Unmanned aerial vehicle interference system and method

Abstract

An unmanned aerial vehicle interference system disclosed by the present invention comprises a control module, and a reconnaissance module, an interference module and a holder which are connected with the control module, the reconnaissance module and the interference module are arranged on the holder, and the reconnaissance module is used for detecting a target area and transmitting a detection result to the control module; the control module is used for receiving a user instruction and a detection result of the investigation module, controlling rotation and pitching of the holder and sending an interference signal to the interference module; and the interference module is used for receiving the interference signal of the control module and emitting laser to perform optical interference on the unmanned aerial vehicle. The man-machine interference system has the advantages of being good in interference effect, low in cost, high in portability and free of damage to the unmanned aerial vehicle. The invention further discloses an unmanned aerial vehicle interference method.

Description

Technical Field

[0001] The present invention relates to the technical field of unmanned aerial vehicle jamming, and in particular to a system and method for jamming unmanned aerial vehicle. Background Art

[0002] With the development of information technology, drones have been widely used in various fields and have entered thousands of households in recent years. How to counter drone sneak shots at a very low cost without damaging the other party's drone, and without interfering with the normal flight of drones or damaging drones, etc., is a difficult problem that needs to be solved.

[0003] The Chinese patent document with publication number CN119063579A discloses a UAV jamming and laser attack system, which uses lasers to jam and counter UAVs. The applicant found that there are some shortcomings in this technical solution: There are some shortcomings in this technical solution:

[0004] 1) In this technical solution, the laser interference countermeasure uses high-energy lasers to ablate the rotating parts or control parts of the drone. The ablation time needs to last for more than 10 seconds. Once the drone performs rapid maneuvers, rotations, etc., the laser will not be able to aim at the same position of the drone for ablation, thus failing. The interference effect is poor, and laser ablation will damage the drone, causing property disputes;

[0005] 2) The high-energy laser equipment in this technical solution requires an energy storage system, which is large in size, consumes a lot of power, has a small beam divergence angle, and requires high tracking accuracy, resulting in excessively high equipment costs and the inability to be portable;

[0006] 3) The optoelectronic identification and tracking equipment (HD camera) in this technical solution uses visible light to detect drones. It cannot detect and identify drone targets at night or in low brightness.

[0007] 4) This technical solution uses radio and low-altitude radar to assist optoelectronic identification and tracking equipment in reconnaissance. Radio and low-altitude radar are active detection devices, which are expensive, poorly portable, and easy to be discovered and countered. Summary of the invention

[0008] The technical problem to be solved by the present invention is to overcome the deficiencies of the prior art, provide a drone jamming system with good jamming effect, low cost, strong portability and no damage to the drone, and also provide a drone jamming method.

[0009] In order to solve the above technical problems, the present invention adopts the following technical solutions:

[0010] A UAV jamming system includes a control module, a detection module, a jamming module and a pan-tilt platform connected to the control module, wherein the detection module and the jamming module are arranged on the pan-tilt platform.

[0011] A detection module is used to detect the target area and transmit the detection results to the control module;

[0012] The control module is used to receive user instructions and detection results of the detection module, control the rotation and pitch of the gimbal, and send interference signals to the interference module;

[0013] The jamming module is used to receive the jamming signal from the control module and emit laser to perform optical jamming on the drone.

[0014] As a further improvement of the above technical solution:

[0015] The laser is used to illuminate the drone's optical sensors.

[0016] The beam divergence angle of the laser is 1 mrad-10 mrad.

[0017] The interference module includes a white light laser and an infrared laser, wherein the white light laser is used to emit a laser with a wavelength of 400nm-700nm, and the infrared laser is used to emit a laser with a wavelength of 700nm-1400nm.

[0018] The detection module includes a low-light camera, and the low-light camera is used to photograph the target area.

[0019] The detection module also includes an identification unit and a tracking unit. The identification unit is used to identify the drone target in the image taken by the low-light camera, and the tracking unit is used to track the drone target identified by the identification unit and transmit the tracking information to the control module.

