A communication signal interference effect evaluation method based on parameter calculation

Abstract

The present application belongs to the field of communication technology, and relates to a communication signal interference effect evaluation method based on parameter calculation, in particular to a technology that a third party uses intercepted interference signal parameters and communication signal parameters to calculate channel interference effect. The present application uses an established electromagnetic attenuation model to calculate the coincidence degree of different interference parameters, complete the weight mapping of interference effect and interference parameters, so as to achieve the purpose of online interference effect evaluation, and the implementation steps are as follows: establishment and adjustment of electromagnetic attenuation model; coincidence degree calculation of different interference parameters; mapping of interference parameters and interference effect and weight calculation; statistical interference effect evaluation calculation under frequency hopping network station. The present application establishes and adjusts the model through collected data, calculates the coincidence degree of different interference parameters, and maps the interference effect, so that the algorithm is simple, the calculation amount is small, and the engineering implementation difficulty is small.

Description

Technical Field

[0001] This invention belongs to the field of communication technology and relates to a method for evaluating the interference effect of communication signals based on parameter calculation. Specifically, it relates to a third-party technique for calculating the channel interference effect using intercepted interference signal parameters and communication signal parameters. Background Technology

[0002] Interference effect assessment, as an important technology in the field of communication spectrum monitoring, has been applied in various scenarios. As a monitoring party, when monitoring the channel quality of a communication channel, it is necessary to assess the interference effect present on the current channel and determine the magnitude of the impact of the current interference signal on the communication signal.

[0003] Currently, there is limited research on the evaluation of interference effects on communication signals, especially when third-party monitoring fails to effectively obtain communication parameters. It is necessary to detect and intercept both communication and interference signals, and then use the intercepted parameters to evaluate the interference effects on the channel. Summary of the Invention

[0004] The purpose of this invention is to overcome the gaps in the existing technology and propose a method for evaluating the interference effect of communication signals based on parameter calculation. By using an electromagnetic attenuation model established by interference cases, the interference effect of different parameter items is mapped to achieve the goal of accurately evaluating the interference effect.

[0005] To achieve the above objectives, the technical solution adopted by the present invention includes the following steps:

[0006] A method for evaluating the interference effect of communication signals based on parameter calculation includes the following steps:

[0007] (1) The radiation source target is moved multiple times and the frequency is changed. The attenuation value corresponding to different positions and frequencies of the radiation source target is calculated. The attenuation value is fitted and the standard electromagnetic wave spatial attenuation formula is corrected by the fitting coefficient to obtain the measured electromagnetic wave spatial attenuation formula. Among them, the radiation source target includes communication target and interference source target.

[0008] (2) Obtain communication target parameter information and interference source target parameter information, and calculate the frequency band overlap, interference time overlap, beam overlap and modulation pattern overlap between the communication target and the interference source target based on the obtained parameter information; and calculate the interference-to-signal ratio using the measured electromagnetic wave spatial attenuation formula, communication target parameter information, interference source target parameter information, distance of communication target from monitoring point and distance of interference source target from monitoring point, and use the calculated interference-to-signal ratio as the power overlap value;

[0009] (3) Constructing step (2) to calculate the Paramix interference parameter overlap. n Interference effect Rn Mapping relationship R n =exp(-Paramix n 2 / 2), where n takes values ​​from 1 to 5, corresponding to frequency band overlap, interference time overlap, beam overlap, modulation pattern overlap, and power overlap, respectively; and weights μ for different interference parameters are set according to the interference cases. n By combining the overlap relationship of the comprehensive interference parameters with the corresponding weights, the interference effect evaluation result is obtained by summing them up.

[0010] (4) Repeat steps (1) to (3) to obtain the interference effect evaluation results of different frequency points, and calculate the interference effect evaluation level of the frequency hopping network station by weighting.

[0011] Furthermore, the formula for the spatial attenuation of electromagnetic waves measured in step (1) is:

[0012] ΔL = 30.33 + 26.16 * log 10 (freq) + 37.6 * log 10 (dist)

[0013] In the formula, freq is the target frequency of the radiation source, dist is the distance between the target radiation source and the monitoring point, and ΔL is the attenuation value.

[0014] Furthermore, the specific process of step (2) is as follows:

[0015] (2a) Obtain communication target parameter information and interference source target parameter information. The communication target parameter information includes the frequency, bandwidth, level, beam pointing, beamwidth, start time, duration and modulation pattern of the communication signal. The interference source target parameter information includes the frequency, bandwidth, level, beam pointing, beamwidth, start time, end time and modulation pattern of the interference signal.

