CN115456007A - Electromagnetic signal comparison method, device, equipment and storage medium - Google Patents

Abstract

The present disclosure provides an electromagnetic signal comparison method, apparatus, device and storage medium, which belongs to the technical field of electromagnetic environment effect, and the method comprises: acquiring a first test electromagnetic signal and a first reference electromagnetic signal, wherein the first test electromagnetic signal is generated by an electromagnetic model to be verified, and the first reference electromagnetic signal is generated by a reference electromagnetic model; translating the first test electromagnetic signal on a time axis to obtain a second test electromagnetic signal, wherein the time corresponding to the main peak value of the second test electromagnetic signal is coincided with the time corresponding to the main peak value of the first reference electromagnetic signal; selecting electromagnetic signals of the first reference electromagnetic signal and the second test electromagnetic signal in a target period as a second reference electromagnetic signal and a third test electromagnetic signal; and comparing the second reference electromagnetic signal with the third test electromagnetic signal based on the FSV method to obtain a first comparison result. The method and the device can improve the accuracy of the comparison result.

Description

Electromagnetic signal comparison method, device, equipment and storage medium

technical field

The disclosure belongs to the technical field of electromagnetic environment effects, and in particular relates to an electromagnetic signal comparison method, device, equipment and storage medium.

Background technique

Electromagnetic signals usually change rapidly with time, and the signal oscillates significantly periodically. In the study of electromagnetic environmental effects, the comparison of electromagnetic signals cannot use general statistical methods, and the Feature Selective Validation (FSV) method came into being.

The FSV method is the core method of the electromagnetic simulation effectiveness evaluation system. By acquiring two target electromagnetic signals, comparing the two target electromagnetic signals based on the FSV method, and extracting the differences in data trends and characteristics, quantitative evaluation is obtained, and the quantitative evaluation is transformed into six types of qualitative descriptions described in natural language Explanation. According to the distribution of six types of qualitative explanations, the distribution of expert evaluation results can be simulated.

When comparing two target electromagnetic signals based on the FSV method, the comparison result cannot reflect the real difference between the two target electromagnetic signals, and the comparison result is inaccurate.

Contents of the invention

Embodiments of the present disclosure provide an electromagnetic signal comparison method, device, equipment, and storage medium, which can improve the accuracy of comparison results. Described technical scheme is as follows:

In one aspect, a method for comparing electromagnetic signals is provided, the method comprising: acquiring a first test electromagnetic signal and a first reference electromagnetic signal, the first test electromagnetic signal is generated by an electromagnetic model to be verified, and the first The reference electromagnetic signal is generated by a reference electromagnetic model; the first test electromagnetic signal is shifted on the time axis to obtain a second test electromagnetic signal, and the time corresponding to the main peak value of the second test electromagnetic signal is the same as the first The time corresponding to the main peak of a reference electromagnetic signal coincides; select the electromagnetic signal of the first reference electromagnetic signal and the second test electromagnetic signal in the target period as the second reference electromagnetic signal and the third test electromagnetic signal, so The target period is the period corresponding to the main peak and multiple peaks adjacent to the main peak; based on the feature selection verification FSV method, the second reference electromagnetic signal and the third test electromagnetic signal are compared to obtain the first comparison result.

Optionally, the selecting the electromagnetic signals of the first reference electromagnetic signal and the second test electromagnetic signal within the target period as the second reference electromagnetic signal and the third test electromagnetic signal includes: based on the first Referring to the relationship between the target peak value of the electromagnetic signal and the main peak value of the first reference electromagnetic signal, determine the cycle number of the target cycle, wherein the target wave peak is adjacent to the main peak value of the first reference electromagnetic signal The Nth wave peak of the first reference electromagnetic signal and the electromagnetic signal of the first reference electromagnetic signal and the second test electromagnetic signal in the period corresponding to the main peak and the N peaks adjacent to the main peak, as the second reference electromagnetic signal and the electromagnetic signal The third test electromagnetic signal, wherein the number of periods is equal to N+1.

Optionally, based on the relationship between the target peak-to-peak value of the first reference electromagnetic signal and the main peak-to-peak value of the first reference electromagnetic signal, determining the period number of the target period includes: when the first reference electromagnetic signal The Nth peak-to-peak value adjacent to the main peak of the signal is greater than or equal to the set ratio of the main peak-to-peak value of the first reference electromagnetic signal, and the N+1th peak-to-peak value adjacent to the main peak of the first reference electromagnetic signal is less than When setting the ratio of the main peak value of the first reference electromagnetic signal, it is determined that the number of cycles of the target cycle is N+1, and the value range of the setting ratio is [40%, 60%].

Optionally, the method further includes: comparing the second reference electromagnetic signal and the third test electromagnetic signal based on at least one of a periodic amplitude scale and a periodic time scale to obtain a second comparison result; wherein, The cycle amplitude scale is the ratio of the absolute value of the difference between the peak value of the main peak and the Nth adjacent peak of the main peak to the N; the time scale of the cycle is the time corresponding to the peak value of the main peak and the adjacent N The ratio of the absolute value of the difference between the times corresponding to N peaks and peaks to the N; the feature selection-based verification FSV method compares the second reference electromagnetic signal with the third test electromagnetic signal, including : when the second comparison result satisfies the set condition, compare the second reference electromagnetic signal with the third test electromagnetic signal based on the feature selection verification FSV method.

