (en) | 2018-05-28 | 2018-05-28 | Based on the active intercepting method and system of signal interference technology in UAV Communication |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810520135.9A CN108832987A (en) | 2018-05-28 | 2018-05-28 | Based on the active intercepting method and system of signal interference technology in UAV Communication |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108832987A true CN108832987A (en) | 2018-11-16 |
Family
ID=64145752
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810520135.9A Pending CN108832987A (en) | 2018-05-28 | 2018-05-28 | Based on the active intercepting method and system of signal interference technology in UAV Communication |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108832987A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109548084A (en) * | 2019-01-17 | 2019-03-29 | 重庆邮电大学 | A kind of efficient multi-hop TDMA cut-in method of the unmanned plane ad hoc network of load balancing |
| CN109861785A (en) * | 2018-12-11 | 2019-06-07 | 广东工业大学 | A method and device for unmanned aerial vehicle cooperative communication based on physical layer security |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106155094A (en) * | 2016-08-01 | 2016-11-23 | 苏州倍声声学技术有限公司 | A kind of unmanned plane interception system |
| CN106936517A (en) * | 2015-12-28 | 2017-07-07 | 镇江高科信息科技有限公司 | A kind of automatic recognition system and its method of abnormal radio signal |
| EP3256879A1 (en) * | 2015-02-09 | 2017-12-20 | Artsys360 Ltd. | Aerial traffic monitoring radar |
| CN107968692A (en) * | 2017-11-17 | 2018-04-27 | 深圳市道通智能航空技术有限公司 | Communication method, communication device and drone for unmanned aerial vehicle |
-
2018
- 2018-05-28 CN CN201810520135.9A patent/CN108832987A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP3256879A1 (en) * | 2015-02-09 | 2017-12-20 | Artsys360 Ltd. | Aerial traffic monitoring radar |
| CN106936517A (en) * | 2015-12-28 | 2017-07-07 | 镇江高科信息科技有限公司 | A kind of automatic recognition system and its method of abnormal radio signal |
| CN106155094A (en) * | 2016-08-01 | 2016-11-23 | 苏州倍声声学技术有限公司 | A kind of unmanned plane interception system |
| CN107968692A (en) * | 2017-11-17 | 2018-04-27 | 深圳市道通智能航空技术有限公司 | Communication method, communication device and drone for unmanned aerial vehicle |
Non-Patent Citations (1)
| Title |
|---|
| WANG XIAOMING,ETC.: "PELE: Power efficient legitimate eavesdropping via jamming in UAV communications", 《2017 13TH INTERNATIONAL WIRELESS COMMUNICATIONS AND MOBILE COMPUTING CONFERENCE (IWCMC)》 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109861785A (en) * | 2018-12-11 | 2019-06-07 | 广东工业大学 | A method and device for unmanned aerial vehicle cooperative communication based on physical layer security |
| CN109548084A (en) * | 2019-01-17 | 2019-03-29 | 重庆邮电大学 | A kind of efficient multi-hop TDMA cut-in method of the unmanned plane ad hoc network of load balancing |
| CN109548084B (en) * | 2019-01-17 | 2021-11-30 | 重庆邮电大学 | Load-balanced efficient multi-hop TDMA (time division multiple Access) access method for ad hoc network of unmanned aerial vehicle |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US11924025B2 (en) | Method for performing beam failure detection in wireless communication system and apparatus therefor | |
| US11877275B2 (en) | Method for adaptively setting reference signal pattern in wireless communication system, and apparatus therefor | |
| EP3644521A1 (en) | Method for uplink transmission in wireless communication system and apparatus therefor | |
| EP3681238B1 (en) | Method for transmitting/receiving random access preamble in wireless communication system, and apparatus therefor | |
| US20210135713A1 (en) | Method and apparatus for performing beam failure recovery in wireless communication system | |
| KR20230014725A (en) | Wireless communication method using machine learning network based on on-device learning | |
| Ai et al. | 6G-enabled smart railways | |
| US20230328545A1 (en) | Waveform agnostic learning-enhanced decision engine for any radio | |
| Zhang et al. | Aeronautical central cognitive broadband air-to-ground communications | |
| Slimane et al. | A light boosting-based ml model for detecting deceptive jamming attacks on uavs | |
| CN108832987A (en) | Based on the active intercepting method and system of signal interference technology in UAV Communication | |
| Semba Yawada et al. | Performance analysis of new spectrum sensing scheme using multiantennas with multiuser diversity in cognitive radio networks | |
| CN104780541B (en) | A Cooperative Spectrum Sensing Method Against Masquerade SSDF Malicious Attacks | |
| Viana et al. | PCA-featured transformer for jamming detection in 5G UAV networks | |
| CN114745771B (en) | Safe wireless energy supply communication method and system based on unmanned aerial vehicle | |
| CN120185685B (en) | Dynamic compensation method for low-altitude complex terrain polarization signals, unmanned aerial vehicle communication device and system | |
| Kulsoom et al. | A robust carrier frequency and timing offset estimation in inter-UAV OFDM communication links | |
| CN114205050A (en) | UAV covert communication method and device | |
| Xu et al. | Covert communication with a full-duplex receiver based on channel distribution information | |
| CN119182489A (en) | Mobile covert communication system and method based on mobility and noise uncertainty | |
| Zhu et al. | Delay analysis of UAV networks with hybrid wireless and power line communication | |
| CN110401468A (en) | Context-aware convert communication system and context-aware concealed communication method | |
| CN105392203A (en) | Cooperative spectrum sensing method based on node filtering | |
| Wang et al. | Trajectory optimization for UAV-enabled covert communications | |
| KR102311298B1 (en) | Apparatus and method for updating frequengy offset |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20181116 |
|
| WD01 | Invention patent application deemed withdrawn after publication |