A radar anti-high-power microwave radiation attack system

Abstract

The present invention provides a radar protection system against high-power microwave radiation attacks, comprising a high-power microwave energy sensing module connected to a switch module, a switch module connected to the high-power microwave energy sensing module, a control module, and a protection module, a protection module connected to the switch module, and a control module connected to the switch module. The high-power microwave energy sensing module collects high-power microwave energy entering the radar antenna feed system. The control module outputs a control signal to the switch module during radar transmit pulses, disabling the protection module and allowing the radar's high-power microwave signals to be transmitted. The switch module, working in conjunction with the control module and the high-power microwave energy sensing module, controls the protection module to operate, preventing high-power microwave radiation from entering the radar's receiving front end. This invention can be used to protect radars against high-power microwave radiation attacks, improving their survivability.

Description

Technical Field

[0001] The present invention relates to the field of radar radio frequency signal processing, and in particular to a radar anti-high-power microwave radiation attack system. Background Art

[0002] High-power microwave (HPM) radiation systems are directed energy weapons that use high-power microwave beams to disrupt and interfere with sensitive electronic components in enemy electronic systems, information systems, and communication links, as well as combat personnel. The frequency of these microwaves typically ranges from 300 MHz to 30 GHz, with pulse power in the gigawatt range. These powerful electromagnetic pulses disrupt, damage, and even "hard-kill" electronic equipment, posing an increasingly serious threat to civil aviation radars and other targets.

[0003] Civil aviation radars consist of antennas that radiate electromagnetic waves, power cables, data communication lines, and telephone lines. These devices contain numerous electronic components, making them prime targets for HPM radiation systems. HPM radiation systems utilize extremely strong electromagnetic waves to penetrate electronic devices through both "front doors" and "back doors." If these components are damaged, the entire radar system is destroyed, rendering it unable to control air traffic for aircraft, potentially leading to disaster. Summary of the Invention

[0004] This invention provides a radar anti-high-power microwave radiation attack system. It primarily protects against high-power microwave radiation attacks through the "front-door" coupling pathway, the most important and difficult-to-protect HPM radiation attack pathway for civil aviation radars. By adding a protection module to the feed front end, the system blocks high-power microwave signals from entering the radar's receiving front end when a high-power microwave radiation attack is detected, thereby protecting the radar and improving its survivability.

[0005] A radar protection system against high-power microwave radiation attacks includes a high-power microwave energy sensing module connected to a switch module, a switch module connected to the high-power microwave energy sensing module, a control module, and a protection module, a protection module connected to the switch module, and a control module connected to the switch module. The high-power microwave energy sensing module collects high-power microwave energy entering the radar antenna feed system. During radar transmission pulses, the control module outputs a control signal to the switch module to disable the protection module, allowing the radar's high-power microwave signal to be transmitted. The switch module, working in conjunction with the control module and the high-power microwave energy sensing module, controls the protection module to operate, preventing high-power microwave radiation from entering the radar's receiving front end, thereby enabling the radar to protect against high-power microwave radiation attacks.

[0006] Furthermore, the high-power microwave energy sensing module is located at the front end of the radar feed source and is connected to the switch module to complete the collection of high-power microwave energy entering the radar antenna feed system. The output end of the high-power microwave energy sensing module is connected to the input end of the comparator submodule.

[0007] Further, the switch module includes a comparator submodule connected to the switch submodule and the energy threshold setting submodule, a switch submodule connected to the comparator submodule, and an energy threshold setting submodule connected to the comparator submodule;

[0008] The energy threshold setting submodule is used to set the threshold of high-power microwave energy, that is, the protection threshold;

[0009] The comparator submodule receives the output of the high-power microwave energy sensing module and compares it with the threshold set by the energy threshold setting submodule. If the output of the high-power microwave energy sensing module is greater than the threshold set by the energy threshold setting submodule, the comparator submodule outputs a protection signal to the switch submodule;

[0010] The switch submodule controls the operation of the protection module according to the protection signal output by the comparator submodule and the control signal of the control module. If the radar is transmitting a signal, the switch submodule outputs a signal to turn off the protection module; if the radar is receiving a signal and the comparator submodule outputs a protection signal, the switch submodule outputs a signal to start the protection module, so that the high-power microwave signal cannot enter the radar receiving front end;

[0011] The output end of the comparator submodule is connected to the input end of the switch submodule.

[0012] Furthermore, the control module is controlled by the radar working pulse, outputs a control signal to turn off the protection module during radar transmission, and outputs a control signal to turn on the protection module during radar reception.

