Multi-band interception jammer based on light guide microwaves

Abstract

The invention discloses a multiband intercept jammer based on light guide microwaves. The multiband intercept jammer comprises a radar detection system, a photoelectric tracking system, a radio monitoring system, an intercept jamming system and a master control system, the radar detection system is used for carrying out target detection on an intercept jammer jurisdiction airspace and completing acquisition of target motion parameter information after a target is detected; the photoelectric tracking system is used for identifying and tracking a target in a jurisdiction airspace of the interception jammer and transmitting a real-time image to the main control system; the radio monitoring system is used for monitoring, receiving and analyzing a target flight control signal so as to obtain azimuth information of a target; the interception interference system is used for implementing suppression interference on a target flight control signal to force a target to land; the master control system is used for processing information collected by the radar detection system, the photoelectric tracking system, the radio monitoring system and the interception interference system and sending control commands.

Description

Technical Field

[0001] The present invention relates to the field of aircraft countermeasure technology, and in particular to a multi-band interception jammer based on optically guided microwaves. Background Art

[0002] The target is unmanned flying equipment and manned aircraft that are controlled by radio flight control signal equipment and self-contained program control devices. Due to the low flight altitude, small size and slow flight speed of the target, the use scenarios are relatively wide. At present, it has been widely used in aerial photography, agriculture, plant protection, selfies, express transportation, disaster relief, wildlife observation, infectious disease monitoring, surveying and mapping, news reporting and other fields. In recent years, aircraft technology has become increasingly mature. While its application has become more and more widespread, the control accidents and related safety issues caused by aircraft have become increasingly normalized. Therefore, the task of countering and handling aircraft accidents and terrorist attacks will be very arduous.

[0003] At present, the main means of interception against targets include laser damage strikes, missile attacks, capture network capture and radio signal interference. These interception methods all have corresponding shortcomings, such as: laser damage strikes have great safety hazards, especially in environments such as airports, the wreckage produced after the target is shot down by the laser will cause secondary damage to the ground; missile attacks are costly; capture network capture has a short range and the effect is not obvious; radio signal interference has the advantages of being green, safe, and low-cost, but its disadvantages are: on the one hand, the frequency of the transmitted electrical signal is single or the frequency band is narrow, resulting in a very narrow target range of the system; on the other hand, the transmission power is low and the system has a short range. There are three main types of aircraft intercept jammers disclosed in existing literature:

[0004] The invention patent (CN110455127B) authorized in 2024, "A drone interception device based on a capture net array and its working method", adopts an aircraft interception device based on a capture net array and its working method, and forms a capture net array by launching multiple sets of capture nets, thereby achieving the interception of aircraft. This invention uses the capture net method, which has the disadvantages of short capture distance and unsatisfactory capture effect.

[0005] The invention patent (CN114508966B) authorized in 2023, "A mobile defense system for ground-to-air joint multi-level interception", uses laser weapons to intercept target aircraft, but the wreckage produced after a successful interception poses a major safety hazard to the ground.

[0006] The invention patent (CN110207545B) authorized in 2022, "A drone interception system", uses a combination of an interception net and electromagnetic interference to intercept the target aircraft, but does not involve the frequency of the radio signals emitted by the electromagnetic interference, and fails to achieve multi-band radio signal interference.

[0007] At present, the publicly reported literature on jammers that use radio interference methods all adopt single-frequency or frequency-hopping technical solutions, and do not involve multi-band aircraft jammers. However, multi-band aircraft interception jammers are urgently needed in practical applications.

[0008] In summary, there is currently no public literature regarding a multi-band interception jammer. Summary of the invention

[0009] In view of the deficiencies in the prior art, the present invention provides a multi-band interception jammer based on optical microwaves.

[0010] To achieve the above purpose, the technical solution adopted by the present invention is as follows:

[0011] The present invention provides a multi-band interception jammer based on optical microwaves, including a radar detection system, an optoelectronic tracking system, a radio monitoring system, an interception jammer system and a main control system;

[0012] The radar detection system is used to detect targets in the airspace under the jurisdiction of the interceptor jammer, and complete the collection of target motion parameter information after detecting the target;

[0013] The optoelectronic tracking system is used to identify and track targets within the airspace under the jurisdiction of the interceptor jammer, and transmit real-time images to the main control system;

[0014] The radio monitoring system is used to monitor, receive and analyze target flight control signals, thereby obtaining the target's position information;

[0015] The interception and jamming system is used to generate and transmit tunable microwave signals to suppress and jam the target flight control signals, thereby forcing the target to land;

[0016] The main control system is used for processing information collected by the radar detection system, optoelectronic tracking system, radio monitoring system, and interception and interference system in the system and for sending control commands.

