Electromagnetic action performance evaluation method and system based on red-blue confrontation

Abstract

The invention provides an electromagnetic action performance evaluation method based on red-blue confrontation. The method specifically comprises the following steps: obtaining a first effective distance of a radar, a second effective distance of a communication link, a third effective distance from a detection device to a target object, and a first burn-through distance from the radar to the target object; and converting a second burn-through distance from the communication transmitter to the communication receiver and the power of the red and blue double-transmitting intermodulation interference signal into dimensionless values in the same value interval, and calculating by using a weighting mode to finally obtain an efficiency evaluation result. In addition, the invention also provides an electromagnetic action efficiency evaluation system based on red-blue confrontation, and solves the problems that the evaluation method in the prior art is insufficient in refinement, the evaluation index is relatively single, and the evaluation index values are in different dimensions.

Description

Technical Field

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

[0002] Electromagnetic action effectiveness evaluation is an important task in the demand demonstration stage of the red-blue game confrontation. It can comprehensively reflect the technical level 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 action confrontation based on the red-blue game confrontation, the small number of electromagnetic equipment models, and the incomplete coverage of electromagnetic action types, the electromagnetic action effectiveness evaluation method is not refined enough, the evaluation indicators are relatively single, and the values ​​of the evaluation indicators are in different dimensions, resulting in inaccurate evaluation results and lack of objectivity. It is impossible to find problems in the confrontation process and improve the technical level of the subsequent red and blue confrontation parties in the game. Summary of the invention

[0004] The present invention provides an electromagnetic action effectiveness evaluation method and system based on red-blue confrontation, which are used to solve the problems that the evaluation method in the prior art is not refined enough, the evaluation index is relatively single, and the values ​​of the evaluation index are in different dimensions.

[0005] In one aspect, the present invention provides an electromagnetic action effectiveness evaluation method based on red-blue confrontation, the method comprising:

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

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

[0008] Based on the first signal power, the third signal power and a first suppression coefficient of the radar receiver, determining when the interference signal is an effective interference to the radar, and calculating a first effective distance of the radar;

[0009] Based on the second signal power, the fourth signal power and a second suppression coefficient of the communication receiver, determining when the interference signal is an effective interference to the communication receiver, and calculating a second effective distance of the communication link;

[0010] Acquire in real time the fifth signal power of the detection device, the environmental noise attribute and the signal-to-noise ratio threshold of the detection receiver, and calculate the third effective distance from the detection device to the target object;

[0011] Real-time acquisition of 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 and blue dual-transmitter intermodulation interference signal;

[0012] 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 are transformed into dimensionless values ​​in the same value range, and are calculated using a weighted method to obtain a performance evaluation result.

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

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

[0015] comparing 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 effective interference; otherwise, the interference signal is invalid interference.

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

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

[0019]

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

[0021] When there are multiple interference signals, the calculation formula of the first effective distance is:

[0022]

[0023] Among them, ∑ 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 compression coefficient.

[0024] Further, determining when the interference signal effectively interferes with the communication receiver includes:

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

[0026] comparing 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 effective interference; otherwise, the interference signal is invalid interference.

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

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

[0030]

[0031] Among them, P cj represents the fourth signal power; P cs represents the second signal power; K J represents the second suppression coefficient, which is 10dB;

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

[0033]

[0034] Among them, ∑ i P cj,i represents the fourth signal power, i represents the number of the interference information; P cs represents the second signal power; K J It represents the second suppression coefficient, which is 10dB.

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

[0036]

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

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

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

[0040] Furthermore, the method for acquiring the power of the red and blue dual-transmit intermodulation interference signal 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 action effectiveness evaluation system based on red-blue confrontation, the system comprising at least a data acquisition module, a data storage module and a data processing module, which is used to execute any step of the above method.