[0013] The output end of the control module is connected to the input end of the switch submodule.

[0014] Furthermore, the protection module operates under the control of the switch submodule. If the switch submodule outputs a signal to turn off the protection module, the protection module does not operate, and the high-power microwave signal can pass through the protection module. If the switch submodule outputs a signal to start the protection module, the protection module operates, and the high-power microwave signal cannot pass through the protection module.

[0015] The input end of the protection module is connected to the output end of the switch submodule.

[0016] This invention targets the "front door," the most important attack vector for HPM radiation systems against civil aviation radars. It proposes adding a protection module to the feed front end. This module effectively identifies high-power microwave radiation attacks and prevents high-power microwave signals from entering the radar's receiving front end, thereby protecting the radar and improving its survivability. The widespread application of this invention will further enhance civil aviation radar's ability to resist high-power microwave radiation attacks and maximize its effectiveness in providing air traffic control services. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic structural diagram of one embodiment of the radar anti-high-power microwave radiation attack system of the present invention;

[0018] Figure 2 This is a structural block diagram of the switch module in the present invention;

[0019] In the figure: 1—high-power microwave energy sensing module, 2—switch module, 3—protection module, 4—control module, 21—comparator submodule, 22—energy threshold setting submodule, 23—switch submodule. DETAILED DESCRIPTION

[0020] The technical solutions of the present invention will be described clearly and completely below with reference to the accompanying drawings of the present invention.

[0021] Figure 1 The figure shows a schematic diagram of the structure of one embodiment of a radar system for resisting high-power microwave radiation attacks according to the present invention. The system comprises a high-power microwave energy sensing module 1 connected to a switch module 2; a switch module 2 connected to the high-power microwave energy sensing module 1, a control module 4, and a protection module 3; a protection module 3 connected to the switch module 2; and a control module 4 connected to the switch module 2. The high-power microwave energy sensing module 1 collects high-power microwave energy entering the radar antenna feed system. The control module 4 outputs a control signal to the switch module 2 during radar transmit pulses, disabling the protection module 3 and allowing the radar's high-power microwave signal to be transmitted. The switch module 2, in conjunction with the control module 4 and the high-power microwave energy sensing module 1, controls the protection module 3 to operate, preventing high-power microwave radiation from entering the radar receiving front end, thereby achieving the radar's purpose of resisting high-power microwave radiation attacks.

[0022] In another embodiment, please refer to Figure 2 The high-power microwave energy sensing module 1 is located at the front end of the radar feed source and is connected to the switch module 2 to complete the collection of high-power microwave energy entering the radar antenna feed system. The output end of the high-power microwave energy sensing module 1 is connected to the input end of the comparator submodule 21.

[0023] Further, the switch module 2 includes a comparator submodule 21 connected to the switch submodule 23 and the energy threshold setting submodule 22, a switch submodule 23 connected to the comparator submodule, and an energy threshold setting submodule connected to the comparator submodule 21;

[0024] The energy threshold setting submodule 22 is used to set the threshold of high-power microwave energy, that is, the protection threshold;

[0025] The comparator submodule 21 receives the output of the high-power microwave energy sensing module 1 and compares it with the threshold set by the energy threshold setting submodule 22. If the output of the high-power microwave energy sensing module 1 is greater than the threshold set by the energy threshold setting submodule 22, the comparator submodule 21 outputs a protection signal to the switch submodule 23.

[0026] The switch submodule 23 controls the operation of the protection module 3 according to the protection signal output by the comparator submodule 21 and the control signal of the control module 4. If the radar is transmitting a signal, the switch submodule 23 outputs a signal to shut down the protection module 3; if the radar is receiving a signal and the comparator submodule 21 outputs a protection signal, the switch submodule 23 outputs a signal to start the protection module 3, so that the high-power microwave signal cannot enter the radar receiving front end;

[0027] The output end of the comparator submodule 21 is connected to the input end of the switch submodule 23 .

[0028] Furthermore, the control module 4 is controlled by the radar working pulse, outputs a control signal to turn off the protection module 3 during the period when the radar transmits a high-power pulse, and outputs a control signal to turn on the protection module 3 during the period when the radar receives a signal;

[0029] The output end of the control module 4 is connected to the input end of the switch submodule 23 .

[0030] Furthermore, the protection module 3 operates under the control of the switch submodule 23. If the switch submodule 23 outputs a signal to turn off the protection module 3, the protection module 3 does not operate, and the high-power microwave signal can pass through the protection module. If the switch submodule 23 outputs a signal to start the protection module 3, the protection module 3 operates, and the high-power microwave signal cannot pass through the protection module.