[0017] Furthermore, the radar detection system uses a phased array radar to detect targets within the jurisdictional airspace.

[0018] Furthermore, the photoelectric tracking system is composed of a high-definition camera, an infrared thermal imager, a precision servo turntable and a high-precision tracking module.

[0019] Furthermore, the radio monitoring system consists of a high-gain receiving antenna and a host.

[0020] Furthermore, the interception and jamming system is composed of a pulse drive source, a high-energy pulse cluster fiber laser, a photoconductive semiconductor switch and a radiation component;

[0021] The pulse driving source provides a voltage of 3kv to 10kv for the photoconductive semiconductor switch to ensure that the photoconductive semiconductor switch can work normally;

[0022] The pulse driving source provides voltage to the high-energy pulse cluster fiber laser to ensure that the high-energy pulse cluster fiber laser can operate normally;

[0023] The high-energy pulse cluster fiber laser comprises a high-frequency modulation module and an optical power amplification module. The high-energy pulse cluster fiber laser outputs high-energy laser pulses with sub-pulse frequencies continuously tunable from 0.5 GHz to 10 GHz to a photoconductive semiconductor switch;

[0024] The photoconductive semiconductor switch outputs a tunable microwave signal with a frequency of 0.5 GHz to 10 GHz consistent with the incident laser pulse parameters to the radiation component according to the voltage input by the pulse driving source and the laser pulse input by the high-energy pulse cluster fiber laser;

[0025] The radiation component is used to transmit microwave signals to intercept and interfere with targets.

[0026] Furthermore, the high-frequency modulation module includes an electro-optical intensity modulator and its driving circuit, and an arbitrary signal generator;

[0027] The arbitrary signal generator can output a high-frequency electrical signal of arbitrary waveform in the GHz range;

[0028] The input end of the electro-optic intensity modulator is connected to the output end of the previous optical path, the arbitrary signal generator is connected to the input end of the electro-optic intensity modulator driving circuit by a coaxial signal line, and the output end of the electro-optic intensity modulator driving circuit is connected to the RF input end of the electro-optic intensity modulator by a coaxial signal line. The frequency of the arbitrary signal generator is adjusted to achieve continuous tuning of the sub-pulse frequency of the pulse cluster laser from 0.5 GHz to 10 GHz, thereby generating a 0.5 GHz to 10 GHz continuously tunable microwave signal.

[0029] Furthermore, the optical microwave-based wide-band navigation deception, suppression and interference integrated system can be loaded on a mobile platform.

[0030] The present invention also provides a working method of the above-mentioned multi-band interception jammer based on optical microwave, comprising the following steps:

[0031] S1. The radar detection system detects the target, collects the target motion parameter information and sends the target motion parameter information to the optoelectronic tracking system;

[0032] S2. The precision servo turntable and high-precision tracking module of the optoelectronic tracking system track the target according to the target motion parameter information provided by the radar detection system, and then use a high-definition camera to capture the image of the target in the airspace under the jurisdiction of the interceptor jammer, and match the image of the target in the airspace under the jurisdiction of the interceptor jammer with the aircraft database for feature matching, and cooperate with the infrared thermal imager to complete the target recognition;

[0033] S3. The radio monitoring system monitors, receives and analyzes the flight control signal of the target, thereby obtaining the target's position information; the main control system determines whether the target is within the airspace under the jurisdiction of the intercept jammer according to the airspace scope of jurisdiction set by the intercept jammer and the target's position information. When the target's position is within the airspace under jurisdiction, the verification result is determined to be "true", and the main control system sends a control command to the intercept jammer system to start the intercept jammer system; when the target's position is not within the airspace under jurisdiction, the verification result is determined to be "false", and the main control system determines that the target's position information is a false alarm, and deletes the target from the radar detection system;

[0034] S4. After receiving the control command, the interception and interference system emits microwave signals to interfere with the flight control signal of the target, causing the target to lose control and complete the disposal.