Optionally, the setting conditions include at least one of the following: the ratio between the period amplitude scale of the second reference electromagnetic signal and the period amplitude scale of the third test electromagnetic signal is within a preset range; the A ratio between the cycle time scale of the second reference electromagnetic signal and the cycle time scale of the third test electromagnetic signal is within a preset range.

Optionally, the shifting the first test electromagnetic signal on the time axis to obtain the second test electromagnetic signal includes: obtaining the time corresponding to the main peak of the first test electromagnetic signal and the time corresponding to the first reference The difference between the times corresponding to the main peak and peak value of the electromagnetic signal; the first test electromagnetic signal is translated on the time axis by the distance of the difference, and the translated electromagnetic signal is used as the second test electromagnetic signal.

In another aspect, an electromagnetic signal comparison device is provided, the device includes: an acquisition unit, configured to acquire a first test electromagnetic signal and a first reference electromagnetic signal, the first test electromagnetic signal is generated by an electromagnetic model to be verified The first reference electromagnetic signal is generated by a reference electromagnetic model; the translation unit is used to translate the first test electromagnetic signal on the time axis to obtain a second test electromagnetic signal, and the second test electromagnetic signal The time corresponding to the main peak value of the signal coincides with the time corresponding to the main peak value of the first reference electromagnetic signal; the selection unit is used to select the electromagnetic frequency of the first reference electromagnetic signal and the second test electromagnetic signal within the target period Signals, as the second reference electromagnetic signal and the third test electromagnetic signal, the target period is the period corresponding to the main peak and multiple peaks adjacent to the main peak; the first comparison unit is used to verify the FSV method based on feature selection. The two reference electromagnetic signals are compared with the third test electromagnetic signal to obtain a first comparison result.

Optionally, the selecting unit includes: a period determination subunit, configured to determine the target period based on the relationship between the target peak-to-peak value of the first reference electromagnetic signal and the main peak-to-peak value of the first reference electromagnetic signal The number of cycles, wherein, the target peak is the Nth peak adjacent to the main peak of the first reference electromagnetic signal; the signal selection subunit is used to combine the first reference electromagnetic signal and the second test electromagnetic Electromagnetic signals within periods corresponding to the main peak and N peaks adjacent to the main peak are used as the second reference electromagnetic signal and the third test electromagnetic signal, wherein the number of periods is equal to N+1.

Optionally, the period determination subunit is further configured to, when the Nth peak-to-peak value adjacent to the main peak of the first reference electromagnetic signal is greater than or equal to the set ratio of the main peak-to-peak value of the first reference electromagnetic signal, And when the N+1th peak adjacent to the main peak of the first reference electromagnetic signal is less than the set ratio of the main peak of the first reference electromagnetic signal, determine that the number of cycles of the target cycle is N+1, The value range of the setting ratio is [40%, 60%].

In another aspect, a computer device is provided, the computer device includes one or more processors and one or more memories, at least one program code is stored in the one or more memories, and the at least one program code Loaded and executed by the one or more processors to realize any one of the aforementioned electromagnetic signal comparison methods.

In another aspect, a computer storage medium is provided, wherein at least one program code is stored in the computer storage medium, and the at least one program code is loaded and executed by a processor to implement any one of the aforementioned electromagnetic signal comparison methods.

The beneficial effects brought by the technical solutions provided by the embodiments of the present disclosure at least include:

In the embodiment of the present disclosure, by acquiring the first test electromagnetic signal and the first reference electromagnetic signal, the first test electromagnetic signal is shifted on the time axis so that the time corresponding to the main peak value of the second test electromagnetic signal and the first The time corresponding to the main peak of the reference electromagnetic signal coincides, so that the generation time of the two electromagnetic signals is consistent, and the comparison result of the electromagnetic signal at the same time is more accurate. By selecting the electromagnetic signal within the target period as the target signal for FSV method comparison, the electromagnetic signal of limited length is selected for comparison, and invalid data is removed, the comparison is more targeted, and the comparison result is more accurate.

Description of drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present disclosure, the drawings that need to be used in the description of the embodiments will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the present disclosure. For those skilled in the art, other drawings can also be obtained based on these drawings without creative effort.

FIG. 1 is a flowchart of an electromagnetic signal comparison method provided by an embodiment of the present disclosure;

Fig. 2 is a flow chart of another electromagnetic signal comparison method provided by an embodiment of the present disclosure;

3 is a schematic diagram of a first test electromagnetic signal and a first reference electromagnetic signal provided by an embodiment of the present disclosure;

4 is a schematic diagram of a second test electromagnetic signal and a first reference electromagnetic signal provided by an embodiment of the present disclosure;

Fig. 5 is a structural block diagram of an electromagnetic signal comparison device provided by an embodiment of the present disclosure;

Fig. 6 is a structural block diagram of a computer device provided by an embodiment of the present disclosure.

detailed description

In order to make the purpose, technical solution and advantages of the present disclosure clearer, the implementation manners of the present disclosure will be further described in detail below in conjunction with the accompanying drawings.

In order to facilitate understanding of the embodiments of the present disclosure, the application scenarios of the embodiments of the present disclosure are firstly described as examples below.

