Method for rapidly repairing transient electromagnetic damage of radar equipment
By constructing a compensation phase term for interference suppression and echo signal enhancement, the problem of long and high cost of electromagnetic damage repair of existing radar equipment is solved, and a fast and low-cost repair effect is achieved.
Patent Information
- Application Number
- CN202411638814.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-15
- Publication Date
- 2025-02-18
AI Technical Summary
The electromagnetic damage repair methods of existing radar equipment consume a lot of computing resources, resulting in increased costs and too long repair time, which cannot meet the requirements of rapid repair.
By obtaining the normal echo signal and electromagnetic damage signal of radar equipment, the echo signal when there is electromagnetic damage is determined, and the compensation phase term is constructed according to the attack direction of the electromagnetic damage signal, the interference suppression process is performed to obtain the signal after electromagnetic damage suppression. . Then, the signal is enhanced by echo signal to improve the signal-to-noise ratio and achieve rapid repair.
This method effectively reduces the cost of electromagnetic damage repair of radar equipment, shortens repair time, improves repair speed and efficiency, and does not require increasing hardware costs or performing complex operations.
Smart Images
Figure CN119471678A_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the technical field of radar equipment electromagnetic damage repair, and in particular to a method for rapid repair of transient electromagnetic damage to radar equipment. Background Art
[0002] At present, the electromagnetic damage of radar equipment is generally repaired by adaptive beam forming method to complete the rapid repair of transient electromagnetic damage. This method first obtains the incoming direction of electromagnetic damage based on auxiliary test equipment; secondly, according to the incoming direction of electromagnetic damage, calculates the zero point position parameter information required by the beam; then, using the zero point position parameter information required by the beam, the beam pointing is controlled under the action of the beam control device, and the beam adaptive zero point position is aligned with the incoming direction of electromagnetic damage; finally, the signal entering the radar does not contain the incoming direction information of electromagnetic damage.
[0003] However, this repair method consumes a lot of computing resources of the radar, so a large amount of computing resources needs to be added, which leads to a sharp increase in repair costs. In addition, this repair method needs to judge the direction of the electromagnetic damage signal when adjusting the parameters, which takes a very long time and cannot meet the requirements of rapid repair of radar equipment failures.
[0004] Based on this, how to provide a low-cost and short-time method for repairing electromagnetic damage of radar equipment has become a technical problem that needs to be solved urgently in this field. Summary of the invention
[0005] The purpose of this application is to provide a method for quickly repairing transient electromagnetic damage to radar equipment, which can effectively reduce the repair cost of electromagnetic damage to radar equipment and shorten the repair time.
[0006] To achieve the above objectives, this application provides the following solutions:
[0007] The present application provides a method for rapid repair of transient electromagnetic damage to radar equipment, the method for rapid repair of transient electromagnetic damage to radar equipment comprising:
[0008] A normal echo signal and an electromagnetic damage signal of the radar equipment are obtained; the normal echo signal is an echo signal of the radar equipment in a normal working state, and the electromagnetic damage signal is an attack signal of an attack target causing electromagnetic damage to the radar equipment.
[0009] An echo signal of the radar equipment when it is electromagnetically damaged is determined according to the normal echo signal and the electromagnetic damage signal; the echo signal when it is electromagnetically damaged is an echo signal of the radar equipment in an electromagnetically damaged state.
[0010] Based on the echo signal when there is electromagnetic damage, a compensation phase term is constructed according to the incoming direction of the electromagnetic damage signal, and the compensation phase term is used to perform interference suppression processing on the echo signal when there is electromagnetic damage to obtain a signal after electromagnetic damage suppression.
[0011] The signal after electromagnetic damage suppression is subjected to echo signal enhancement processing to obtain an echo signal after enhancement; the echo signal after enhancement is used to determine parameter information of the attack target, and the parameter information of the attack target includes the speed of the attack target, and the distance and angle between the attack target and the radar equipment.
