An electromagnetic operation effectiveness evaluation method and system based on red-blue confrontation

Abstract

The present invention provides a method for evaluating the electromagnetic operation effectiveness based on red-blue confrontation, which specifically includes: transforming the first effective distance of the radar, the second effective distance of the communication link, the third effective distance from the reconnaissance device to the target, the first burn-through distance from the radar to the target, the second burn-through distance from the communication transmitter to the communication receiver, and the power transformation of the red-blue two-way intermodulation interference signal into dimensionless values in the same value range, calculating using a weighted method, and finally obtaining the effectiveness evaluation result. In addition, the present invention also provides a system for evaluating the electromagnetic operation effectiveness based on red-blue confrontation, which solves the problems of insufficient refinement of the existing technology evaluation method, relatively single evaluation indicators, and different dimensions of the evaluation indicator values.

Description

Technical Field

[0001] The present invention relates to the technical field of simulation and effectiveness evaluation, and particularly to a method and system for evaluating the effectiveness of electromagnetic operations based on red-blue confrontation. Background Art

[0002] Evaluating the effectiveness of electromagnetic operations is an important task in the requirements demonstration stage of red-blue game confrontation. It can comprehensively reflect the technical levels and effectiveness of the red and blue sides when they confront each other under specified environmental conditions.

[0003] However, due to the insufficient intensity of electromagnetic operation confrontation based on red-blue game confrontation currently, the small number of types of electromagnetic equipment models, and the incomplete coverage of electromagnetic operation types, the refinement of the method for evaluating the effectiveness of electromagnetic operations is insufficient, the evaluation indicators are relatively single, and the values of the evaluation indicators are in different dimensions, resulting in inaccurate evaluation results, lack of objectivity, inability to well discover the problems existing in the confrontation process, and inability to improve the technical levels of the red and blue sides during subsequent game confrontation. Summary of the Invention

[0004] The present invention provides a method and system for evaluating the effectiveness of electromagnetic operations based on red-blue confrontation to solve the problems of insufficient refinement of the existing evaluation method, relatively single evaluation indicators, and different dimensions of the values of the evaluation indicators.

[0005] On the one hand, the present invention provides a method for evaluating the effectiveness of electromagnetic operations based on red-blue confrontation, and the method includes:

[0006] When there is no active interference, respectively obtain the first signal power of the radar and the second signal power of the communication link;

[0007] When there is active interference, respectively and real-time obtain the third signal power of the interference signal entering the radar and the fourth signal power of the interference signal entering the communication link;

[0008] Based on the first signal power, the third signal power, and the first suppression coefficient of the radar receiver, when it is determined that the interference signal is an effective interference to the radar, calculate the first effective distance of the radar;

[0009] Based on the second signal power, the fourth signal power, and the second suppression coefficient of the communication receiver, when it is determined that the interference signal is an effective interference to the communication receiver, calculate the second effective distance of the communication link;

[0010] Real-time obtain the fifth signal power of the reconnaissance equipment, the environmental noise attribute, and the signal-to-noise ratio threshold of the reconnaissance receiver, and calculate the third effective distance from the reconnaissance equipment to the target;

[0011] Obtain the first burn-through distance from the radar to the target, the second burn-through distance from the communication transmitter to the communication receiver, and the power of the red-blue duplex intermodulation interference signal in real time;

[0012] Transform the first effective distance, the second effective distance, the third effective distance, the first burn-through distance, the second burn-through distance, and the power of the red-blue duplex intermodulation interference signal into dimensionless values in the same value range, and perform calculations using a weighted method to obtain the effectiveness evaluation result.

[0013] Further, determining that the interference signal is an effective interference to the radar includes:

[0014] Calculate the ratio of the third signal power to the first signal power;

[0015] Compare the magnitude of the ratio with the first suppression coefficient;

[0016] If the ratio is greater than or equal to the first suppression coefficient, the interference signal is an effective interference; otherwise, the interference signal is an ineffective interference.

[0017] Further, the interference signal is one or more;

[0018] When the interference signal is one, the calculation formula for the first effective distance is:

[0019]

[0020] where P rj represents the third signal power; P rs represents the first signal power; K J represents the first suppression coefficient;

[0021] When the interference signal is multiple, the calculation formula for the first effective distance is:

[0022]

[0023] where ∑ i P rj,i represents the third signal power, i represents the number of interference information; P rs represents the first signal power; K J represents the first suppression coefficient.