In the study of electromagnetic environment effects, it is usually necessary to compare two target electromagnetic signals. Exemplarily, the two target electromagnetic signals include a test electromagnetic signal and a reference electromagnetic signal, the test electromagnetic signal is generated by the electromagnetic model to be verified, and the reference electromagnetic signal is generated by the reference electromagnetic model. By comparing the test electromagnetic signal and the reference electromagnetic signal, the overall and detailed differences between the test electromagnetic signal and the reference electromagnetic signal are evaluated. Exemplarily, parameters of the electromagnetic model to be verified can be corrected according to the difference, so as to reduce the difference between the test electromagnetic signal and the reference electromagnetic signal.

The electromagnetic model to be verified and the reference electromagnetic model may be different electromagnetic models. Two target electromagnetic signals are obtained through the two electromagnetic models, and the results of comparing the two target electromagnetic signals are used for different purposes.

For example, the electromagnetic model to be verified is the electromagnetic experiment platform, the reference electromagnetic model is the electromagnetic simulation platform, and the comparison results of the two target electromagnetic signals are used to evaluate the accuracy of the electromagnetic experiment platform. The test electromagnetic signal carries the experimental data, and the reference electromagnetic signal carries the simulation data. The electromagnetic signal comparison is used to evaluate the difference between the experimental data and the simulation data. The experimenter can correct the parameters of the electromagnetic experiment platform according to the difference.

For another example, the electromagnetic model to be verified is an electromagnetic simulation platform, the reference electromagnetic model is an electromagnetic experiment platform, and the comparison results of the two target electromagnetic signals are used to evaluate the accuracy of the electromagnetic simulation platform. The test electromagnetic signal carries the simulation data, the reference electromagnetic signal carries the experimental data, and the electromagnetic signal comparison is used to evaluate the difference between the simulation data and the experimental data, and the experimenter can correct the parameters of the electromagnetic simulation platform according to the difference.

In the embodiments of the present disclosure, the electromagnetic experiment platform may be physical, and the electromagnetic simulation platform may be mathematical, that is, computer simulation.

The acquisition time of the test electromagnetic signal and the reference electromagnetic signal is different, resulting in a different start time of the two electromagnetic signals, and there will be a deviation in the time of the two electromagnetic signals for data with the same physical meaning, for example, the peak value of the main peak is between the two electromagnetic signals The time is different. When directly comparing the two electromagnetic signals, there is a large deviation in the data at the same time, and the data at the same time have different physical meanings, and the comparability is low, resulting in inaccurate comparison results.

In addition, due to the attenuation of the electromagnetic signal, as time increases, the amplitudes of the acquired test electromagnetic signal and reference electromagnetic signal become smaller and smaller, which shows that the test electromagnetic signal and the reference electromagnetic signal have a long tail. However, in these long-tail signals, due to the fluctuation of attenuation, the tail signals of the two electromagnetic signals are very different. Therefore, it is meaningless to compare all the data carried by the two electromagnetic signals, and the comparison result is inaccurate.

To this end, an embodiment of the present disclosure provides a method for comparing electromagnetic signals. By preprocessing the two target electromagnetic signals, the time of the two target electromagnetic signals is aligned, and the long tails in the two target electromagnetic signals are removed. Based on the preprocessed two target electromagnetic signals, the FSV method is used for comparison to improve the accuracy of the comparison result.

Fig. 1 is a flowchart of an electromagnetic signal comparison method provided by an embodiment of the present disclosure. Referring to Fig. 1, the method is performed by a computer device, and the method includes:

Step 101, acquiring a first test electromagnetic signal and a first reference electromagnetic signal.

Wherein, the first test electromagnetic signal is generated by the electromagnetic model to be verified, and the first reference electromagnetic signal is generated by the reference electromagnetic model.

Step 102: Translating the first test electromagnetic signal on the time axis to obtain a second test electromagnetic signal.

Wherein, the time corresponding to the main peak value of the second test electromagnetic signal coincides with the time corresponding to the main peak value of the first reference electromagnetic signal.

Step 103, selecting the electromagnetic signals of the first reference electromagnetic signal and the second test electromagnetic signal within the target period as the second reference electromagnetic signal and the third test electromagnetic signal.

Wherein, the target period is a period corresponding to the main peak and multiple peaks adjacent to the main peak.

Step 104, comparing the second reference electromagnetic signal and the third test electromagnetic signal based on the FSV method to obtain a first comparison result.

In the embodiment of the present disclosure, by acquiring the first test electromagnetic signal and the first reference electromagnetic signal, the first test electromagnetic signal is shifted on the time axis, so that the time corresponding to the main peak value of the second test electromagnetic signal and the second The times corresponding to the main peaks of a reference electromagnetic signal coincide, so that the generation times of the two electromagnetic signals are consistent, and the comparison result of the electromagnetic signals at the same time is more accurate. Moreover, by selecting the electromagnetic signal within the target period as the target signal for FSV method comparison, the long tail with large differences in the electromagnetic signal is removed, and the electromagnetic signal of limited length is selected for comparison, the comparison is more targeted, and the comparison results more acurrate.