[0012] Optionally, determining, according to the normal echo signal and the electromagnetic damage signal, an echo signal when the radar equipment has electromagnetic damage specifically includes:
[0013] The electromagnetic damage signal is modeled to obtain an additive damage signal of the radar echo signal.
[0014] The echo signal when the electromagnetic damage occurs is calculated according to the additive damage signal and the normal echo signal.
[0015] Optionally, the following formula is used to calculate the echo signal when there is electromagnetic damage:
[0016] s d =s+d r ;
[0017] Among them, s d represents the echo signal when there is electromagnetic damage, s represents the normal echo signal, and d r Represents the additive impairment signal of the radar echo signal.
[0018] Optionally, the compensation phase term is calculated using the following formula:
[0019]
[0020] Among them, s c To compensate for the phase term, θ represents the incoming direction of the electromagnetic damage signal, pi is the circumference of a circle, and j is the imaginary part of the complex number.
[0021] Optionally, the signal after the electromagnetic damage suppression is calculated using the following formula:
[0022] s rc =s d ·s c θ;
[0023] Among them, s rc represents the signal after electromagnetic damage suppression, s d Indicates the echo signal when there is electromagnetic damage, sc θ is the electromagnetic damage suppression factor, s c To compensate for the phase term, θ represents the incoming direction of the electromagnetic damage signal.
[0024] Optionally, the enhanced signal of the echo signal is calculated using the following formula:
[0025]
[0026] Among them, s mrc Represents the signal after the echo signal is enhanced, s rc represents the signal after electromagnetic damage suppression, s d Indicates the echo signal when there is electromagnetic damage, s r represents the echo signal when there is no electromagnetic damage, θ represents the attack direction of the electromagnetic damage signal, and abs(·) represents the absolute value.
[0027] Optionally, after the step of performing echo signal enhancement processing on the signal after electromagnetic damage suppression to obtain a signal after echo signal enhancement, the method for rapid repair of transient electromagnetic damage of radar equipment further includes:
[0028] The parameter information of the attack target is determined according to the enhanced signal of the echo signal.
[0029] Optionally, determining parameter information of the attack target according to the enhanced signal of the echo signal specifically includes:
[0030] The enhanced signal of the echo signal is subjected to digital down-conversion processing and pulse compression processing to obtain a processed enhanced signal.
[0031] Parameter information of the attack target is extracted based on the processed enhanced signal.
[0032] According to the specific embodiments provided in this application, this application discloses the following technical effects:
[0033] The present application provides a method for rapid repair of transient electromagnetic damage of radar equipment, by constructing a compensation phase term according to the incoming direction of the electromagnetic damage signal, and using the compensation phase term to perform interference suppression processing on the echo signal when there is electromagnetic damage, and obtain the signal after the electromagnetic damage is suppressed, so as to achieve the suppression of the electromagnetic damage attack. By performing echo signal enhancement processing on the signal after the electromagnetic damage is suppressed, the signal after the echo signal is enhanced is obtained, thereby achieving the enhancement of the echo signal on the basis of suppressing the electromagnetic attack, improving the signal-to-noise ratio of the echo, and enabling the radar equipment to quickly recover to a normal working state under the condition of electromagnetic attack. The method does not need to increase additional hardware costs, nor does it need to perform a large number of complex calculation processes. It only needs to establish a compensation phase term according to the incoming direction of the electromagnetic damage signal to suppress interference and enhance the echo signal. The calculation is simpler and faster, so it can effectively reduce the cost of repairing electromagnetic damage of radar equipment, greatly shorten the time used for electromagnetic damage repair, and improve the speed and efficiency of electromagnetic damage repair. BRIEF DESCRIPTION OF THE DRAWINGS
[0034] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.
[0035] Figure 1 A flowchart of a method for rapidly repairing transient electromagnetic damage to radar equipment provided in one embodiment of the present application. DETAILED DESCRIPTION
[0036] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.