[0035] Compared with the prior art, the technical effects that the present invention can produce are:

[0036] The multi-band interception jammer based on optical microwave technology provided by the present invention adopts a multi-band tunable microwave signal generated based on optical microwave technology to interfere with the flight control signal of the target. It can tune microwave signals of different frequencies according to the interception and interference requirements, realize multi-band and high-power radio signal interference, and expand the target range.

[0037] The present invention transmits the target motion parameter information collected by the radar detection system to the optoelectronic tracking system, and then the precision servo turntable and high-precision tracking module of the optoelectronic tracking system track the target according to the target motion parameter information, thereby realizing real-time tracking of the target; then, the image of the target in the airspace under the jurisdiction of the jammer taken by the high-definition camera is feature matched with the aircraft database, and the target is identified in conjunction with the infrared thermal imager, and the preliminary identification of the target is further completed on the basis of real-time tracking of the target; then, the azimuth information of the target obtained by the radio monitoring system is further compared and identified with the jurisdiction airspace range set by the jammer, so as to judge whether the detected target is the target of action; the present invention adopts a combination of radar detection, optoelectronic detection and radio detection to improve the accuracy and speed of target detection and identification of the system, and the present application can detect and identify the target in real time and accurately, and reduce the probability of accidental injury to non-targets.

[0038] The present invention has the advantages of a wide target range, a long range, and strong maneuverability, and can meet the actual needs of target defense in various important and sensitive airspaces. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.

[0040] Figure 1 A schematic diagram of a multi-band interceptor structure based on optical microwave technology provided by an embodiment

[0041] Figure 2 A schematic diagram of the working process of a multi-band interception jammer based on optical microwave technology provided by an embodiment;

[0042] Figure 3 A schematic diagram of the structure of an interception and interference system provided by an embodiment;

[0043] Figure 4 A schematic diagram of the workflow of an interception and interference system provided in one embodiment. DETAILED DESCRIPTION

[0044] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0045] Reference Figure 1 , one embodiment provides a multi-band interception jammer based on optical microwave technology, including a radar detection system, an optoelectronic tracking system, a radio monitoring system, an interception jammer system and a main control system;

[0046] The radar detection system is used to detect targets in the airspace under the jurisdiction of the interceptor jammer, and complete the collection of target motion parameter information after detecting the target;

[0047] The optoelectronic tracking system is used to identify and track targets within the airspace under the jurisdiction of the interceptor jammer, and transmit real-time images to the main control system;

[0048] The radio monitoring system is used to monitor, receive and analyze target flight control signals, thereby obtaining the target's position information;

[0049] The interception and jamming system is used to generate and transmit tunable microwave signals to suppress and jam the target flight control signals, thereby forcing the target to land;

[0050] The main control system is used for processing information collected by the radar detection system, optoelectronic tracking system, radio monitoring system, and interception and interference system in the system and for sending control commands.

[0051] The radar detection system uses a phased array radar to detect targets within the jurisdictional airspace.

[0052] The photoelectric tracking system consists of a high-definition camera, an infrared thermal imager, a precision servo turntable and a high-precision tracking module.

[0053] The radio monitoring system consists of a high-gain receiving antenna and a host.

[0054] Reference Figure 3 , the interception and interference system is composed of a pulse drive source, a high-energy pulse cluster fiber laser, a photoconductive semiconductor switch and a radiation component;

[0055] The pulse driving source provides a voltage of 3kv to 10kv for the photoconductive semiconductor switch to ensure that the photoconductive semiconductor switch can work normally;

[0056] The pulse driving source provides voltage to the high-energy pulse cluster fiber laser to ensure that the high-energy pulse cluster fiber laser can operate normally;

[0057] The high-energy pulse cluster fiber laser comprises a high-frequency modulation module and an optical power amplification module. The high-energy pulse cluster fiber laser outputs high-energy laser pulses with sub-pulse frequencies continuously tunable from 0.5 GHz to 10 GHz to a photoconductive semiconductor switch;

[0058] The photoconductive semiconductor switch outputs a tunable microwave signal with a frequency of 0.5 GHz to 10 GHz consistent with the incident laser pulse parameters to the radiation component according to the voltage input by the pulse driving source and the laser pulse input by the high-energy pulse cluster fiber laser;

[0059] The radiation component is used to transmit microwave signals to intercept and interfere with targets.