[0024] Further, determining that the interference signal is an effective interference to the communication receiver includes:

[0025] Calculate the ratio of the fourth signal power to the second signal power;

[0026] Compare the magnitude of the ratio with the second suppression coefficient;

[0027] If the ratio is greater than or equal to the second suppression coefficient, the interference signal is an effective interference; otherwise, the interference signal is an ineffective interference.

[0028] Furthermore, the interference signal is one or more;

[0029] When the interference signal is one, the calculation formula for the second effective distance is:

[0030]

[0031] where P cj represents the fourth signal power; P cs represents the second signal power; K J represents the second suppression coefficient, taking 10 dB;

[0032] When the interference signal is multiple, the calculation formula for the second effective distance is:

[0033]

[0034] where ∑ i P cj,i represents the fourth signal power, i represents the number of interference information; P cs represents the second signal power; K J represents the second suppression coefficient, taking 10 dB.

[0035] Furthermore, the calculation formula for the third effective distance is:

[0036]

[0037] where P represents the fifth signal power; S represents the environmental noise attribute; K represents the signal-to-noise ratio threshold.

[0038] Furthermore, the first burn-through distance includes the interference burn-through distance of the long-range radar and the interference burn-through distance of the self-defense radar.

[0039] Furthermore, the weighting method includes weighted sum or weighted product.

[0040] Furthermore, the acquisition method of the red-blue dual-transmitter intermodulation interference signal power includes type-II third-order intermodulation interference or type-III third-order intermodulation interference.

[0041] On the other hand, the present invention provides an electromagnetic operation effectiveness evaluation system based on red-blue confrontation, and the system at least includes a data acquisition module, a data storage module, and a data processing module, which are used to execute the steps of any one of the above methods.

[0042] Generally speaking, through the technical solution conceived by the present invention, the following beneficial effects can be achieved compared with the prior art: The present invention provides a method and system for evaluating the electromagnetic operation effectiveness based on red-blue confrontation. By adding evaluation indicators and transforming the evaluation indicators into dimensionless values with the same value range, the final effectiveness indicator value can be directly obtained by using the weighting method, and the effectiveness evaluation result can be obtained, making the evaluation of electromagnetic operation effectiveness more refined and accurate, and providing technical means support for the game confrontation deduction between the red and blue sides and the evaluation of equipment effectiveness. BRIEF DESCRIPTION OF THE DRAWINGS

[0043] In order to more clearly illustrate the technical solutions in the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0044] Figure 1 is a schematic flowchart of the method for a method and system for evaluating the electromagnetic operation effectiveness based on red-blue confrontation provided by the present invention;

[0045] Figure 2 is a schematic diagram of the method principle of a method and system for evaluating the electromagnetic operation effectiveness based on red-blue confrontation provided by the present invention. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0046] To make the objectives, technical solutions, and advantages of the present invention clearer, the following will clearly and completely describe the technical solutions in the present invention in combination with the drawings and embodiments in the present invention. Obviously, the described embodiments are some, but not all, of the embodiments of the present invention. In addition, the technical features involved in the following described embodiments can be combined with each other as long as they do not conflict with each other.

[0047] It should be noted that in the description of the embodiments of the present invention, the terms "include", "comprise", or any other variation thereof are intended to cover a non-exclusive inclusion, such that a process, method, or system including a series of elements includes not only those elements but also other elements that are not explicitly listed, or further includes elements inherent to such a process, method, or system. Without further limitation, the element defined by the statement "including one..." does not exclude the existence of additional identical elements in the process, method, or system including the said element.

[0048] On the one hand, the present invention provides a method for evaluating the electromagnetic operation effectiveness based on red-blue confrontation. The method includes the following steps, such as Figure 1 and Figure 2As shown, it is a schematic diagram of the method flow and a schematic diagram of the principle of a method and system for evaluating the electromagnetic operation effectiveness based on red-blue confrontation provided by the present invention.

[0049] Step 101, when there is no active interference, respectively obtain the first signal power of the radar and the second signal power of the communication link.

[0050] It should be noted that the first signal power is obtained based on the radar transmit power, radar transmit antenna gain, radar operating wavelength, radar cross-sectional area of the target, and the distance between the target and the radar; among them, the relationship between the radar operating wavelength λ and the radar operating frequency f is c represents the speed of light.

[0051] The first signal power P rs is calculated as: where P t represents the radar transmit power; G t represents the radar transmit antenna gain; λ represents the radar operating wavelength; σ represents the radar cross-sectional area of the target; R t represents the distance between the target and the radar.