[0037] In order to make the above-mentioned objects, features and advantages of the present application more obvious and easy to understand, the present application is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.
[0038] like Figure 1 As shown, this embodiment provides a method for rapid repair of transient electromagnetic damage of radar equipment, which can be executed by a computer device, specifically by any type of computer device such as a terminal or server, or by a terminal and a server. The method specifically includes the following steps:
[0039] Step S1, obtaining a normal echo signal and an electromagnetic damage signal of the radar equipment, wherein the normal echo signal is an echo signal of the radar equipment in a normal working state, and the electromagnetic damage signal is an attack signal of the attack target causing electromagnetic damage to the radar equipment.
[0040] Step S2: Determine the echo signal of the radar equipment when it is electromagnetically damaged according to the normal echo signal and the electromagnetic damage signal, wherein the echo signal when it is electromagnetically damaged is the echo signal of the radar equipment in the electromagnetically damaged state.
[0041] In this embodiment, step S2 determines the echo signal when the radar equipment has electromagnetic damage according to the normal echo signal and the electromagnetic damage signal, and specifically includes the following steps:
[0042] Step S21: Model the electromagnetic damage signal to obtain an additive damage signal of the radar echo signal.
[0043] Step S22: Calculate the echo signal when there is electromagnetic damage according to the additive damage signal and the normal echo signal.
[0044] In this embodiment, the following formula is used to calculate the echo signal when there is electromagnetic damage:
[0045] s d =s+d r (1).
[0046] Among them, s d represents the echo signal when there is electromagnetic damage, s represents the normal echo signal, and d r Represents the additive impairment signal of the radar echo signal.
[0047] Step S3: Based on the echo signal when there is electromagnetic damage, a compensation phase term is constructed according to the incoming direction of the electromagnetic damage signal, and the compensation phase term is used to perform interference suppression processing on the echo signal when there is electromagnetic damage to obtain a signal after electromagnetic damage suppression.
[0048] In this embodiment, the compensation phase term is calculated using the following formula:
[0049]
[0050] Among them, s c To compensate for the phase term, θ represents the incoming direction of the electromagnetic damage signal, pi is the circumference of a circle, and j is the imaginary part of the complex number.
[0051] In this embodiment, the following formula is used to calculate the signal after electromagnetic damage suppression:
[0052] s rc =s d ·s cθ (3).
[0053] Among them, s rc represents the signal after electromagnetic damage suppression, s d Indicates the echo signal when there is electromagnetic damage, s c θ is the electromagnetic damage suppression factor, s c To compensate for the phase term, θ represents the incoming direction of the electromagnetic damage signal.
[0054] Step S4: Perform echo signal enhancement processing on the signal after electromagnetic damage suppression to obtain an echo signal enhanced signal. The echo signal enhanced signal is used to determine parameter information of the attack target, and the parameter information of the attack target includes parameter information such as the speed of the attack target, the distance and angle between the attack target and the radar equipment, etc.
[0055] In this embodiment, the signal after the echo signal enhancement is calculated using the following formula:
[0056]
[0057] Among them, s mrc Represents the signal after the echo signal is enhanced, s rc represents the signal after electromagnetic damage suppression, s d Indicates the echo signal when there is electromagnetic damage, s r represents the echo signal when there is no electromagnetic damage, θ represents the attack direction of the electromagnetic damage signal, and abs(·) represents the absolute value.
[0058] In this embodiment, after performing echo signal enhancement processing on the signal after electromagnetic damage suppression in step S4 to obtain the signal after echo signal enhancement, the following steps are also included:
[0059] Step S5: Determine parameter information of the attack target according to the enhanced echo signal.
[0060] In this embodiment, step S5 determines parameter information of the attack target according to the enhanced echo signal, and specifically includes the following steps:
[0061] Step S51: Perform digital down-conversion processing and pulse compression processing on the enhanced echo signal to obtain a processed enhanced signal.
[0062] Step S52: extract parameter information of the attack target according to the processed enhanced signal.