[0042] In general, the technical solution conceived by the present invention can achieve the following beneficial effects compared with the prior art: the present invention provides an electromagnetic action effectiveness evaluation method and system based on red-blue confrontation, by adding evaluation indicators and converting the evaluation indicators into dimensionless values ​​in the same value range, so that the final effectiveness indicator value can be directly obtained by weighting, and the effectiveness evaluation result can be obtained, making the electromagnetic action effectiveness evaluation more refined and accurate, and providing technical means to support the game confrontation deduction and equipment effectiveness evaluation between the red and blue sides. 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 briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0044] Figure 1 It is a method flow diagram of an electromagnetic action effectiveness evaluation method and system based on red-blue confrontation provided by the present invention;

[0045] Figure 2 It is a schematic diagram of the principle of an electromagnetic action effectiveness evaluation method and system based on red-blue confrontation provided by the present invention. DETAILED DESCRIPTION

[0046] In order to make the purpose, technical solution and advantages of the present invention clearer, the technical solution of the present invention will be clearly and completely described below in combination with the drawings and embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. In addition, the technical features involved in the various embodiments described below 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 variants thereof are intended to cover non-exclusive inclusion, so that a process, method or system including a series of elements includes not only those elements, but also includes other elements not explicitly listed, or also includes elements inherent to such process, method or system. In the absence of further restrictions, the sentence "includes a ..." defines an element, and does not exclude the existence of other identical elements in the process, method or system including the element.

[0048] On the one hand, the present invention provides a method for evaluating the effectiveness of electromagnetic action based on red-blue confrontation, the method comprising the following steps: Figure 1 and Figure 2Shown is a method flow chart and principle diagram of an electromagnetic action effectiveness evaluation method and system based on red-blue confrontation provided by the present invention.

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

[0050] It should be noted that the first signal power is obtained based on the radar transmission power, the radar transmission antenna gain, the radar operating wavelength, the radar reflection cross-sectional area of ​​the target object, and the distance between the target object and the radar; wherein 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 The calculation method is: Among them, P t Indicates radar transmission power; G t represents the radar transmitting antenna gain; λ represents the radar operating wavelength; σ represents the radar reflection cross-sectional area of ​​the target; R t Indicates the distance between the target and the radar.

[0052] The second signal power is obtained based on the transmission 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 The calculation method is: P cs =P t +G t -32-20log(F)-20log(D t )+G r ; Among them, P t Indicates the transmission 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 Indicates the distance between the communication transmitter and the communication receiver; G r Represents the antenna gain of a communication receiver.

[0054] Step 201, when there is active interference, respectively obtain in real time 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] Active interference is the intentional emission or forwarding of certain types of electromagnetic waves to suppress or deceive enemy electronic equipment, which can be divided into suppressive interference, deceptive interference and combined interference. Interference signals refer to the state and fact that the quality of useful signal reception is reduced, damaged or blocked during radio communication, which is manifested as a decrease in communication coverage, poor call quality or inability to communicate.

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

[0057] Therefore, when the radar is subject to active interference, it can obtain the third signal power of the interference signal entering the radar based on the real-time transmission power of the electronic jamming aircraft, the transmission antenna gain of the electronic jamming aircraft, the working wavelength of the electronic jamming aircraft, the antenna gain of the radar's 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 of the interference signal entering the radar rj The calculation method is: Among them, P j Indicates the transmission power of the electronic jammer aircraft; G j represents the transmitting antenna gain of the electronic jamming aircraft; λ represents the working wavelength of the electronic jamming aircraft; G t (θ) represents the antenna gain of the radar antenna in the direction of the electronic jammer aircraft; r j represents polarization mismatch loss; R j Indicates the distance between the electronic jammer aircraft and the radar.

[0059] The communication link is affected by factors such as propagation model, propagation distance, signal-to-interference ratio, etc. The fourth signal power is calculated based on 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 of the interference signal entering the communication link cj The calculation method is: P cj =P j +G j -32-20log(F)-20log(D j )+G r ; Among them, P j Indicates the transmission power of the electronic jammer aircraft; G j represents the transmitting antenna gain of the electronic jammer aircraft; F represents the operating frequency of the communication receiver; D jIndicates the distance between the electronic jammer 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, it is determined that when the interference signal is an effective interference to the radar, and a first effective distance of the radar is calculated.

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

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

[0064] When there is only one jamming signal, that is, when a single electronic jammer aircraft is jamming the radar, the first effective distance R t The calculation formula is:

[0065]

[0066] Among them, P rj represents the third signal power; P rs represents the first signal power; K J represents the first suppression coefficient. When E t When ≥0, it is considered as effective interference. Otherwise, it is invalid interference, and the strength of the interference signal needs to be adjusted until the interference signal becomes effective interference.