[0052] The second signal power is obtained based on the transmit power of the communication transmitter, the antenna gain of the communication transmitter, the operating frequency of the communication receiver, the distance between the communication transmitter and the communication receiver, and the antenna gain of the communication receiver.

[0053] The second signal power P cs is calculated as: P cs =P t +G t -32 - 20log(F) - 20log(D t ) + G r ; where P t represents the transmit power of the communication transmitter; G t represents the antenna gain of the communication transmitter; F represents the operating frequency of the communication receiver; D t represents the distance between the communication transmitter and the communication receiver; G r represents the antenna gain of the communication receiver.

[0054] Step 201, when there is active interference, respectively and real-time obtain the third signal power of the interference signal entering the radar and the fourth signal power of the interference signal entering the communication link.

[0055] Among them, active interference is the intentional emission or retransmission of a certain type of electromagnetic wave to suppress or deceive enemy electronic equipment, which can be divided into jamming interference, deceptive interference, and combined interference. An interference signal refers to the state and fact that cause the received quality of the useful signal to decline, be damaged, or be hindered during the process of radio communication, manifested as a smaller communication coverage area, poorer call quality, or inability to communicate, etc.

[0056] As an embodiment of the present invention, the interference signal is an electronic jamming aircraft, that is, an aircraft specifically used for reconnaissance, interference, or attack on enemy radars, radio communication equipment, and electronic guidance systems, etc.

[0057] Therefore, when the radar is under active interference, it can obtain the third signal power of the interference signal entering the radar according to the transmission power of the real-time electronic jamming aircraft, the transmission antenna gain of the electronic jamming aircraft, the operating wavelength of the electronic jamming aircraft, the antenna gain of the radar antenna in the direction of the electronic jamming aircraft, and the distance between the electronic jamming aircraft and the radar.

[0058] It should be noted that the third signal power P rj of the interference signal entering the radar is calculated as follows: Among them, P j represents the transmission power of the electronic jamming aircraft; G j represents the transmission antenna gain of the electronic jamming aircraft; λ represents the operating wavelength of the electronic jamming aircraft; G t (θ) represents the antenna gain of the radar antenna in the direction of the electronic jamming aircraft; r j represents the polarization mismatch loss; R j represents the distance between the electronic jamming aircraft and the radar.

[0059] The communication link is affected by factors such as the propagation model, propagation distance, signal-to-interference ratio, etc. The fourth signal power is calculated according to the transmission power of the electronic jamming aircraft, the transmission antenna gain of the electronic jamming aircraft, the operating frequency of the communication receiver, the distance between the electronic jamming aircraft and the communication receiver, and the antenna gain of the communication receiver.

[0060] It should be noted that the fourth signal power P cj of the interference signal entering the communication link is calculated as: P cj =P j +G j -32 - 20log(F) - 20log(D j ) + G r ; among them, P j represents the transmission power of the electronic jamming aircraft; G j represents the transmission antenna gain of the electronic jamming aircraft; F represents the operating frequency of the communication receiver; D jrepresents the distance between the electronic jamming aircraft and the communication receiver; G r represents the gain of the communication receiver antenna.

[0061] Step 301: Based on the first signal power, the third signal power, and the first suppression coefficient of the radar receiver, when it is determined that the interference signal is an effective interference to the radar, calculate the first effective distance of the radar.

[0062] As an embodiment of the present invention, determining that the interference signal is an effective interference to the radar includes: calculating the ratio of the third signal power to the first signal power; comparing the ratio with the first suppression coefficient; if the ratio is greater than or equal to the first suppression coefficient, the interference signal is an effective interference; otherwise, the interference signal is an ineffective interference.

[0063] It should be noted that the interference signal can be one or more.

[0064] When the interference signal is one, that is, for the case of a single electronic jamming aircraft jamming the radar, the first effective distance R t is calculated by the formula:

[0065]

[0066] where P rj represents the third signal power; P rs represents the first signal power; K J represents the first suppression coefficient. When that is, when E t ≥0, it is regarded as an effective interference. Otherwise, it is an ineffective interference, and the intensity of the interference signal needs to be adjusted until the interference signal becomes an effective interference.

[0067] When the interference signal is multiple, that is, for the case of multiple electronic jamming aircraft jamming the radar, the calculation formula of the first effective distance is:

[0068]

[0069] where P rj,i represents the power of each electronic jamming aircraft entering the radar, ∑ i P rj,i represents the third signal power, i represents the number of interference information; P rs represents the first signal power; K J represents the first suppression coefficient. When that is, when R t ≥0, it is regarded as an effective interference. Otherwise, it is an ineffective interference, and the intensity of the interference signal needs to be adjusted until the interference signal becomes an effective interference.