Fig. 2 is a flowchart of another electromagnetic signal comparison method provided by an embodiment of the present disclosure. Referring to Fig. 2, the method is performed by a computer device, and the method includes:

Step 201, acquiring a first test electromagnetic signal and a first reference electromagnetic signal.

Step 202, acquiring a difference between the time corresponding to the main peak-peak value of the first test electromagnetic signal and the time corresponding to the main peak-peak value of the first reference electromagnetic signal.

Exemplarily, the difference between the time corresponding to the main peak value of the first test electromagnetic signal and the time corresponding to the main peak value of the first reference electromagnetic signal can be expressed by formula (1):

d=Data_t1_x1-Data_r1_x1 (1)

In formula (1), d represents the difference between the time corresponding to the main peak-peak value of the two electromagnetic signals, Data_t1_x1 represents the time corresponding to the main peak-peak value of the first test electromagnetic signal, and Data_r1_x1 represents the corresponding time of the main peak-peak value of the first reference electromagnetic signal time.

Step 203: Translate the first test electromagnetic signal on the time axis by the distance of the difference, and use the translated electromagnetic signal as the second test electromagnetic signal.

Exemplarily, when the difference d>0, the first test electromagnetic signal is shifted to the left on the time axis by the distance of the difference; when the difference d<0, the first test electromagnetic signal is shifted to the right on the time axis The distance of the difference.

Through steps 202-203, the first test electromagnetic signal can be shifted on the time axis to obtain the second test electromagnetic signal.

Fig. 3 is a schematic diagram of a first test electromagnetic signal and a first reference electromagnetic signal provided by an embodiment of the present disclosure. Referring to FIG. 3 , there is a deviation between the time corresponding to the main peak-peak value of the first test electromagnetic signal 302 and the time corresponding to the main peak-peak value of the first reference electromagnetic signal 301 . Fig. 4 is a schematic diagram of a second test electromagnetic signal and a first reference electromagnetic signal provided by an embodiment of the present disclosure. After performing steps 202 to 203 on the first test electromagnetic signal 302 and the first reference electromagnetic signal 301, the second test electromagnetic signal 401 is obtained, and the time corresponding to the main peak value of the second test electromagnetic signal 401 is the same as the main peak value of the first reference electromagnetic signal. The corresponding time coincides.

Step 204, based on the relationship between the target peak-to-peak value of the first reference electromagnetic signal and the main peak-to-peak value of the first reference electromagnetic signal, determine the period number of the target period.

Wherein, the target peak is the Nth peak adjacent to the main peak of the first reference electromagnetic signal.

Optionally, this step 204 includes: when the Nth peak-to-peak value adjacent to the main peak of the first reference electromagnetic signal is greater than or equal to the set ratio of the main peak-peak value of the first reference electromagnetic signal, and the phase of the main peak of the first reference electromagnetic signal When the adjacent N+1th peak-to-peak value is smaller than the set ratio of the main peak-to-peak value of the first reference electromagnetic signal, determine that the number of cycles of the target cycle is N+1.

In the embodiment of the present disclosure, the value range of the set ratio is [40%, 60%], for example, the value of the set ratio is 50%.

Taking Fig. 4 as an example below, the peak value of the main peak 3011 of the first reference electromagnetic signal 301 is 0.99, the peak value of the first peak 3012 adjacent to the main peak 3011 is 0.49, and the peak value of the second peak 3013 adjacent to the main peak 3011 is 0.3 , the setting ratio is 50%, satisfying that the peak value of the first peak 3012 is greater than 50% of the peak value of the main peak 3011, and the peak value of the second peak 3013 is less than 50% of the peak value of the main peak 3011, so based on the first reference electromagnetic The target period number determined by the signal is 2, and N=1.

Step 205, using the electromagnetic signals of the first reference electromagnetic signal and the second test electromagnetic signal within the target period as the second reference electromagnetic signal and the third test electromagnetic signal.

The electromagnetic signal within the target period is selected as the target signal for comparison by the FSV method. The signal data with more attenuation is removed, and only the signal data with a larger amplitude is retained. The comparison is more valuable and the comparison result is more accurate.

Through steps 204-205, electromagnetic signals within the target period of the first reference electromagnetic signal and the second test electromagnetic signal can be selected as the second reference electromagnetic signal and the third test electromagnetic signal.

Step 206: Based on at least one of the periodic amplitude scale and the periodic time scale, compare the second reference electromagnetic signal with the third test electromagnetic signal to obtain a second comparison result.

Among them, the cycle amplitude scale is the ratio of the absolute value of the difference between the peak value of the main peak and the Nth peak value adjacent to the main peak and N; the cycle time scale is the time corresponding to the peak value of the main peak and the Nth peak value adjacent to the main peak The ratio of the absolute value of the difference between the corresponding times to N.

The second comparison result includes at least one of the following: the ratio between the period amplitude scale of the second reference electromagnetic signal and the period amplitude scale of the third test electromagnetic signal, the period time scale of the second reference electromagnetic signal and the period time scale of the third test electromagnetic signal ratio between.

When the ratio between the period amplitude scale of the second reference electromagnetic signal and the period amplitude scale of the third test electromagnetic signal is within the preset range, it means that the period amplitudes of the two electromagnetic signals are close; when the period amplitude scale of the second reference electromagnetic signal The ratio between the scale and the period amplitude scale of the third test electromagnetic signal is outside the preset range, indicating that the period amplitudes of the two electromagnetic signals differ greatly.