[0031] The input end of the protection module 3 is connected to the output end of the switch submodule 23 .

[0032] The working process of the present invention is:

[0033] The system of the present invention is installed at a suitable location on the radar equipment. During the period when the radar transmits high-power pulses, the control module 4 outputs a control signal to shut down the protection module 3. The protection module 3 does not operate, and the high-power microwave signal can pass through the protection module 3 without affecting the normal operation of the civil aviation radar. During the period when the radar receives signals, the control module 4 outputs a control signal to start the protection module 3. The high-power microwave energy sensing module 1 receives external microwave signals and completes the collection of high-power microwave energy entering the radar antenna feed system. The result is sent to the comparator submodule 21 in the switch module 2 and compared with the threshold set by the energy threshold setting submodule 22. If the energy of the external microwave signal received by the high-power microwave energy sensing module 1 is greater than the threshold set by the energy threshold setting submodule 22, the comparator submodule 21 outputs a protection signal to the switch submodule 23. The switch submodule 23 outputs a signal to start the protection module 3, and the protection module 3 operates. The high-power microwave signal cannot pass through the protection module and cannot enter the front end of the civil aviation radar, thereby protecting the radar from damage and improving the survivability of the radar.

[0034] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any changes or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in the present invention should be included in the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be based on the scope of protection of the claims.

Claims

1. A radar anti-high-power microwave radiation attack system, characterized by: The invention comprises a high-power microwave energy sensing module (1) connected to a switch module (2), a switch module (2) connected to the high-power microwave energy sensing module (1), a control module (4), and a protection module (3), a protection module (3) connected to the switch module (2), and a control module (4) connected to the switch module (2); the high-power microwave energy sensing module (1) completes the collection of high-power microwave energy entering the radar antenna feed system; the control module (4) completes the output of a control signal to the switch module (2) during the radar transmission pulse period, so that the protection module (3) does not work, and the radar high-power microwave signal can be transmitted; The switch module (2) controls the protection module (3) to work under the joint action of the control module (4) and the high-power microwave energy sensing module (1), so that the high-power microwave radiation cannot enter the radar receiving front end, thereby achieving the purpose of the radar resisting the high-power microwave radiation attack; The switch module (2) comprises a comparator submodule (21) connected to the switch submodule (23) and the energy threshold setting submodule (22), a switch submodule (23) connected to the comparator submodule (21), and an energy threshold setting submodule (22) connected to the comparator submodule (21); The energy threshold setting submodule (22) is used to set a protection threshold for high-power microwave energy; The comparator submodule (21) receives the output of the high-power microwave energy sensing module (1), compares it with the threshold set by the energy threshold setting submodule (22), and outputs a protection signal to the switch submodule (23) if the output of the high-power microwave energy sensing module (1) is greater than the threshold set by the energy threshold setting submodule (22); The switch submodule (23) controls the operation of the protection module (3) according to the protection signal output by the comparator submodule (21) and the control signal of the control module (4). If the radar is transmitting a signal, the switch submodule (23) outputs a signal to turn off the protection module (3); if the radar is receiving a signal and the comparator submodule (21) outputs a protection signal, the switch submodule (23) outputs a signal to start the protection module (3), so that the high-power microwave signal cannot enter the radar receiving front end; The output end of the comparator submodule (21) is connected to the input end of the switch submodule (23).

2. The radar anti-high-power microwave radiation attack system according to claim 1, characterized in that: The high-power microwave energy sensing module (1) is located at the front end of the radar feed source and is connected to the switch module (2) to complete the collection of high-power microwave energy entering the radar antenna feed system. The output end of the high-power microwave energy sensing module (1) is connected to the input end of the comparator submodule (21).

3. The radar anti-high-power microwave radiation attack system according to claim 1, characterized in that: The control module (4) is controlled by the radar working pulse, outputs a control signal for turning off the protection module (3) when the radar transmits a high-power pulse, and outputs a control signal for turning on the protection module (3) when the radar receives a signal; The output end of the control module (4) is connected to the input end of the switch submodule (23).

4. The radar anti-high-power microwave radiation attack system according to claim 1, characterized in that: The protection module (3) operates under the control of the switch submodule (23); if the switch submodule (23) outputs a signal to turn off the protection module (3), the protection module (3) does not operate, and high-power microwave signals can pass through the protection module; if the switch submodule (23) outputs a signal to start the protection module (3), the protection module (3) operates, and high-power microwave signals cannot pass through the protection module; The input end of the protection module (3) is connected to the output end of the switch submodule (23).

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