[0070] Step 401: Based on the second signal power, the fourth signal power, and the second suppression coefficient of the communication receiver, when it is determined that the interference signal is an effective interference to the communication receiver, calculate the second effective distance of the communication link.

[0071] As an embodiment of the present invention, determining that the interference signal is an effective interference to the communication receiver includes: calculating the ratio of the fourth signal power to the second signal power; comparing the ratio with the second suppression coefficient; if the ratio is greater than or equal to the second suppression coefficient, the interference signal is an effective interference; otherwise, the interference signal is an ineffective interference.

[0072] It should be noted that the interference signal can be one or more.

[0073] When the interference signal is one, that is, for the case of a single electronic jamming aircraft interfering with communication, the calculation formula for the second effective distance is:

[0074]

[0075] Among them, P cj represents the fourth signal power; P cs represents the second signal power; K J represents the second suppression coefficient, taking 10 dB. When that is, when D t ≥0, it is regarded as an effective interference. Otherwise, it is an ineffective interference, and the intensity of the interference signal needs to be adjusted until the interference signal becomes an effective interference.

[0076] When the interference signal is multiple, the calculation formula for the second effective distance is:

[0077]

[0078] Among them, P cj,i represents the power of each electronic jamming aircraft entering the communication receiver, ∑ i P cj,i represents the fourth signal power, i represents the number of interference messages; P cs represents the second signal power; K J represents the second suppression coefficient, taking 10 dB. When that is, when R t ≥0, it is regarded as an effective interference. Otherwise, it is an ineffective interference, and the intensity of the interference signal needs to be adjusted until the interference signal becomes an effective interference.

[0079] Step 501: Real-time obtain the fifth signal power of the reconnaissance device, the environmental noise attribute, and the signal-to-noise ratio threshold of the reconnaissance receiver, and calculate the third effective distance from the reconnaissance device to the target.

[0080] It should be noted that the fifth signal power of the detection device is obtained based on the transmission power of the transmitter of the radiation source target, the antenna gain of the communication transmitter, the operating frequency of the radiation source target, the distance between the radiation source target and the reconnaissance receiver, and the antenna gain of the reconnaissance receiver. The calculation formula for the fifth signal power is P = P t +G t -32 - 20log(F) - 20log(D t ) + G r ; where P t represents the transmission power of the transmitter of the radiation source target; G t represents the antenna gain of the communication transmitter; F represents the operating frequency of the radiation source target; D t represents the distance between the radiation source target and the reconnaissance receiver; G r represents the antenna gain of the reconnaissance receiver.

[0081] Based on the obtained fifth signal power of the detection device, the environmental noise attribute, and the signal-to-noise ratio threshold of the reconnaissance receiver, the third effective distance from the detection device to the target is calculated.

[0082] As an embodiment of the present invention, the calculation formula for the third effective distance is:

[0083]

[0084] where P represents the fifth signal power; S represents the environmental noise attribute; K represents the signal-to-noise ratio threshold. Only when that is, when D t ≥0, it is regarded as being able to detect the radiation source target.

[0085] Step 601, obtain in real time the first burn-through distance from the radar to the target, the second burn-through distance from the communication transmitter to the communication receiver, and the red-blue dual-transmitter intermodulation interference signal power.

[0086] The burn-through distance is the distance at which the electronic interference of the other party fails.

[0087] As an embodiment of the present invention, the first burn-through distance includes the interference burn-through distance of the long-range radar and the interference burn-through distance of the self-defense radar. For a radar, due to the enhancement of the echo signal, the distance at which the target can be detected through a dense interference background, the interference burn-through distance of the self-defense radar, that is, the maximum distance at which the radar can detect the target under suppression interference. Usually, the radar increases the self-defense distance by briefly increasing the transmission power or increasing the antenna gain.

[0088] It should be noted that the first burn-through distance from the radar to the target includes the burn-through distances in two typical interference scenarios.