When the ratio between the period time scale of the second reference electromagnetic signal and the period time scale of the third test electromagnetic signal is within the preset range, it means that the period times of the two electromagnetic signals are close; when the period time scale of the second reference electromagnetic signal The ratio between the period time scale and the period time scale of the third test electromagnetic signal is outside the preset range, indicating that the period time difference between the two electromagnetic signals is large.

Exemplarily, the preset range is [0.95, 1.05].

The calculation method of the second reference electromagnetic signal and the third test electromagnetic signal is the same as the periodic amplitude scale and the periodic time scale. Taking the second reference electromagnetic signal as an example, the periodic amplitude scale can be expressed by formula (2):

pa1＝|Data_r2_y1-Data_r2_yn|/N (2)

In formula (2), pa1 represents the periodic amplitude scale of the second reference electromagnetic signal, Data_r2_y1 represents the main peak value of the second reference electromagnetic signal, Data_r2_yn represents the Nth peak value adjacent to the main peak of the second reference electromagnetic signal, and N represents The serial number of the peak adjacent to the main peak, the value is a positive integer, and || means to take the absolute value.

The periodic time scale can be expressed by formula (3):

pt1＝|Data_r2_x1-Data_r2_xn|/N (3)

In formula (3), pt1 represents the cycle time scale of the second reference electromagnetic signal, Data_r2_x1 represents the time corresponding to the main peak peak value of the second reference electromagnetic signal, and Data_r2_xn represents the Nth adjacent main peak of the second reference electromagnetic signal The time corresponding to the peak value, N represents the peak number adjacent to the main peak, the value is a positive integer, || represents the absolute value.

Taking Figure 4 as an example, the process of comparing the second reference electromagnetic signal with the third test electromagnetic signal based on the periodic amplitude scale and the periodic time scale to obtain the second comparison result is described below:

The peak sequence number N=1 determined according to FIG. 4 . The main peak value Data_r2_y1 of the second reference electromagnetic signal is 0.99, the first peak value Data_r2_yn adjacent to the main peak of the second reference electromagnetic signal is 0.49, the main peak value Data_t3_y1 of the third test electromagnetic signal is 0.98, and the main peak value of the third test electromagnetic signal The peak value of the first adjacent peak Data_t3_yn is 0.28, and the period amplitude scales of the second reference electromagnetic signal and the third test electromagnetic signal calculated according to formula (2) are: pa1=0.5, pa2=0.7.

Calculate the period amplitude scale ratio pa1/pa2=0.714 of the two electromagnetic signals.

The periodic amplitude scale ratio of 0.714 is outside the preset range [0.95, 1.05], indicating that the periodic amplitudes of the two electromagnetic signals differ greatly.

The time Data_r2_x1 corresponding to the main peak of the second reference electromagnetic signal is 19, the time Data_r2_xn corresponding to the first peak adjacent to the main peak of the second reference electromagnetic signal is 27.37, and the time Data_t3_x1 corresponding to the main peak of the third test electromagnetic signal is 19. The time Data_t3_xn corresponding to the first peak value adjacent to the main peak of the third test electromagnetic signal is 27.4, and the cycle amplitude scales of the second reference electromagnetic signal and the third test electromagnetic signal calculated according to the formula (3) are respectively: pt1=8.37, pt2=8.4.

Calculate the period time scale ratio pt1/pt2=0.996 of the two electromagnetic signals.

The cycle time scale ratio of 0.996 is within the preset range [0.95, 1.05], indicating that the cycle times of the two electromagnetic signals are close.

Step 207, when the second comparison result satisfies the set condition, compare the second reference electromagnetic signal and the third test electromagnetic signal based on the FSV method to obtain a first comparison result.

In some examples, the second comparison result is obtained based on the comparison between the periodic amplitude scale and the periodic time scale, and the second comparison result meets the set condition, which refers to the periodic amplitude scale of the second reference electromagnetic signal and the periodic amplitude of the third test electromagnetic signal The ratio between the scales is within a preset range, or the ratio between the cycle time scale of the second reference electromagnetic signal and the cycle time scale of the third test electromagnetic signal is within a preset range.

In some other examples, the second comparison result is obtained based on any one of the periodic amplitude scale and the periodic time scale. The ratio between the periodic amplitude scales of the signal is within the preset range, or the second comparison result meets the set condition, which means that the ratio between the periodic time scale of the second reference electromagnetic signal and the periodic time scale of the third test electromagnetic signal is within within the preset range.

This step 207 includes:

In the first step, the data of the second reference electromagnetic signal and the third test electromagnetic signal are decomposed into direct current, low frequency and high frequency components.

In the second step, Amplitude Difference Measure (ADM), Feature Difference Measure (FDM) and Global Difference Measure (GDM) indicators are extracted by combining DC, low frequency and high frequency components.

Wherein, ADM is extracted according to the DC component and low frequency component of the second reference electromagnetic signal and the DC component and low frequency component of the third test electromagnetic signal, and the ADM represents the difference in the overall value and trend of the two target electromagnetic signals. According to the low-frequency component and high-frequency component of the second reference electromagnetic signal and the low-frequency component and high-frequency component of the third test electromagnetic signal, FDM is extracted, and the FDM characterizes the detail feature difference between the two target electromagnetic signals. GDM is formed by combining ADM and FDM.