[0020] The UAV jamming system also includes a power supply module, which is used to supply power to the control module, the detection module, the jamming module and the gimbal.

[0021] A method for jamming a drone is provided, using the above-mentioned drone jamming system, and comprises the following steps:

[0022] Step S1: The reconnaissance module detects the target area and searches for the drone;

[0023] Step S2: the detection module identifies the drone target, the control module controls the rotation and pitch of the gimbal to aim at the drone target, and the detection module tracks the identified drone target;

[0024] Step S3: The user determines whether it is necessary to interfere with the identified drone target. If interference is required, step S4 is executed. If interference is not required, the process returns to step S2.

[0025] Step S4: The control module sends an interference signal to the interference module, and the interference module emits laser to perform optical interference on the drone until the detection module loses the drone target and returns to step S1.

[0026] As a further improvement of the above technical solution:

[0027] In step S2, the detection module identifies the drone target based on a low-latency network inference recognition method.

[0028] In step S2, in step S2, the reconnaissance module tracks the drone target based on the Falcon-eye long-term tracking algorithm.

[0029] Compared with the prior art, the advantages of the present invention are:

[0030] The UAV jamming system of the present invention can cause the UAV's shooting to be overexposed by adopting laser optical interference, thereby causing pixel failure or image distortion, making it impossible for the UAV to normally identify the target or judge the environment, thereby affecting the normal flight of the UAV, and the jamming effect is good; compared with laser ablation interference, laser optical interference has lower requirements on laser power, beam divergence angle, and tracking progress, etc., has low cost, smaller equipment size, strong portability, will not damage the UAV, and reduces property disputes.

[0031] In the drone jamming system of the present invention, laser is used to interfere with the optical sensor of the drone. When the laser acts on the optical sensor, a large number of free electrons will be generated, resulting in an increase in the photoelectric signal. If the light intensity is too large, the photoelectric signal will be overloaded, thereby causing pixel failure or image distortion, which can affect the drone's image capture, target recognition and flight control.

[0032] The UAV jamming system of the present invention adopts a wide-beam divergence laser, and the beam divergence angle of the laser is 1 mrad-10 mrad. The wide-beam divergence laser can expand the jamming range of the laser and achieve a better jamming effect.

[0033] The UAV jamming system of the present invention can interfere with the optical sensor of the UAV in a targeted manner by arranging a white light laser to emit visible light to interfere with the white light sensor of the UAV, and an infrared laser to emit infrared light to interfere with the infrared sensor of the UAV, thereby achieving a better jamming effect.

[0034] The UAV jamming system of the present invention shoots the target area by setting a low-light camera. The low-light camera can adapt to the light intensity and can detect UAV targets during the day and at night, and has strong adaptability. The low-light camera is a non-parallel detection system with low cost, strong portability, and strong concealment, making it difficult to be discovered.

[0035] The UAV interference method of the present invention can search, identify and track UAVs, and has strong detection capabilities; the laser optical interference method can cause the UAV's shooting to be overexposed, thereby causing pixel failure or image distortion, making it impossible for the UAV to normally identify the target or judge the environment, thereby affecting the normal flight of the UAV, and the interference effect is good; compared with laser ablation interference, laser optical interference has lower requirements on laser power, beam divergence angle, and tracking progress, etc., has low cost, smaller equipment size, strong portability, will not damage the UAV, and reduces property disputes. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] Figure 1 It is a structural schematic diagram of the UAV jamming system of the present invention.

[0037] Figure 2 It is a flow chart of the UAV interference method of the present invention. DETAILED DESCRIPTION

[0038] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0039] In the description of the present invention, it should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0040] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0041] In the present invention, unless otherwise clearly specified and limited, the terms "assemble", "connect", "connect", "fix" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0042] Embodiment 1:

[0043] like Figure 1 As shown, the UAV jamming system of this embodiment includes a control module, and a detection module, a jamming module and a gimbal connected to the control module. The detection module and the jamming module are arranged on the gimbal.