[0089] One is the interference burn-through distance of a long-range radar, which is calculated based on the transmitter power of the jammer, the peak transmit power of the radar, the transmit gain of the jammer, the transmit / receive gain of the radar, the gain of the radar antenna in the direction of the jammer, and the distance between the jammer and the radar. The calculation method of the interference burn-through distance of the long-range radar is: 40log(D T1 ) = -71 - P J + P T - G J + 2G T / R - G RJ + 20log(D J ) + 10log(σ) + J / S; where: D T1 represents the interference burn-through distance from the long-range radar to the target, in km; P J represents the transmitter power of the jammer, in dBm; P T represents the peak transmit power of the radar, in dBm; G J represents the transmit gain of the jammer, in dB; G T / R represents the transmit / receive gain of the radar, in dB; G RJ represents the gain of the radar antenna in the direction of the jammer, in dB, usually set to 0; D J represents the distance between the jammer and the radar, in km; σ represents the radar cross section (RCS), in m 2 ²; J / S represents the jammer-to-signal ratio, in dB.

[0090] It should be noted that after obtaining the above various data, the interference burn-through distance of the long-range radar can be directly calculated by the red-blue game confrontation platform according to the real-time positions and spectrum parameters of the red and blue sides. In addition, the radar cannot track targets beyond the burn-through distance.

[0091] The other is the interference burn-through distance of a self-defense radar, which is calculated based on the transmitter power of the jammer, the peak transmit power of the radar, the transmit gain of the jammer, and the transmit / receive gain of the radar. The calculation method of the interference burn-through distance of the self-defense radar is: 20log(D T2 ) = -71 - P J + P T - G J + G t / R + 10log(σ) + J / S; where: D T2 represents the interference burn-through distance from the self-defense radar to the target, in km; P J represents the transmitter power of the jammer, in dBm; P T represents the peak transmit power of the radar, in dBm; G J represents the transmit gain of the jammer, in dB; G T / RIt represents the radar transmit / receive gain, with the unit of dB; σ represents the radar cross section (RCS), with the unit of m 2 ; J / S represents the dry signal-to-interference ratio, with the unit of dB.

[0092] It should be noted that after obtaining the above various data, the interference burn-through distance of the self-defense radar can be directly calculated by the red-blue game confrontation platform based on the real-time positions and spectrum parameters of the red and blue sides. Additionally, the self-defense radar can protect itself from being tracked by the radar outside the burn-through distance.

[0093] As an embodiment of the present invention, the interference burn-through distance of the long-range radar and the interference burn-through distance of the self-defense radar can be superimposed to obtain the first burn-through distance from the radar to the target. For example, the first burn-through distance D can be obtained by using the weighted sum or weighted product method T , as an embodiment of the present invention, its calculation method is: D T = D T1 ω1 + D 12 ω2; where ω1 represents the weight coefficient of the long-range radar; ω2 represents the weight coefficient of the self-defense radar.

[0094] The second burn-through distance from the communication transmitter to the communication receiver is calculated based on the transmit power of the jammer, the transmit power of the communication transmitter, the transmit gain of the jammer, the antenna gain of the communication transmitter, the distance from the jammer to the communication receiver, the gain of the communication receiver's receiving antenna in the direction of the jammer, and the antenna gain of the communication receiver. The calculation method of the second burn-through distance is: 20log(D S ) = -P J + P T - G J + G T + 20log(D J ) - G RJ + G R + J / S; where: D S represents the second burn-through distance from the communication transmitter to the communication receiver, with the unit of km; P J represents the transmit power of the jammer, with the unit of dBm; P T represents the transmit power of the communication transmitter, with the unit of dBm; G J represents the transmit gain of the jammer, with the unit of dB; G T represents the antenna gain of the communication transmitter, with the unit of dB; D J represents the distance from the jammer to the communication receiver, with the unit of km; G RJ represents the gain of the communication receiver's receiving antenna in the direction of the jammer, with the unit of dB; G R represents the antenna gain of the communication receiver, with the unit of dB; J / S represents the dry signal-to-interference ratio, with the unit of dB.

[0095] It should be noted that after obtaining the above various data, the second burn-through distance from the communication transmitter to the communication receiver can be directly calculated by the red-blue game confrontation platform based on the real-time positions and spectrum parameters of the red and blue sides. In addition, the interfered communication link can still work normally within the burn-through distance.

[0096] The acquisition methods of the red-blue two-way intermodulation interference signal power include type-II third-order intermodulation interference or type-III third-order intermodulation interference. Intermodulation interference occurs when two or more interference signals are simultaneously applied to the receiver. Due to the non-linear effect, the combined frequency of these two interferences sometimes happens to be exactly equal to or close to the useful signal frequency and thus passes through the receiver smoothly.