[0063] In order to make the technical solution of this embodiment clearer, the specific implementation steps of the technical solution of this embodiment are described in detail below in the form of examples, which specifically include the following steps:
[0064] (1) Obtain the normal echo signal and electromagnetic damage signal of the radar equipment, and model the electromagnetic damage attack signal as an additive damage signal of the radar echo signal. r , assuming that the normal echo signal without electromagnetic damage is s, and the echo signal with electromagnetic damage is s d =s+d r , where d r It is the additive damage signal of the radar echo signal, that is, the original electromagnetic damage attack signal, specifically refers to the electromagnetic damage attack signal that enters the radar equipment.
[0065] (2) Echo signal s when there is electromagnetic damage d Construct compensation phase term according to the attack direction of electromagnetic damage Where θ represents the incoming direction of the electromagnetic damage signal, which is measured by the auxiliary antenna of the radar equipment with an accuracy within ±10°. c is the compensation phase term.
[0066] (3) Using the compensation phase term s c For the echo signal s when there is electromagnetic damage d Interference suppression processing is performed, that is, s rc =s d ·s c / θ, and obtain the signal s after electromagnetic damage suppression rc .
[0067] In this embodiment, s c / θ is the electromagnetic damage suppression factor. It only needs to adjust the electromagnetic damage suppression factor according to the incoming direction of the electromagnetic damage signal and complete the echo enhancement synchronously. This method does not require increasing the hardware cost, and the radar performance can be repaired quickly, at low cost, and with flexible control.
[0068] (4) Signal s after electromagnetic damage suppression rc Perform echo signal enhancement processing, that is, The signal s after the echo signal enhancement is obtained mrc .
[0069] (5) Using the signal s after the echo signal is enhanced mrc By performing subsequent digital down-conversion, pulse compression and other operations, the parameter information of the attack target can be extracted, including the speed of the attack target, the distance and angle between the attack target and the radar equipment, and other parameter information.
[0070] Compared with the traditional adaptive beam forming method, this embodiment can complete electromagnetic damage suppression and echo enhancement by means of software algorithm only according to the incoming direction of the electromagnetic damage signal, avoiding the calculation of parameter information of the beam adaptive zero point, and does not require adaptive beam control equipment, and does not need to repeatedly determine and adjust parameters according to the incoming direction of the electromagnetic damage signal. It can effectively reduce the repair cost of electromagnetic damage to radar equipment, greatly shorten the time for electromagnetic damage repair, and improve the speed and efficiency of electromagnetic damage repair.
[0071] This embodiment models the transient electromagnetic damage attack signal of the radar equipment as an additive damage signal of the radar echo signal. On the basis of compensating the phase term, the additive damage signal is suppressed by adjusting the electromagnetic damage suppression factor, thereby suppressing the electromagnetic attack by suppressing the additive damage signal, and then strengthening the echo based on the echo prior information to improve the signal-to-noise ratio of the echo, so that the radar equipment can quickly recover to a normal working state under the condition of electromagnetic attack. This method does not need to increase the additional hardware cost of the radar, and the suppression algorithm based on formula (3) and the signal enhancement algorithm based on formula (4) can be adjusted in time according to the intensity of the electromagnetic attack to ensure the suppression effect, and has the advantages of fast suppression speed, low cost, and flexible control.
[0072] In an exemplary embodiment, a computer device may also be provided, including a memory and a processor, wherein a computer program is stored in the memory, and when the processor executes the computer program, the above-mentioned method for rapid repair of transient electromagnetic damage to radar equipment is implemented.
[0073] 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.
[0074] This article uses specific examples to illustrate the principles and implementation methods of this application. The description of the above embodiments is only used to help understand the method and core ideas of this application. At the same time, for those skilled in the art, according to the ideas of this application, there will be changes in the specific implementation methods and application scope. In summary, the content of this specification should not be understood as limiting this application.