[0044] A detection module is used to detect the target area and transmit the detection results to the control module;

[0045] The control module is used to receive user instructions and detection results of the detection module, control the rotation and pitch of the gimbal, and send interference signals to the interference module;

[0046] The jamming module is used to receive the jamming signal from the control module and emit laser to perform optical jamming on the drone.

[0047] The UAV jamming system of this embodiment, when working, first, the reconnaissance module detects the target area and searches for the UAV; after the reconnaissance module identifies the UAV target, the control module controls the rotation and pitch of the gimbal to aim at the UAV target, and the reconnaissance module tracks the identified UAV target; the user determines whether it is necessary to interfere with the identified UAV target, if not, the reconnaissance module continues to track; if interference is required, the user sends a command to the control module, the control module sends an interference signal to the interference module, the interference module emits a laser to optically interfere with the UAV to interfere with the UAV shooting, until the reconnaissance module loses the UAV target, the reconnaissance module detects the target area, and searches for the UAV again. The UAV jamming system of this embodiment, by adopting the method of laser optical interference, can make the UAV shooting overexposed, thereby causing pixel failure or image distortion, making it impossible for the UAV to normally identify the target or judge the environment, thereby affecting the normal flight of the UAV, and the interference effect is good; compared with laser ablation interference, laser optical interference has lower requirements for laser power, beam divergence angle, and tracking progress, low cost, smaller equipment size, strong portability, and will not damage the UAV, reducing property disputes.

[0048] Furthermore, in this embodiment, the laser is used to interfere with the optical sensor of the drone. When the laser acts on the optical sensor, a large number of free electrons will be generated, resulting in an increase in the photoelectric signal. If the light intensity is too high, the photoelectric signal will be overloaded, causing pixel failure or image distortion, which can affect the drone's image capture, target recognition and flight control.

[0049] Furthermore, in this embodiment, the beam divergence angle of the laser is 1mrad-10mrad. Compared with the laser ablation interference, the laser optical interference in this embodiment adopts a wide beam divergence laser, and the beam divergence angle of the laser is 1mrad-10mrad. The wide beam divergence laser can expand the interference range of the laser and have a better interference effect.

[0050] Furthermore, in this embodiment, the interference module includes a white light laser and an infrared laser. The white light laser is used to emit a laser with a wavelength of 400nm-700nm, and the infrared laser is used to emit a laser with a wavelength of 700nm-1400nm. The optical sensor of the drone usually covers visible light, near infrared, short-wave infrared and other frequency bands. By setting the white light laser to emit visible light to interfere with the white light sensor of the drone, and the infrared laser to emit infrared light to interfere with the infrared sensor of the drone, the optical sensor of the drone can be interfered with in a targeted manner, and the interference effect is better. Of course, in other embodiments, ultraviolet lasers, blue lasers, infrared lasers and far-infrared lasers can also be used for interference.

[0051] Furthermore, in this embodiment, the detection module includes a low-light camera, which is used to photograph the target area. The low-light camera can adapt to the light intensity and can detect drone targets during the day and at night, with strong adaptability; the low-light camera is a non-edge detection, low cost, strong portability, and strong concealment, and is not easy to be discovered.

[0052] Furthermore, in this embodiment, the detection module also includes an identification unit and a tracking unit. The identification unit is used to identify the drone target in the image taken by the low-light camera, and the tracking unit is used to track the drone target identified by the identification unit and transmit the tracking information to the control module.

[0053] Furthermore, in this embodiment, the UAV jamming system also includes a power supply module, which is used to supply power to the control module, the detection module, the jamming module and the gimbal. Preferably, in this embodiment, the power supply module includes a battery and a power conversion unit, the battery is used to directly supply power to the detection module, the jamming module and the gimbal, and the power conversion unit is used to boost and stabilize the voltage of the battery before supplying power to the control module.

[0054] In this embodiment, the control module also includes a display control terminal, which is used to receive user instructions and display images taken by the low-light camera. The identification unit, the tracking unit and the control module are all connected to a WIFI switch signal, and the display control terminal is connected to the WIFI switch signal through a signal socket.