[0097] The calculation method of the received intermodulation interference signal power for type-II third-order intermodulation interference is: P IMR = 2P A + P B + 10 - 60lg(ΔFR); where P A represents the power level of transmitter A entering the communication receiver; P B represents the power level of transmitter B entering the communication receiver; ΔFR represents the receiver intermodulation correction factor, which is the average value of the deviations of each interference frequency f A 、f B from the nominal frequency f0 of the communication receiver. That is, ΔFR = (|f A - f O | + |f B - f O |) / 2. It should be noted that the relationships of each interference frequency for type-II third-order intermodulation interference include but are not limited to 2f A - f B = f0.

[0098] The calculation method of the received intermodulation interference signal power for type-III third-order intermodulation interference is: P IMR = P A + P B + P C + 10 - 60lg(ΔFR); where P A represents the power level of transmitter A entering the communication receiver; P B represents the power level of transmitter B entering the communication receiver; P C represents the power level of transmitter C entering the communication receiver; ΔFR represents the receiver intermodulation correction factor, which is the average value of the deviations of each interference frequency f A 、f B 、f C from the nominal frequency f0 of the communication receiver. That is, ΔFR = (|f A - f0| + |f B - f0|)+|f C-f0| / 3. It should be noted that the interference frequency relationships of the three - type and three - order intermodulation interference include but are not limited to f A +f B -f C = f0.

[0099] Step 701: Transform the first effective distance, the second effective distance, the third effective distance, the first burn - through distance, the second burn - through distance, and the red - blue dual - transmitter intermodulation interference signal power into dimensionless values within the same value range, and use the weighted method for calculation to obtain the effectiveness evaluation result.

[0100] It should be noted that since the value ranges of the underlying evaluation indicators are in different dimensions, it is necessary to calculate and aggregate the underlying evaluation indicators into dimensionless values that simultaneously belong to the same value range, so that the methods of weighted sum or weighted product can be freely used, and then the value of the final effectiveness indicator can be obtained. Its principle is to use the idea of extraction from the summary set. According to the evaluation objective, important indicators are selectively selected and transformed into a linear combination of a few principal components, and the principal components are used as new indicators for the command effectiveness evaluation. For example, the underlying evaluation indicators can be calculated and aggregated into dimensionless values that simultaneously belong to the same value range by using the effectiveness function model.

[0101] The key to effectiveness evaluation lies in the process of aggregating the effectiveness values of these terminal effectiveness indicators into the comprehensive command effectiveness value. The key problem here is to solve the problem of different dimensions of the value ranges of the underlying indicators. Therefore, with the help of the effectiveness function model, the calculation and aggregation of the effectiveness of the underlying indicators to the effectiveness of the upper - layer indicators are realized.

[0102] As an embodiment of the present invention, the effectiveness function model includes an effectiveness calculation function for benefit - type indicators and an effectiveness calculation function for cost - type indicators.

[0103] The effectiveness calculation function for benefit - type indicators is applicable to the case where the effectiveness indicator value is proportional to the true value of the indicator, and its function form can be expressed as follows:

[0104]

[0105] Among them, and respectively represent the minimum and maximum values of the i - th subordinate effectiveness indicator of the current effectiveness indicator j; I c represents the set of this effectiveness indicator in the same electromagnetic action force; T I represents the benefit - type indicator; when the value of I ij is greater than or equal to , it can be considered that this effectiveness indicator i in this electromagnetic action force can meet the requirements of the electromagnetic action system combat target. When the value of I ij is less than When this occurs, it is considered that the index i in the effectiveness index plan of the electromagnetic operation system does not produce any effect.

[0106] The effectiveness calculation function for cost-type indicators is a linearly increasing function, and its functional form can be expressed as follows:

[0107]

[0108] Among them, and respectively represent the minimum and maximum values of the i-th subordinate effectiveness index of the current effectiveness index j; I c represents the set of this effectiveness index among the same electromagnetic operation forces; T2 represents the cost-type indicator; when the value of I ij is less than , it can be considered that the effectiveness index i in this electromagnetic operation force can meet the requirements of the electromagnetic operation system's combat objectives. When the value of I ij is greater than or equal to , it is considered that the index i in the effectiveness index plan of the electromagnetic operation system does not produce any effect.