[0067] When there are multiple jamming signals, that is, when multiple electronic jamming aircraft jam the radar, the calculation formula for the first effective distance is:

[0068]

[0069] Among them, P rj,i represents the power of each electronic jammer 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 R t When ≥0, it is considered as effective interference. Otherwise, it is invalid interference, and the strength of the interference signal needs to be adjusted until the interference signal becomes effective interference.

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

[0071] As an embodiment of the present invention, determining when an interference signal is effective interference to a communication receiver includes: calculating the ratio of a fourth signal power to a 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 effective interference; otherwise, the interference signal is invalid interference.

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

[0073] When there is only one jamming signal, that is, when a single electronic jammer interferes with communications, 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, which is 10dB. When D t When ≥0, it is considered as effective interference. Otherwise, it is invalid interference, and the strength of the interference signal needs to be adjusted until the interference signal becomes effective interference.

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

[0077]

[0078] Among them, P cj,i Represents the power of each electronic jammer aircraft entering the communication receiver, ∑ 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, which is 10dB. When R t When ≥0, it is considered as effective interference. Otherwise, it is invalid interference, and the strength of the interference signal needs to be adjusted until the interference signal becomes effective interference.

[0079] Step 501: Acquire in real time a fifth signal power of the detection device, an environmental noise attribute, and a signal-to-noise ratio threshold of the detection receiver, and calculate a third effective distance from the detection device to the target object.

[0080] It should be noted that the fifth signal power of the reconnaissance device is obtained based on the transmission power of the radiation source target transmitter, 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 method of the fifth signal power is P = P t +G t -32-20log(F)-20log(D t )+G r ; Among them, P t Indicates the transmission power of the radiation source target transmitter; G t Indicates the antenna gain of the communication transmitter; F indicates the operating frequency of the radiation source target; D t Indicates the distance between the radiation source target and the reconnaissance receiver; G r Represents the antenna gain of the reconnaissance receiver.

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

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

[0083]

[0084] Among them, P represents the fifth signal power; S represents the environmental noise attribute; K represents the signal-to-noise ratio threshold. When D t When ≥0, the radiation source target is considered to be detectable.

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

[0086] The burn-through distance refers to the distance at which the opponent's electronic interference is rendered ineffective.

[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 the radar, due to the enhancement of the echo signal, the distance at which the target is found through the dense interference background, and the interference burn-through distance of the self-defense radar, that is, the maximum distance at which the radar can find the target under the condition of suppressive interference. Usually, the radar increases the self-defense distance by increasing the transmission power or the antenna gain for a short time.

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

[0089] One is the interference burn-through distance of the long-range radar, which is calculated based on the transmit power of the jammer, the radar transmit peak power, the transmit gain of the jammer, the radar transmit / receive gain, the gain of the radar antenna in the direction of the jammer, and the distance from the jammer to 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 It indicates the interference burning distance of the long-range radar to the target object, in km; P J Indicates the transmit power of the jammer in dBm; P T Indicates the radar transmission peak power, in dBm; G J Indicates the transmission gain of the jammer in dB; G T / R Indicates radar transmit / receive gain, in dB; G RJ It indicates 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 ; J / S represents the interference-to-signal ratio, the unit is dB.

[0090] It should be noted that after obtaining the above data, the interference burn-through distance of the long-range 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 parties. In addition, the radar cannot track targets that exceed the burn-through distance.

[0091] The other is the interference burn-through distance of the self-defense radar, which is calculated based on the jammer's transmit power, the radar's transmit peak power, the jammer's transmit gain, and the radar's transmit / receive gain. The calculation method for 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 It indicates the interference burning distance of the self-defense radar to the target object, in km; P J Indicates the transmit power of the jammer in dBm; P T Indicates the radar transmission peak power, in dBm; G J Indicates the transmission gain of the jammer in dB; G T / Rrepresents the radar transmit / receive gain in dB; σ represents the radar cross section (RCS) in m 2 ; J / S represents the interference-to-signal ratio, the unit is dB.