Claims
1. A method for rapid repair of transient electromagnetic damage to radar equipment, characterized in that: The method for rapid repair of transient electromagnetic damage of radar equipment comprises: Acquire a normal echo signal and an electromagnetic damage signal of the radar equipment; the normal echo signal is an echo signal of the radar equipment in a normal working state, and the electromagnetic damage signal is an attack signal of an attack target causing electromagnetic damage to the radar equipment; Determine, according to the normal echo signal and the electromagnetic damage signal, an echo signal of the radar equipment when it is electromagnetically damaged; the echo signal when it is electromagnetically damaged is an echo signal of the radar equipment in an electromagnetically damaged state; Based on the echo signal when there is electromagnetic damage, a compensation phase term is constructed according to the incoming direction of the electromagnetic damage signal, and the compensation phase term is used to perform interference suppression processing on the echo signal when there is electromagnetic damage to obtain a signal after electromagnetic damage suppression; The signal after electromagnetic damage suppression is subjected to echo signal enhancement processing to obtain an echo signal after enhancement; the echo signal after enhancement is used to determine parameter information of the attack target, and the parameter information of the attack target includes the speed of the attack target, and the distance and angle between the attack target and the radar equipment.
2. The method for rapid repair of transient electromagnetic damage to radar equipment according to claim 1, characterized in that: Determining, according to the normal echo signal and the electromagnetic damage signal, an echo signal when the radar equipment has electromagnetic damage, specifically includes: Modeling the electromagnetic damage signal to obtain an additive damage signal of the radar echo signal; The echo signal when the electromagnetic damage occurs is calculated according to the additive damage signal and the normal echo signal.
3. The method for rapid repair of transient electromagnetic damage to radar equipment according to claim 2, characterized in that: The following formula is used to calculate the echo signal when there is electromagnetic damage: s d =s+d r ; Among them, s d represents the echo signal when there is electromagnetic damage, s represents the normal echo signal, and d r Represents the additive impairment signal of the radar echo signal.
4. The method for rapid repair of transient electromagnetic damage to radar equipment according to claim 1, characterized in that: The compensation phase term is calculated using the following formula: Among them, s c To compensate for the phase term, θ represents the incoming direction of the electromagnetic damage signal, pi is the circumference of a circle, and j is the imaginary part of the complex number.
5. The method for rapid repair of transient electromagnetic damage to radar equipment according to claim 1, characterized in that: The signal after the electromagnetic damage suppression is calculated using the following formula: s rc =s d ·s c / θ; Among them, s rc represents the signal after electromagnetic damage suppression, s d Indicates the echo signal when there is electromagnetic damage, s c / θ is the electromagnetic damage suppression factor, s c To compensate for the phase term, θ represents the incoming direction of the electromagnetic damage signal.
6. The method for rapid repair of transient electromagnetic damage to radar equipment according to claim 1, characterized in that: The signal after the echo signal enhancement is calculated using the following formula: Among them, s mrc Represents the signal after the echo signal is enhanced, s rc represents the signal after electromagnetic damage suppression, s d Indicates the echo signal when there is electromagnetic damage, s r represents the echo signal when there is no electromagnetic damage, θ represents the attack direction of the electromagnetic damage signal, and abs(·) represents the absolute value.
7. The method for rapid repair of transient electromagnetic damage to radar equipment according to claim 1, characterized in that: After the step of performing echo signal enhancement processing on the signal after electromagnetic damage suppression to obtain a signal after echo signal enhancement, the method for rapid repair of transient electromagnetic damage of radar equipment further includes: The parameter information of the attack target is determined according to the enhanced signal of the echo signal.
8. The method for rapid repair of transient electromagnetic damage to radar equipment according to claim 7, characterized in that: Determining parameter information of the attack target according to the enhanced signal of the echo signal, specifically including: Performing digital down-conversion processing and pulse compression processing on the enhanced signal of the echo signal to obtain a processed enhanced signal; Parameter information of the attack target is extracted based on the processed enhanced signal.