[0060] The high-frequency modulation module includes an electro-optical intensity modulator and its driving circuit, and an arbitrary signal generator;

[0061] The arbitrary signal generator can output a high-frequency electrical signal of arbitrary waveform in the GHz range;

[0062] The input end of the electro-optic intensity modulator is connected to the output end of the previous optical path, the arbitrary signal generator is connected to the input end of the electro-optic intensity modulator driving circuit by a coaxial signal line, and the output end of the electro-optic intensity modulator driving circuit is connected to the RF input end of the electro-optic intensity modulator by a coaxial signal line. The frequency of the arbitrary signal generator is adjusted to achieve continuous tuning of the sub-pulse frequency of the pulse cluster laser from 0.5 GHz to 10 GHz, thereby generating a 0.5 GHz to 10 GHz continuously tunable microwave signal.

[0063] The multi-band interception jammer based on optically guided microwaves can be loaded on a mobile platform.

[0064] Reference Figure 2 One embodiment provides a working method of the above-mentioned multi-band interception jammer based on optical microwave, comprising the following steps:

[0065] S1. The radar detection system detects the target, collects the target motion parameter information and sends the target motion parameter information to the optoelectronic tracking system;

[0066] S2. The precision servo turntable and high-precision tracking module of the optoelectronic tracking system track the target according to the target motion parameter information provided by the radar detection system, and then use a high-definition camera to capture the image of the target in the airspace under the jurisdiction of the interceptor jammer, and match the image of the target in the airspace under the jurisdiction of the interceptor jammer with the aircraft database for feature matching, and cooperate with the infrared thermal imager to complete the target recognition;

[0067] S3. The radio monitoring system monitors, receives and analyzes the flight control signal of the target, thereby obtaining the target's position information; the main control system determines whether the target is within the airspace under the jurisdiction of the intercept jammer according to the airspace scope of jurisdiction set by the intercept jammer and the target's position information. When the target's position is within the airspace under jurisdiction, the verification result is determined to be "true", and the main control system sends a control command to the intercept jammer system to start the intercept jammer system; when the target's position is not within the airspace under jurisdiction, the verification result is determined to be "false", and the main control system determines that the target's position information is a false alarm, and deletes the target from the radar detection system;

[0068] S4. After receiving the control command, the interception and interference system emits microwave signals to interfere with the flight control signal of the target, causing the target to lose control and complete the target disposal.

[0069] The interception jamming system transmits microwave signals to interfere with the flight control of the target, including: the interception jamming system transmits microwave signals to block the flight control signals of the target, causing the target to lose control;

[0070] Reference Figure 4 Specifically, the main control system sends a control instruction to the interception interference system according to the frequency of the target flight control signal monitored by the radio monitoring system. The interception interference system generates and transmits a high-power microwave signal with the same frequency as the target flight control signal, thereby interfering with or blocking the target ground control center's control of the target's flight attitude; the radar detection subsystem collects the target motion parameter information of the target under the action of the interception interference microwave signal to determine the target's motion state. If the target is in a forced landing state, it means that the target disposal is completed; if the target is in a hovering state, the main control system sends a control instruction to the interception interference system again. The interception interference system generates and transmits a high-power microwave signal with the same frequency as the target flight control signal again, interfering with or blocking the target ground control center's control of the target's flight attitude, and collects the target's motion parameter information to determine the target's motion state, and the above steps are repeated until the target disposal is completed.

[0071] Matters not covered by the present invention are known technologies.

[0072] 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.

[0073] The above-described embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the invention. It should be pointed out that, for a person of ordinary skill in the art, several modifications and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the present application shall be subject to the attached claims.

[0074] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A multi-band interception jammer based on optical microwaves, characterized in that: Including radar detection system, optoelectronic tracking system, radio monitoring system, interception and jamming system and main control system; The radar detection system is used to detect targets in the airspace under the jurisdiction of the interceptor jammer, and complete the collection of target motion parameter information after detecting the target; The optoelectronic tracking system is used to identify and track targets within the airspace under the jurisdiction of the interceptor jammer, and transmit real-time images to the main control system; The radio monitoring system is used to monitor, receive and analyze target flight control signals, thereby obtaining the target's position information; The interception and jamming system is used to generate and transmit tunable microwave signals to suppress and jam the target flight control signals, thereby forcing the target to land; The main control system is used for processing information collected by the radar detection system, optoelectronic tracking system, radio monitoring system, and interception and interference system in the system and for sending control commands.