[0055] In this embodiment, the gimbal includes a conductive slip ring, a load platform, an azimuth integrated motor and a pitch integrated motor. The load platform is arranged on the conductive slip ring and is used to carry a laser (white light laser and infrared laser) and a low-light camera. The azimuth integrated motor is used to drive the load platform to rotate, and the pitch integrated motor is used to drive the load platform to pitch. The integrated motor integrates a motor, a driver, an angle measuring device, and a reducer. The system has a high degree of integration and is light in weight.

[0056] The UAV jamming system of this embodiment includes multiple modes. Circular scanning search mode: According to the pitch angle and azimuth search speed set by the user, the system searches for UAV targets through rapid and continuous circumferential scanning, thereby realizing multi-target search and detection functions. Area search mode: The system presets a certain search angle range to realize rapid and automatic search for targets in a designated airspace, thereby realizing multi-target search and detection functions. Guidance and pointing mode: Under the guidance of external prior information, the system directly turns to a specific airspace to detect targets. Tracking mode: The UAV target is automatically tracked, and the control module outputs the miss distance of the target from the center of the field of view in real time, and controls the gimbal azimuth and pitch drive unit to point and aim at the UAV target according to the miss distance information. After stable tracking, a strong laser is turned on for shooting countermeasures. Service and maintenance mode: The equipment parameters can be set and maintenance operations can be performed according to user control instructions.

[0057] Embodiment 2:

[0058] like Figure 2 As shown, the drone jamming method of this embodiment is performed using the drone jamming system of Embodiment 1, and includes the following steps:

[0059] Step S1: The reconnaissance module detects the target area and searches for the drone;

[0060] Step S2: the detection module identifies the drone target, the control module controls the rotation and pitch of the gimbal to aim at the drone target, and the detection module tracks the identified drone target;

[0061] Step S3: The user determines whether it is necessary to interfere with the identified drone target. If interference is required, step S4 is executed. If interference is not required, the process returns to step S2.

[0062] Step S4: The control module sends an interference signal to the interference module, and the interference module emits laser to perform optical interference on the drone until the detection module loses the drone target and returns to step S1.

[0063] The UAV interference method of this embodiment can search, identify and track UAVs, and has strong detection capabilities; the laser optical interference method can cause the UAV's shooting to be overexposed, thereby causing pixel failure or image distortion, making it impossible for the UAV to normally identify the target or judge the environment, thereby affecting the normal flight of the UAV, and the interference effect is good; compared with laser ablation interference, laser optical interference has lower requirements on laser power, beam divergence angle, and tracking progress, etc., has low cost, smaller equipment size, strong portability, and will not damage the UAV, thereby reducing property disputes.

[0064] In this embodiment, in step S2, the reconnaissance module identifies the drone target based on a low-latency network inference recognition method.

[0065] In this embodiment, in step S2, the reconnaissance module tracks the drone target based on the Falcon-eye long-term tracking algorithm.

[0066] In this embodiment, the reconnaissance module adopts two network frameworks: drone target recognition and drone target tracking. The low-latency network reasoning recognition method is integrated with the Falcon-eye long-term tracking algorithm to identify and track the target. Its core working logic is: 1. Use the recognition network to trigger the tracking network. When the recognition network recognizes a trusted target, it quickly switches to the tracking network to lock the target and subsequently accurately track it, predict the track, etc. When the drone target is lost from the field of view, the tracking stops to prevent mistracking. At this time, the recognition network is reactivated to search for suspected targets in the field of view; 2. Manually select the target in the field of view The object is detected and the tracking network is activated to lock the drone target and subsequently accurately track it, predict its trajectory, etc. When the drone target is lost from the field of view, the tracking stops to prevent mistracking; 3. The Falcon-eye long-term tracking algorithm is used again, which has powerful anti-loss and re-capture functions, and does not impose any restrictions on the drone target category, so that all kinds of drones can be tracked. The long-term tracker will perform in-depth feature extraction on the drone target during the tracking process. When the drone target disappears and re-enters the field of view, it has a persistent and controllable re-capture capability, which makes up for the defect that the recognition algorithm can only re-capture targets of specific categories.