[0092] It should be noted that after obtaining the above 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 parties. In addition, 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 a first burn-through distance from the radar to the target object, for example, the first burn-through distance D is obtained by weighted sum or weighted product. T , as an embodiment of the present invention, the calculation method is: D T =D T1 ω 1 +D 12 ω 2 ; Among them, ω 1 Represents the weight coefficient of long-range radar; ω 2 Indicates 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 transmission power of the jammer, the transmission power of the communication transmitter, the transmission 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 receiving antenna in the direction of the jammer, and the antenna gain of the communication receiver. The second burn-through distance is calculated as follows: 20log(D S )=-P J +P T -G J +G T +20log(D J )-G RJ +G R +J / S; where: D S Indicates the second burn-through distance from the communication transmitter to the communication receiver, in km; P J Indicates the transmit power of the jammer in dBm; P T Indicates the transmission power of the communication transmitter, in dBm; G J Indicates the transmission gain of the jammer in dB; G T Indicates the antenna gain of the communication transmitter in dB; D J Indicates the distance from the jammer to the communication receiver, in km; G RJ It indicates the gain of the communication receiver's receiving antenna in the direction of the jammer, in dB; G RIt represents the antenna gain of the communication receiver in dB; J / S represents the interference-to-signal ratio in dB.

[0095] It should be noted that after obtaining the above 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 parties. In addition, the interfered communication link can still work normally within the burn-through distance.

[0096] The power of the red and blue dual-transmit intermodulation interference signal can be obtained by type II third-order intermodulation interference or type III third-order intermodulation interference. Intermodulation interference is when two or more interference signals are added to the receiver at the same time. Due to the effect of nonlinearity, the combined frequency of the two interferences is sometimes exactly equal to or close to the useful signal frequency and passes through the receiver smoothly.

[0097] The calculation method of the received intermodulation interference signal power of type II third-order intermodulation interference is: P IMR =2P A +P B +10-60lg(ΔFR); where P A Indicates 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 power level of each interference frequency f A 、f B Deviation from the nominal frequency f of the communication receiver 0 The average value, that is, ΔFR=(|f A -f O |+|f B -f O |) / 2. It should be noted that the interference frequency relationships of type II third-order intermodulation interference include but are not limited to 2f A -f B =f 0 .

[0098] The calculation method of the received intermodulation interference signal power of the third-order intermodulation interference is: P IMR =P A +P B +P C +10-60lg(ΔFR); where P A Indicates the power level of transmitter A entering the communication receiver; P B Indicates 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 power level of each interference frequency f A 、f B 、f CDeviation from the nominal frequency f of the communication receiver 0 The average value, that is, ΔFR=(|f A -f 0 |+|f B -f 0 |)+|f C -f 0 | / 3. It should be noted that the frequency relationships of the three types of third-order intermodulation interference include but are not limited to f A +f B -f C =f 0 .

[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 and blue dual-transmitter intermodulation interference signal power into dimensionless values ​​in the same value range, and calculate them using a weighted method to obtain a performance evaluation result.

[0100] It should be noted that since the value range of the underlying evaluation indicators is different in dimensions, it is necessary to transform the underlying evaluation indicators into dimensionless values ​​that belong to the same value range through calculation and aggregation, so that the weighted sum or weighted product method can be used freely to obtain the final performance indicator value. The principle is to use the idea of ​​summary and centralized extraction, selectively select important indicators according to the evaluation objectives, transform them into linear combinations of a few principal components, and use the principal components as new indicators for the evaluation of the effectiveness of the command. For example, the performance function model can be used to transform the underlying evaluation indicators into dimensionless values ​​that belong to the same value range through calculation and aggregation.

[0101] The key to performance evaluation is the process of aggregating the performance values ​​of these terminal performance indicators into comprehensive command and control performance values. The key issue here is to solve the problem of different dimensions of the value range of the underlying indicators. Therefore, with the help of the performance function model, the calculation and aggregation of the performance of the underlying indicators to the upper-level indicators is realized.

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

[0103] The efficiency calculation function for benefit-based indicators is applicable to the situation where the efficiency indicator value grows proportionally to the true value of the indicator. Its function form can be expressed as follows:

[0104]

[0105] in, and They represent the minimum and maximum values ​​of the i-th subordinate performance indicator of the current performance indicator j; I cRepresents the collection of performance indicators of equal electromagnetic action force; T I Represents a benefit-oriented indicator; when I ij The value is greater than or equal to When I ij The value is less than When , it is considered that the index i in the electromagnetic action system performance index scheme has no effect.

[0106] The performance calculation function for cost-based indicators is a linear increasing function, and its function form can be expressed as follows:

[0107]

[0108] in, and They represent the minimum and maximum values ​​of the i-th subordinate performance indicator of the current performance indicator j; I c Represents the collection of performance indicators of equal electromagnetic action force; T 2 Represents a cost-type indicator; when I ij The value is less than When I ij The value is greater than or equal to When , it is considered that the index i in the electromagnetic action system performance index scheme has no effect.