[0016] (2b) Calculate the frequency band overlap based on the frequency and bandwidth of the acquired communication signal and the frequency and bandwidth of the interference signal; calculate the interference time overlap based on the duration and start time of the communication signal and the duration and start time of the interference signal; calculate the beam overlap based on the beam pointing and beamwidth of the communication signal and the beam pointing and beamwidth of the interference signal; calculate the modulation pattern overlap based on the modulation pattern of the communication signal and the modulation pattern of the interference signal.

[0017] (2c) Based on the measured electromagnetic wave spatial attenuation formula obtained in step (1), the distance dist1 between the communication target and the monitoring point, and the distance dist2 between the interference source target and the monitoring point, calculate the propagation attenuation value ΔL of the communication target and the interference source target. 通信 and ΔL 干扰; and utilize the acquired communication signal level T db Communication attenuation value ΔL with target 通信 and interference signal level J db and interference signal attenuation value ΔL 干扰 The calculated interference-to-signal ratio JSR = J db -T db +37.6*log 10 (dist2 / dist1), and the calculated interference-to-signal ratio is used as the power overlap value.

[0018] Compared with the prior art, the present invention has the following advantages:

[0019] 1. This invention, through statistical analysis of interference case data, establishes and adjusts a spatial electromagnetic signal attenuation model, and solves the problem that existing methods cannot effectively evaluate interference effects by assigning weights to different interference parameters, thereby enabling feedback to the interfering party to adjust interference parameters.

[0020] 2. The algorithm of this invention is simple, has a small computational load, and is easy to implement in engineering. Attached Figure Description

[0021] Figure 1 This is a flowchart illustrating the implementation of the present invention. Detailed Implementation

[0022] The following is in conjunction with the appendix Figure 1 The invention will be further described in detail with specific examples.

[0023] See attached document Figure 1 A method for evaluating the interference effect of communication signals based on parameter calculation includes the following steps:

[0024] Step 1) Move the radiation source target to a different position and change its frequency multiple times, calculate the attenuation value corresponding to different positions and frequencies of the radiation source target, fit the attenuation value, and use the fitting coefficient to correct the standard electromagnetic wave spatial attenuation formula to obtain the measured electromagnetic wave spatial attenuation formula; where the radiation source target includes communication target and interference source target.

[0025] Step 2) Obtain communication target parameter information and interference source target parameter information. Based on the obtained parameter information, calculate the frequency band overlap, interference time overlap, beam overlap, and modulation pattern overlap between the communication target and the interference source target. Then, using the measured electromagnetic wave spatial attenuation formula, the communication target parameter information, the interference source target parameter information, the distance between the communication target and the monitoring point, and the distance between the interference source target and the monitoring point, calculate the interference-to-signal ratio (ISR). Use the calculated ISR as the power overlap value. The specific process is as follows:

[0026] Step 2a) Obtain communication target parameter information and interference source target parameter information. The communication target parameter information includes the frequency, bandwidth, level, beam pointing, beamwidth, start time, duration and modulation pattern of the communication signal. The interference source target parameter information includes the frequency, bandwidth, level, beam pointing, beamwidth, start time, end time and modulation pattern of the interference signal.

[0027] Step 2b) Calculate the frequency band overlap based on the frequency and bandwidth of the acquired communication signal and the frequency and bandwidth of the interference signal; calculate the interference time overlap based on the duration and start time of the communication signal and the duration and start time of the interference signal; calculate the beam overlap based on the beam pointing and beamwidth of the communication signal and the beam pointing and beamwidth of the interference signal; calculate the modulation pattern overlap based on the modulation pattern of the communication signal and the modulation pattern of the interference signal.

[0028] Step 2c) Based on the measured electromagnetic wave spatial attenuation formula obtained in Step 1), the distance dist1 between the communication target and the monitoring point, and the distance dist2 between the interference source target and the monitoring point, calculate the propagation attenuation value ΔL of the communication target and the interference source target. 通信 and ΔL 干扰 ; and utilize the acquired communication signal level T db Communication attenuation value ΔL with target 通信 and interference signal level J db and interference signal attenuation value ΔL 干扰 The calculated interference-to-signal ratio JSR = J db -T db +37.6*log 10 (dist2 / dist1), and the calculated interference-to-signal ratio is used as the power overlap value.