In the third step, the quantitative results of ADM, FDM and GDM are transformed into qualitative explanations described in natural language.

The qualitative explanation includes six categories: excellent, very good, good, fair, poor, very poor.

The fourth step is to count the proportion of each type of qualitative explanation to obtain the reliability histogram.

The credibility histogram is the first comparison result, and the distribution of expert evaluation results can be simulated according to the first comparison result.

When the period amplitude of the two electromagnetic signals is close or the period time of the two electromagnetic signals is close, it indicates that the two electromagnetic signals are similar in period characteristics, and it is valuable to compare the two electromagnetic signals based on the FSV method. When there is a large difference in the period amplitude of the two electromagnetic signals and a large difference in the period time of the two electromagnetic signals, it indicates that the two electromagnetic signals have a large difference in period characteristics. In the first comparison result based on the FSV method, the "poor, very poor" The proportion is high, and it is worthless to compare the two electromagnetic signals based on the FSV method.

In the embodiment of the present disclosure, by acquiring the first test electromagnetic signal and the first reference electromagnetic signal, the first test electromagnetic signal is shifted on the time axis, so that the time corresponding to the main peak value of the second test electromagnetic signal and the second The times corresponding to the main peaks of a reference electromagnetic signal coincide, so that the generation times of the two electromagnetic signals are consistent, and the comparison result of the electromagnetic signals at the same time is more accurate. Moreover, by selecting the electromagnetic signal within the target period as the target signal for FSV method comparison, the long tail with large differences in the electromagnetic signal is removed, and the electromagnetic signal of limited length is selected for comparison, the comparison is more targeted, and the comparison results more acurrate.

In addition, before comparing the second reference electromagnetic signal and the third test electromagnetic signal based on the FSV method, the second reference electromagnetic signal and the third test electromagnetic signal are compared based on the characteristic quantity period amplitude scale and period time scale, when the second When the comparison result satisfies the set condition, it is determined to use the FSV method to compare the second reference electromagnetic signal and the third test electromagnetic signal, which makes the comparison more valuable and improves the comparison efficiency.

Fig. 5 is a structural block diagram of an electromagnetic signal comparison device provided by an embodiment of the present disclosure. As shown in FIG. 5 , the device 50 may be implemented by hardware or a combination of hardware and software, so as to execute all or part of the steps of the method shown in the corresponding embodiment in FIG. 1 or FIG. 2 . The device 50 includes: an acquisition unit 501 , a translation unit 502 , a selection unit 503 and a first comparison unit 504 .

The acquiring unit 501 is configured to acquire a first test electromagnetic signal and a first reference electromagnetic signal, wherein the first test electromagnetic signal is generated by the electromagnetic model to be verified, and the first reference electromagnetic signal is generated by the reference electromagnetic model. The translation unit 502 is used to translate the first test electromagnetic signal on the time axis to obtain a second test electromagnetic signal, wherein the time corresponding to the main peak value of the second test electromagnetic signal coincides with the time corresponding to the main peak value of the first reference electromagnetic signal . The selection unit 503 is used to select the electromagnetic signals of the first reference electromagnetic signal and the second test electromagnetic signal within the target period as the second reference electromagnetic signal and the third test electromagnetic signal, wherein the target period is the main peak and a plurality of adjacent main peaks The period corresponding to the peak. The first comparison unit 504 is configured to compare the second reference electromagnetic signal and the third test electromagnetic signal based on the FSV method to obtain a first comparison result.

Optionally, the translation unit 502 is configured to acquire the difference between the time corresponding to the main peak of the first test electromagnetic signal and the time corresponding to the main peak of the first reference electromagnetic signal; to translate the first test electromagnetic signal on the time axis The distance of the difference, using the translated electromagnetic signal as the second test electromagnetic signal.

Optionally, the selection unit 503 includes a period determination subunit 5031 and a signal selection subunit 5032 . The cycle determination subunit 5031 is used to determine the cycle number of the target cycle based on the relationship between the target peak value of the first reference electromagnetic signal and the main peak value of the first reference electromagnetic signal, wherein the target wave peak is the main peak value of the first reference electromagnetic signal The adjacent Nth peak. The signal selection subunit 5032 is used to use the electromagnetic signals of the first reference electromagnetic signal and the second test electromagnetic signal in the period corresponding to the main peak and N peaks adjacent to the main peak as the second reference electromagnetic signal and the third test electromagnetic signal, Wherein, the number of cycles is equal to N+1.

Optionally, the period determination subunit 5031 is also used to, when the Nth peak-to-peak value adjacent to the main peak of the first reference electromagnetic signal is greater than or equal to the set ratio of the main peak-to-peak value of the first reference electromagnetic signal, and the first reference electromagnetic signal When the N+1th peak-to-peak value adjacent to the main peak of the signal is smaller than the set ratio of the main peak-to-peak value of the first reference electromagnetic signal, determine that the number of periods of the target period is N+1.

In the embodiment of the present disclosure, the value range of the set ratio is [40%, 60%], for example, the value of the set ratio is 50%.