[0109] On the basis of knowing the effectiveness target value and the type of effectiveness index, calculate the effectiveness values of the cost-type and benefit-type underlying indicators respectively;

[0110] Based on the obtained underlying indicator data for analysis, obtain the weight values of the main components at all levels. Specifically, first find the normalized decision matrix, that is, form the decision matrix Y = {y ij} m×n from the above-mentioned multiple command and control effectiveness index vectors with different dimensions, and obtain the decision matrix X = {x ij} m×n after normalization using methods such as the mean normalization method and the initial value method; then find the covariance matrix V = {v ij} m×n of the decision matrix, where v ij = cov{x i ,x j}; find the eigenvalues λ and the corresponding eigenvectors a of the covariance matrix, where a = [a1, a2,..., a n T . Then find the main component scores. The value of the i-th main component score can be calculated by the following formula: Among them, a m is the eigenvector corresponding to the largest eigenvalue λ m . Finally, according to the arrangement of the main component scores from large to small, use the weight calculation method to output the weight values of each index, such as the entropy weight method or the deviation maximization method, etc.

[0111] Each index in the evaluation has different dimensions and different orders of magnitude, and cannot be directly compared together. Therefore, it is necessary to standardize the values of the indexes to eliminate the differences in their dimensions and orders of magnitude.

[0112] For the original decision matrix A = (a ij ) m×n generated by the heterogeneous target defense value indexes, the samples a ij (i = 1, 2, …, m; j = 1, 2, …, n) in it are standardized by the Z-Score method: where n is the number of indexes; m is the number of targets; Then the standardized sample decision matrix B = (b ij ) m×n is obtained. Calculate the standardized sample correlation coefficient matrix R, R = B H B. Obtain the eigenvalues of the correlation matrix R and sort them from largest to smallest: λ1 ≥ λ2 ≥ … ≥ λ n ≥ 0 and the corresponding eigenvectors β j = [β j1 , β j2 , …, β jn T (j = 1, 2, …, n).

[0113] The underlying effectiveness indexes after being transformed by the effectiveness function belong to dimensionless values in the same value range at the same time. Therefore, the methods of weighted sum or weighted product can be freely used to obtain the value of the final top-level index of the command effectiveness index. An important step in the evaluation of the command effectiveness of the electromagnetic operation system is to establish the effectiveness function model for the transformation of the underlying effectiveness indexes to the top-level effectiveness indexes in the index system.

[0114] On the other hand, the present invention also provides an electromagnetic operation effectiveness evaluation system based on red-blue confrontation. The system at least includes a data acquisition module, a data storage module and a data processing module, which are used to execute the steps of any one of the above methods. Since the technical features of the system are consistent with those of the method, they will not be described in detail one by one.

[0115] ​In summary, the key to effectiveness evaluation lies in aggregating the effectiveness values of these end - effectiveness indicators into a comprehensive effectiveness, thereby solving the problem of different dimensions of the value ranges of underlying indicators. By adding evaluation indicators, the present invention not only clarifies the evaluation indicators and the dependencies between them, but also needs to clarify the evaluation calculation methods for each indicator, transforms the underlying evaluation indicators into dimensionless values that simultaneously belong to the same value range, and then uses the method of weighted sum or weighted product to clarify the calculation methods for each performance indicator in the indicator system and the aggregation rules for each effectiveness indicator. The calculation rules for individual indicators are specified by the indicator calculation process, and the calculation processes for all indicators constitute the overall effectiveness evaluation, realizing the quantification of evaluation indicators, obtaining the values of the command effectiveness indicators of the final top - level indicators, making the electromagnetic operation effectiveness evaluation more refined and accurate, and providing technical means support for the confrontation deduction between the red and blue sides and the equipment effectiveness evaluation.

[0116] It should be noted that, for the foregoing method embodiments, for the sake of simple description, they are all expressed as a series of action combinations. However, those skilled in the art should know that this application is not limited by the described action sequence, because according to this application, certain steps can be performed in other sequences or simultaneously. Secondly, those skilled in the art should also know that the embodiments described in the specification are all preferred embodiments, and the actions and modules involved are not necessarily essential to this application.

[0117] It should be understood that the above - described embodiments are merely illustrative. The units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed to multiple network units. Some or all of the modules can be selected according to actual needs to achieve the purpose of the solution of this embodiment. Those of ordinary skill in the art can understand and implement it without creative efforts.