2. A multi-band interception jammer based on optical microwaves as claimed in claim 1, characterized in that: The radar detection system uses a phased array radar to detect targets within the jurisdictional airspace.

3. A multi-band interception jammer based on optical microwaves as claimed in claim 1, characterized in that: The photoelectric tracking system consists of a high-definition camera, an infrared thermal imager, a precision servo turntable and a high-precision tracking module.

4. The multi-band interception jammer based on optical microwave according to claim 1, characterized in that: The radio monitoring system consists of a high-gain receiving antenna and a host.

5. The multi-band interception jammer based on optical microwave according to claim 1, characterized in that: The interception and interference system is composed of a pulse drive source, a high-energy pulse cluster fiber laser, a photoconductive semiconductor switch and a radiation component; The pulse driving source provides a voltage of 3kv to 10kv for the photoconductive semiconductor switch to ensure that the photoconductive semiconductor switch can work normally; The pulse driving source provides voltage to the high-energy pulse cluster fiber laser to ensure that the high-energy pulse cluster fiber laser can operate normally; The high-energy pulse cluster fiber laser comprises a high-frequency modulation module and an optical power amplification module. The high-energy pulse cluster fiber laser outputs high-energy laser pulses with sub-pulse frequencies continuously tunable from 0.5 GHz to 10 GHz to a photoconductive semiconductor switch; The photoconductive semiconductor switch outputs a tunable microwave signal with a frequency of 0.5 GHz to 10 GHz consistent with the incident laser pulse parameters to the radiation component according to the voltage input by the pulse driving source and the laser pulse input by the high-energy pulse cluster fiber laser; The radiation component is used to transmit microwave signals to intercept and interfere with targets.

6. A multi-band interception jammer based on optical microwaves as claimed in claim 5, characterized in that: The high-frequency modulation module includes an electro-optical intensity modulator and its driving circuit, and an arbitrary signal generator; The arbitrary signal generator can output a high-frequency electrical signal of arbitrary waveform in the GHz range; The input end of the electro-optic intensity modulator is connected to the output end of the previous optical path, the arbitrary signal generator is connected to the input end of the electro-optic intensity modulator driving circuit by a coaxial signal line, and the output end of the electro-optic intensity modulator driving circuit is connected to the RF input end of the electro-optic intensity modulator by a coaxial signal line. The frequency of the arbitrary signal generator is adjusted to achieve continuous tuning of the sub-pulse frequency of the pulse cluster laser from 0.5 GHz to 10 GHz, thereby generating a 0.5 GHz to 10 GHz continuously tunable microwave signal.

7. The multi-band interception jammer based on optical microwave according to claim 1, characterized in that: The multi-band interception jammer based on optically guided microwaves can be loaded on a mobile platform.

8. The working method of a multi-band interception jammer based on optical microwave as claimed in claim 1, characterized in that: The following steps are involved: S1. The radar detection system detects the target, collects the target motion parameter information and sends the target motion parameter information to the optoelectronic tracking system; S2. The precision servo turntable and high-precision tracking module of the optoelectronic tracking system track the target according to the target motion parameter information provided by the radar detection system, and then use a high-definition camera to capture the image of the target in the airspace under the jurisdiction of the interceptor jammer, and match the image of the target in the airspace under the jurisdiction of the interceptor jammer with the aircraft database for feature matching, and cooperate with the infrared thermal imager to complete the target recognition; S3, the radio monitoring system monitors, receives and analyzes the flight control signal of the target, thereby obtaining the target's position information; The main control system determines whether the target is within the airspace under the jurisdiction of the intercept jammer according to the airspace under the jurisdiction set by the intercept jammer and the target's position information. When the target's position is within the airspace under the jurisdiction, the verification result is determined to be "true", and the main control system sends a control command to the intercept jammer system to start the intercept jammer system. When the target's position is not within the jurisdictional airspace, the verification result is determined to be "false", and the main control system determines that the target's position information is a false alarm and deletes the target from the radar detection system; S4. After receiving the control command, the interception and interference system emits microwave signals to interfere with the flight control signal of the target, causing the target to lose control and complete the target disposal.

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