[0029] Step 3) Construct the Paramix interference parameter overlap degree calculated in step (2). n Interference effect R n Mapping relationship R n =exp(-Paramix n 2 / 2) Where n takes values ​​from 1 to 5, corresponding to frequency band overlap, interference time overlap, beam overlap, modulation pattern overlap, and power overlap, respectively; and the weights μ of different interference parameters are set according to the interference cases. n By combining the overlap relationship of the comprehensive interference parameters with the corresponding weights, the interference effect evaluation result is obtained by summing them up.

[0030] Step 4) Repeat steps (1) to (3) to obtain the interference effect evaluation results of different frequency points, and calculate the interference effect evaluation level of the frequency hopping network station by weighting.

[0031] Those skilled in the art will recognize that the embodiments described herein are intended to help the reader understand the principles of the invention and should be understood as not limiting the scope of protection of the invention to such specific statements and embodiments. Those skilled in the art can make various other specific modifications and combinations based on the technical teachings disclosed in this invention without departing from the spirit of the invention, and these modifications and combinations are still within the scope of protection of this invention.

Claims

1. A method for evaluating the interference effect of communication signals based on parameter calculation, characterized in that, Includes the following steps: (1) The radiation source target is moved multiple times and the frequency is changed. The attenuation value corresponding to different positions and frequencies of the radiation source target is calculated. The attenuation value is fitted and the standard electromagnetic wave spatial attenuation formula is corrected by the fitting coefficient to obtain the measured electromagnetic wave spatial attenuation formula. Among them, the radiation source target includes communication target and interference source target. (2) Obtain communication target parameter information and interference source target parameter information, and calculate the frequency band overlap, interference time overlap, beam overlap and modulation pattern overlap between the communication target and the interference source target based on the obtained parameter information; and calculate the interference-to-signal ratio using the measured electromagnetic wave spatial attenuation formula, communication target parameter information, interference source target parameter information, distance of communication target from monitoring point and distance of interference source target from monitoring point, and use the calculated interference-to-signal ratio as the power overlap value; (3) Constructing step (2) to calculate the Paramix interference parameter overlap. n Interference effect R n Mapping relationship R n =exp(-Paramix n 2 / 2), where n takes values ​​from 1 to 5, corresponding to frequency band overlap, interference time overlap, beam overlap, modulation pattern overlap, and power overlap, respectively; and weights μ for different interference parameters are set according to the interference cases. n By combining the overlap relationship of the comprehensive interference parameters with the corresponding weights, the interference effect evaluation result is obtained by summing them up. (4) Repeat steps (1) to (3) to obtain the interference effect evaluation results of different frequency points, and calculate the interference effect evaluation level of the frequency hopping network station by weighting.

2. The communication signal interference effect evaluation method based on parameter calculation according to claim 1, characterized in that, The formula for the spatial attenuation of electromagnetic waves measured in step (1) is: ΔL=30.33+26.16*log 10 (freq)+37.6*log 10 (dist) In the formula, freq is the target frequency of the radiation source, dist is the distance between the target radiation source and the monitoring point, and ΔL is the attenuation value.

3. The communication signal interference effect evaluation method based on parameter calculation according to claim 1, characterized in that, The specific process of step (2) is as follows: (2a) Obtain communication target parameter information and interference source target parameter information. The communication target parameter information includes the frequency, bandwidth, level, beam pointing, beamwidth, start time, duration and modulation pattern of the communication signal. The interference source target parameter information includes the frequency, bandwidth, level, beam pointing, beamwidth, start time, end time and modulation pattern of the interference signal. (2b) Calculate the frequency band overlap based on the frequency and bandwidth of the acquired communication signal and the frequency and bandwidth of the interference signal; calculate the interference time overlap based on the duration and start time of the communication signal and the duration and start time of the interference signal; calculate the beam overlap based on the beam direction and beamwidth of the communication signal and the beam direction and beamwidth of the interference signal; calculate the modulation pattern overlap based on the modulation pattern of the communication signal and the modulation pattern of the interference signal. (2c) Based on the measured electromagnetic wave spatial attenuation formula obtained in step (1), the distance dist1 between the communication target and the monitoring point, and the distance dist2 between the interference source target and the monitoring point, calculate the propagation attenuation value ΔL of the communication target and the interference source target. 通信 and ΔL 干扰 ; and utilize the acquired communication signal level T db Communication attenuation value ΔL with target 通信 and interference signal level J db and interference signal attenuation value ΔL 干扰 The calculated interference-to-signal ratio JSR = J db -T db +37.6*log 10 (dist2 / dist1), and the calculated interference-to-signal ratio is used as the power overlap value.

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