Optionally, the device 50 further includes a second comparison unit 505 . The second comparison unit 505 is configured to compare the second reference electromagnetic signal with the third test electromagnetic signal based on at least one of the periodic amplitude scale and the periodic time scale, to obtain a second comparison result.

Among them, the periodic amplitude scale is the ratio of the absolute value of the difference between the peak value of the main peak and the Nth adjacent peak to the peak number N; the periodic time scale is the time corresponding to the peak of the main peak and the Nth adjacent to the main peak The ratio of the absolute value of the difference between the time corresponding to the peak value to the peak number N.

Optionally, the first comparison unit 504 is used to compare the second reference electromagnetic signal and the third test electromagnetic signal based on the FSV method to obtain the first comparison result when the second comparison result satisfies the set condition.

Among them, the setting conditions include at least one of the following:

The ratio between the period amplitude scale of the second reference electromagnetic signal and the period amplitude scale of the third test electromagnetic signal is within a preset range;

The ratio between the cycle time scale of the second reference electromagnetic signal and the cycle time scale of the third test electromagnetic signal is within a preset range.

It should be noted that when the electromagnetic signal comparison device provided in the above-mentioned embodiment performs electromagnetic signal comparison, the division of the above-mentioned functional modules is used as an example for illustration. In practical applications, the above-mentioned function allocation can be completed by different functional modules according to needs. , that is, the internal structure of the device is divided into different functional modules to complete all or part of the functions described above. In addition, the electromagnetic signal comparison device and the electromagnetic signal comparison method embodiment provided by the above embodiment belong to the same concept, and the specific implementation process thereof is detailed in the method embodiment, and will not be repeated here.

The division of modules in the embodiments of the present disclosure is schematic, and is only a logical function division. In actual implementation, there may be other division methods. In addition, each functional module in each embodiment of the present disclosure can be integrated into one In the processor, it may exist separately physically, or two or more modules may be integrated into one module. The above-mentioned integrated modules can be implemented in the form of hardware or in the form of software function modules.

If the integrated module is realized in the form of a software function module and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present disclosure is essentially or part of the contribution to the prior art, or all or part of the technical solution can be embodied in the form of a software product, and the computer software product is stored in a storage medium , including several instructions for enabling a terminal device (which may be a personal computer, a mobile phone, or a communication device, etc.) or a processor (processor) to execute all or part of the steps of the method in various embodiments of the present disclosure. The above-mentioned storage medium includes: U disk, mobile hard disk, read-only memory (read-only memory, ROM), random access memory (random access memory, RAM), magnetic disk or optical disk, and various media capable of storing program codes.

An embodiment of the present disclosure provides a computer device. The computer device includes a memory and a processor, at least one program code is stored in the memory, and the at least one program code is loaded and executed by the processor to implement the electromagnetic signal comparison method shown in the corresponding embodiment shown in FIG. 1 or FIG. 2 .

Fig. 6 is a structural block diagram of a computer device provided by an embodiment of the present disclosure. The computer device 60 includes: a processor 601 and a memory 602 .

The processor 601 may include one or more processing cores, such as a 4-core processor, an 8-core processor, and the like. The processor 601 can adopt at least one hardware form in DSP (Digital Signal Processing, digital signal processing), FPGA (Field-Programmable Gate Array, field programmable gate array), PLA (Programmable Logic Array, programmable logic array) accomplish. The processor 601 may also include a main processor and a coprocessor, the main processor is a processor for processing data in the wake-up state, and is also called a CPU (Central Processing Unit, central processing unit); the coprocessor is used to Low-power processor for processing data in standby state.

Memory 602 may include one or more computer-readable storage media, which may be non-transitory. The memory 602 may also include high-speed random access memory and non-volatile memory, such as one or more magnetic disk storage devices and flash memory storage devices. In some embodiments, the non-transitory computer-readable storage medium in the memory 602 is used to store at least one instruction, and the at least one instruction is used to be executed by the processor 601 to realize the electromagnetic signal provided by the method embodiment in this application Comparison method.

An embodiment of the present disclosure provides a computer-readable storage medium, at least one program code is stored in the computer-readable storage medium, and the at least one program code is loaded and executed by a processor to complete the above-mentioned embodiments corresponding to FIG. 1 or FIG. 2 . The electromagnetic signal comparison method shown. For example, the computer-readable storage medium may be a USB flash drive, a removable hard disk, a ROM, a RAM, a magnetic disk or an optical disk, and the like.

An embodiment of the present disclosure also provides a computer program product, the computer program product includes computer instructions, and when the computer instructions are run on a computer device, the computer device executes the electromagnetic signal provided in various optional implementation manners of the above aspects. Comparison method.

The above descriptions are only optional embodiments of the present disclosure, and are not intended to limit the present disclosure. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present disclosure shall be included in the protection of the present disclosure. within range.

Claims (10)

1. A method of electromagnetic signal comparison, the method comprising:

acquiring a first test electromagnetic signal and a first reference electromagnetic signal, wherein the first test electromagnetic signal is generated by an electromagnetic model to be verified, and the first reference electromagnetic signal is generated by a reference electromagnetic model;

translating the first test electromagnetic signal on a time axis to obtain a second test electromagnetic signal, wherein the time corresponding to the main peak value of the second test electromagnetic signal is coincided with the time corresponding to the main peak value of the first reference electromagnetic signal;

selecting electromagnetic signals of the first reference electromagnetic signal and the second test electromagnetic signal in a target period as a second reference electromagnetic signal and a third test electromagnetic signal, wherein the target period is a period corresponding to a main peak and a plurality of peaks adjacent to the main peak;

and comparing the second reference electromagnetic signal with the third test electromagnetic signal based on a Feature Selection Verification (FSV) method to obtain a first comparison result.