[0109] Based on the known performance target value and performance indicator type, the performance values ​​of cost-based and benefit-based underlying indicators are calculated respectively;

[0110] Based on the obtained underlying indicator data, the weight values ​​of the principal components at each level are obtained. Specifically, the standardized decision matrix is ​​first obtained, that is, the multiple accusation effectiveness indicator vectors of different dimensions mentioned above constitute the decision matrix Y = {y ij} m×n , after normalization by using the averaging method, initial value method and other methods, the decision matrix X = {x ij} m×n ; Then find the covariance matrix of the decision matrix V = {v ij} m×n , where v ij =cov{x i ,x j}; Find the eigenvalues ​​of the covariance matrix λ and the corresponding eigenvectors a, where a = [a 1 ,a 2 ,...,a n ] TThen find the principal component. The value of the i-th principal component can be calculated by the following formula: Among them, a m is the largest characteristic root λ m Finally, the main components are arranged from large to small, and the weight value of each indicator is output using the weight calculation method, such as the entropy weight method or the deviation maximization method.

[0111] Each indicator in the evaluation has different dimensions and orders of magnitude and cannot be directly compared together. Therefore, the numerical values ​​of the indicators need to be standardized to eliminate the differences in their dimensions and orders of magnitude.

[0112] The original decision matrix A generated by the defense value index of heterogeneous targets is ij ) m×n Sample a in ij (i=1,2,…,m;j=1,2,…,n), Z-Score method is used for standardization: Among them, n is the number of indicators; m is the number of targets; Then we get the standardized sample decision matrix B = (b ij ) m×n . Calculate the standardized sample correlation coefficient matrix R, R = B H B. Find the eigenvalues ​​of the correlation matrix R and sort them from large to small: λ 1 ≥λ 2 ≥…≥λ n ≥0 and the corresponding eigenvector β j =[β j1 ,β j2 ,…,β jn ] T (j=1,2,…,n).

[0113] The bottom-level effectiveness indicators after the effectiveness function transformation belong to the dimensionless value of the same value range, so the weighted sum or weighted product method can be used freely to obtain the command effectiveness indicator value of the final top-level indicator. An important step in the evaluation of the command effectiveness of the electromagnetic action system is to establish the effectiveness function model for the transformation of the bottom-level effectiveness indicators to the top-level effectiveness indicators in the indicator system.

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

[0115] In short, the key to effectiveness evaluation is to aggregate the effectiveness values ​​of these terminal effectiveness indicators into comprehensive effectiveness, thereby solving the problem of different dimensions of the value range of the bottom-level indicators. By adding evaluation indicators, the present invention not only clarifies the evaluation indicators and the dependencies between the indicators, but also needs to clarify the evaluation calculation method of each indicator, transforms the bottom-level evaluation indicators into dimensionless values ​​that belong to the same value interval at the same time, and then uses the weighted sum or weighted product method to clarify the calculation method of each performance indicator in the indicator system and the aggregation rules of each effectiveness indicator. The calculation rules of a single indicator are specified by the indicator calculation process, and the calculation process of all indicators constitutes the overall effectiveness evaluation, realizing the quantification of the evaluation indicators, and obtaining the command and control effectiveness indicator value of the final top-level indicator, making the electromagnetic action effectiveness evaluation more precise and accurate, and providing technical means to support the game confrontation deduction and equipment effectiveness evaluation between the red and blue sides.

[0116] It should be noted that, for the aforementioned method embodiments, for the sake of simplicity, they are all expressed as a series of action combinations, but those skilled in the art should be aware that the present application is not limited by the described order of actions, because according to the present application, certain steps can be performed in other orders or simultaneously. Secondly, those skilled in the art should also be aware that the embodiments described in the specification are all preferred embodiments, and the actions and modules involved are not necessarily required by the present application.

[0117] It should be understood that the embodiments described above are merely illustrative, wherein 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 they may be distributed on multiple network units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution of this embodiment. Those of ordinary skill in the art may understand and implement it without creative work.