[0118] The above - mentioned are only exemplary embodiments of the present disclosure, and the scope of the present disclosure cannot be limited thereby. That is, all equivalent changes and modifications made according to the teachings of the present disclosure still fall within the scope covered by the present disclosure. After considering the specification and practicing the present disclosure, those skilled in the art will easily think of other implementation schemes of the present disclosure. This application aims to cover any variations, uses, or adaptive changes of the present disclosure, which follow the general principles of the present disclosure and include the common general knowledge or conventional technical means in the technical field not recorded in the present disclosure. The specification and embodiments are only regarded as exemplary, and the scope and spirit of the present disclosure are defined by the claims.

[0119] The technical features of the above embodiments can be combined arbitrarily. For the sake of concise description, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, it should be considered as the scope described in this specification.

[0120] Those skilled in the art can easily understand that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent replacements, and improvements made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. An electromagnetic operation effectiveness evaluation method based on red-blue confrontation, characterized in that The method includes: When there is no active interference, respectively obtain the first signal power of the radar and the second signal power of the communication link; When there is active interference, respectively and real-time obtain the third signal power of the interference signal entering the radar and the fourth signal power of the interference signal entering the communication link; Based on the first signal power, the third signal power and the first suppression coefficient of the radar receiver, determine that when the interference signal is an effective interference to the radar, calculate the first effective distance of the radar; Based on the second signal power, the fourth signal power and the second suppression coefficient of the communication receiver, determine that when the interference signal is an effective interference to the communication receiver, calculate the second effective distance of the communication link; Real-time obtain the fifth signal power of the reconnaissance device, the environmental noise attribute and the signal-to-noise ratio threshold of the reconnaissance receiver, and calculate the third effective distance from the reconnaissance device to the target; Real-time obtain the first burn-through distance from the radar to the target, the second burn-through distance from the communication transmitter to the communication receiver, and the red-blue two-way intermodulation interference signal power; Transform the first effective distance, the second effective distance, the third effective distance, the first burn-through distance, the second burn-through distance and the red-blue two-way intermodulation interference signal power into dimensionless values in the same value range, and perform calculations using a weighted method to obtain the effectiveness evaluation result; Among them, determining that the interference signal is an effective interference to the radar includes: Calculate the ratio of the third signal power to the first signal power; Compare the size of the ratio with the first suppression coefficient; If the ratio is greater than or equal to the first suppression coefficient, the interference signal is an effective interference; otherwise, the interference signal is an ineffective interference; Determining that the interference signal is an effective interference to the communication receiver includes: Calculate the ratio of the fourth signal power to the second signal power; Compare the size of the ratio with the second suppression coefficient; If the ratio is greater than or equal to the second suppression coefficient, the interference signal is an effective interference; otherwise, the interference signal is an ineffective interference; The interference signal is one or more; When the interference signal is one, the calculation formula for the first effective distance is: ； Among them, represents the third signal power; represents the first signal power; represents the first suppression coefficient; When the interference signal is multiple, the calculation formula for the first effective distance is: ； Among them, represents the third signal power, represents the number of the interference signals; represents the first signal power; represents the first suppression coefficient.

2. The electromagnetic operation effectiveness evaluation method based on red-blue confrontation according to claim 1, wherein, The interference signal is one or more; When the interference signal is one, the calculation formula for the second effective distance is: ； Among them, represents the fourth signal power; represents the second signal power; represents the second suppression coefficient, taking 10 dB; When the interference signal is multiple, the calculation formula for the second effective distance is: ； Among them, represents the fourth signal power, represents the number of the interference signals; represents the second signal power; represents the second suppression coefficient, taking 10 dB.

3. The electromagnetic operation effectiveness evaluation method based on red-blue confrontation according to claim 1, wherein The calculation formula for the third effective distance is: ； Wherein, represents the fifth signal power; represents the environmental noise attribute; represents the signal-to-noise ratio threshold.

4. The electromagnetic operation effectiveness evaluation method based on red-blue confrontation according to claim 1, wherein The first burn-through distance includes the interference burn-through distance of the long-range radar and the interference burn-through distance of the self-defense radar.

5. A method for evaluating the electromagnetic operation effectiveness based on red-blue confrontation according to claim 1, characterized in that The weighted method includes weighted sum or weighted product.

6. The electromagnetic operation effectiveness evaluation method based on red and blue confrontation according to claim 1, characterized in that, The acquisition method of the red-blue two-way intermodulation interference signal power includes type-II third-order intermodulation interference or type-III third-order intermodulation interference.

7. An electromagnetic operation effectiveness evaluation system based on red-blue confrontation, characterized in that The system at least includes a data acquisition module, a data storage module and a data processing module, which are used to execute the steps of the method described in any one of claims 1 to 6.

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