2. The method of claim 1, wherein selecting the electromagnetic signals of the first reference electromagnetic signal and the second test electromagnetic signal within the target period as the second reference electromagnetic signal and the third test electromagnetic signal comprises:

determining the periodicity of the target period based on a relationship between a target peak value of the first reference electromagnetic signal and a main peak value of the first reference electromagnetic signal, wherein the target peak value is an Nth peak value adjacent to the main peak of the first reference electromagnetic signal;

and taking the electromagnetic signals of the first reference electromagnetic signal and the second test electromagnetic signal in a period corresponding to a main peak and N peaks adjacent to the main peak as the second reference electromagnetic signal and the third test electromagnetic signal, wherein the period number is equal to N +1.

3. The method of claim 2, wherein determining the number of cycles of the target period based on a relationship between a target peak-to-peak value of the first reference electromagnetic signal and a main peak-to-peak value of the first reference electromagnetic signal comprises:

when the nth peak value adjacent to the main peak of the first reference electromagnetic signal is greater than or equal to the set proportion of the main peak value of the first reference electromagnetic signal, and the (N + 1) th peak value adjacent to the main peak of the first reference electromagnetic signal is less than the set proportion of the main peak value of the first reference electromagnetic signal, determining that the periodicity of the target period is N +1, and the value range of the set proportion is [40%,60% ].

4. The method of claim 2, further comprising:

comparing the second reference electromagnetic signal and the third test electromagnetic signal based on at least one of a period amplitude scale and a period time scale to obtain a second comparison result;

wherein the cycle amplitude scale is the ratio of the absolute value of the difference between the main peak value and the Nth peak value adjacent to the main peak to the N; the cycle time scale is the ratio of the absolute value of the difference between the time corresponding to the peak value of the main peak and the time corresponding to the Nth peak value adjacent to the main peak to N;

the feature selection based validation FSV method comparing the second reference electromagnetic signal and the third test electromagnetic signal, comprising:

and when the second comparison result meets a set condition, comparing the second reference electromagnetic signal with the third test electromagnetic signal based on a characteristic selection verification (FSV) method.

5. The method of claim 4, wherein the set condition comprises at least one of:

the ratio of the second reference electromagnetic signal period amplitude scale to the third test electromagnetic signal period amplitude scale is within a preset range;

the ratio between the second reference electromagnetic signal period time scale and the third test electromagnetic signal period time scale is within a preset range.

6. The method of claim 1, wherein said translating the first test electromagnetic signal on a time axis to obtain a second test electromagnetic signal comprises:

obtaining a difference value between time corresponding to a main peak value of the first test electromagnetic signal and time corresponding to a main peak value of the first reference electromagnetic signal;

and translating the first test electromagnetic signal by the distance of the difference value on a time axis, and taking the translated electromagnetic signal as a second test electromagnetic signal.

7. An electromagnetic signal comparison apparatus, said apparatus comprising:

an obtaining unit, configured to obtain a first test electromagnetic signal and a first reference electromagnetic signal, where the first test electromagnetic signal is generated by an electromagnetic model to be verified, and the first reference electromagnetic signal is generated by a reference electromagnetic model;

the translation unit is used for translating the first test electromagnetic signal on a time axis to obtain a second test electromagnetic signal, and the time corresponding to the main peak value of the second test electromagnetic signal is coincided with the time corresponding to the main peak value of the first reference electromagnetic signal;

a selecting unit, configured to select electromagnetic signals of the first reference electromagnetic signal and the second test electromagnetic signal in a target period as a second reference electromagnetic signal and a third test electromagnetic signal, where the target period is a period corresponding to a main peak and a plurality of peaks adjacent to the main peak;

and the first comparison unit is used for comparing the second reference electromagnetic signal with the third test electromagnetic signal based on a feature selection verification FSV method to obtain a first comparison result.

8. The apparatus of claim 7, wherein the selecting unit comprises:

a cycle determining subunit, configured to determine a cycle number of the target cycle based on a relationship between a target peak value of the first reference electromagnetic signal and a main peak value of the first reference electromagnetic signal, where the target peak value is an nth peak adjacent to the main peak of the first reference electromagnetic signal;

and the signal selection subunit is configured to use, as the second reference electromagnetic signal and the third test electromagnetic signal, electromagnetic signals of the first reference electromagnetic signal and the second test electromagnetic signal in a period corresponding to a main peak and N peaks adjacent to the main peak, where the period number is equal to N +1.

9. A computer device comprising one or more processors and one or more memories having at least one program code stored therein, the at least one program code being loaded and executed by the one or more processors to implement an electromagnetic signal comparison method as claimed in any one of claims 1 to 6.

10. A computer-readable storage medium having stored therein at least one program code, which is loaded and executed by a processor, to implement the electromagnetic signal comparison method according to any one of claims 1 to 6.

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