[0118] The above is only an exemplary embodiment of the present disclosure, and the scope of the present disclosure cannot be limited thereto. That is, any equivalent changes and modifications made according to the teachings of the present disclosure are still within the scope of the present disclosure. After considering the specification and practicing the disclosure here, those skilled in the art will easily think of the implementation scheme of the present disclosure. This application is intended to cover any modification, use or adaptation of the present disclosure, which follows the general principles of the present disclosure and includes common knowledge or customary technical means in the technical field not recorded in the present disclosure. The description and examples are regarded as exemplary only, and the scope and spirit of the present disclosure are defined by the claims.

[0119] The technical features of the above embodiments may be combined arbitrarily. To make the description concise, 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, they should be considered to be within the scope of this specification.

[0120] It will be easily understood by those skilled in the art that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A method for evaluating electromagnetic action effectiveness based on red-blue confrontation, characterized in that: The method comprises: When there is no active interference, respectively obtaining a first signal power of the radar and a second signal power of the communication link; When there is active interference, respectively obtaining in real time a third signal power of the interference signal entering the radar and a fourth signal power of the interference signal entering the communication link; Based on the first signal power, the third signal power and a first suppression coefficient of the radar receiver, determining when the interference signal is an effective interference to the radar, and calculating a first effective distance of the radar; Based on the second signal power, the fourth signal power and a second suppression coefficient of the communication receiver, determining when the interference signal is an effective interference to the communication receiver, and calculating a second effective distance of the communication link; Acquire in real time the fifth signal power of the detection device, the environmental noise attribute and the signal-to-noise ratio threshold of the detection receiver, and calculate the third effective distance from the detection device to the target object; Real-time acquisition of 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 and blue dual-transmitter intermodulation interference signal; 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 are transformed into dimensionless values ​​in the same value range, and are calculated using a weighted method to obtain a performance evaluation result.

2. The electromagnetic action effectiveness evaluation method based on red-blue confrontation as claimed in claim 1, characterized in that: Determining when the interference signal is an effective interference to the radar includes: calculating a 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 effective interference; otherwise, the interference signal is invalid interference.

3. The electromagnetic action effectiveness evaluation method based on red-blue confrontation as claimed in claim 2 is characterized in that: The interference signal is one or more; When there is one interference signal, the calculation formula of the first effective distance is: Among them, P rj represents the third signal power; P rs represents the first signal power; K J represents the first suppression coefficient; When there are multiple interference signals, the calculation formula of the first effective distance is: Among them, ∑ i P rj, represents the third signal power, represents the number of interference information; P rs represents the first signal power; K J represents the first compression coefficient.

4. The electromagnetic action effectiveness evaluation method based on red-blue confrontation as claimed in claim 1, characterized in that: Determining when the interference signal effectively interferes with the communication receiver includes: Calculating a 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 effective interference; otherwise, the interference signal is invalid interference.

5. The electromagnetic action effectiveness evaluation method based on red-blue confrontation as claimed in claim 4 is characterized in that: The interference signal is one or more; When there is one interference signal, the calculation formula for the second effective distance is: Among them, P cj represents the fourth signal power; P cs represents the second signal power; K J represents the second suppression coefficient, which is 10dB; When there are multiple interference signals, the calculation formula for the second effective distance is: Among them, ∑ i P cj, represents the fourth signal power, represents the number of the interference information; P cs represents the second signal power; K J It represents the second suppression coefficient, which is 10dB.

6. The electromagnetic action effectiveness evaluation method based on red-blue confrontation as claimed in claim 1, characterized in that: The calculation formula of the third effective distance is: Among them, P represents the fifth signal power; S represents the environmental noise attribute; and K represents the signal-to-noise ratio threshold.

7. The electromagnetic action effectiveness evaluation method based on red-blue confrontation as claimed in claim 1, characterized in that: 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.

8. The electromagnetic action effectiveness evaluation method based on red-blue confrontation as claimed in claim 1, characterized in that: The weighting method includes weighted sum or weighted product.

9. The electromagnetic action effectiveness evaluation method based on red-blue confrontation as claimed in claim 1, characterized in that: The method for acquiring the power of the red and blue dual-transmit intermodulation interference signal includes type II third-order intermodulation interference or type III third-order intermodulation interference.

10. An electromagnetic action effectiveness evaluation system based on red-blue confrontation, characterized in that: The system at least comprises a data acquisition module, a data storage module and a data processing module, which is used to execute the steps of the method according to any one of claims 1 to 9.

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