[0067] When the image captured by the low-light camera is input into the recognition unit and the tracking unit, the two networks of drone target recognition and drone target tracking are switched in time, and the two networks activate and schedule each other, saving computing resources and the power consumption of the network always running in the foreground. Among them, the target recognition network is based on the new hardware architecture platform of Ascend310B, and calls the powerful hardware vision preprocessing core (Vision Preprocessing Core) to quickly complete image processing operations such as cutout, scaling, overlay, splicing, histogram statistics, color remapping, format conversion, Remap transformation, filtering, etc. (the maximum resolution supports 8192*8192, and the maximum processing time of a single operation at the maximum resolution is 5ms), greatly reducing the time consumption of the preprocessing stage (the actual measurement of 1080P simultaneous cutout, scaling, filling and format conversion takes only 3ms). The preprocessed data is sent to the memory buffer of the NPU for subsequent reasoning. For the network reasoning part, this solution performs special optimization of the training framework and underlying scheduling at the training layer and scheduling layer. The reasoning time is reduced by 20% compared with the unoptimized one. The target recognition model takes the following time (small model: 3-4ms, medium model: 7-8ms, large model: 12-13ms). The small model of this tracker recognition algorithm has 3 times the number of parameters of the mainstream model used in HiSilicon 3599 / 3403, and the reasoning time is only 50% of that, which has a huge advantage in reasoning speed. After the reasoning is completed, it is output in two forms. Users can choose to directly transmit the reasoning results to the backend according to the needs of the backend platform, that is, the coordinates of the center point of the identified drone target and the coordinate sequence of the identification box range (not time-consuming), or the system can superimpose the reasoning results into the video stream encoding output (1ms)

[0068] The above is only a preferred embodiment of the present invention and does not limit the present invention in any form. Although the present invention has been disclosed as above in the preferred embodiment, it is not used to limit the present invention. Any technician familiar with the art can make many possible changes and modifications to the technical solution of the present invention by using the methods and technical contents disclosed above without departing from the spirit and technical solution of the present invention, or modify it into an equivalent embodiment of equivalent changes. Therefore, any simple modification, equivalent replacement, equivalent change and modification made to the above embodiments according to the technical essence of the present invention without departing from the content of the technical solution of the present invention, still fall within the scope of protection of the technical solution of the present invention.

Claims

1. A UAV jamming system, characterized by: It includes a control module, and a detection module, an interference module and a pan-tilt platform connected to the control module. The detection module and the interference module are arranged on the pan-tilt platform. A detection module is used to detect the target area and transmit the detection results to the control module; The control module is used to receive user instructions and detection results of the detection module, control the rotation and pitch of the gimbal, and send interference signals to the interference module; The jamming module is used to receive the jamming signal from the control module and emit laser to perform optical jamming on the drone.

2. The UAV jamming system according to claim 1, characterized in that: The laser is used to illuminate the drone's optical sensors.

3. The UAV jamming system according to claim 1, characterized in that: The beam divergence angle of the laser is 1 mrad-10 mrad.

4. The UAV jamming system according to claim 1, characterized in that: The interference module includes a white light laser and an infrared laser, wherein the white light laser is used to emit a laser with a wavelength of 400nm-700nm, and the infrared laser is used to emit a laser with a wavelength of 700nm-1400nm.

5. The UAV jamming system according to claim 1, characterized in that: The detection module includes a low-light camera, and the low-light camera is used to photograph the target area.

6. The UAV jamming system according to claim 5, characterized in that: The detection module also includes an identification unit and a tracking unit. The identification unit is used to identify the drone target in the image taken by the low-light camera, and the tracking unit is used to track the drone target identified by the identification unit and transmit the tracking information to the control module.

7. The UAV jamming system according to claim 1, characterized in that: The UAV jamming system also includes a power supply module, which is used to supply power to the control module, the detection module, the jamming module and the gimbal.

8. A method for jamming a drone, characterized in that: The method is carried out using the UAV jamming system according to any one of claims 1 to 7, comprising the following steps: Step S1: The reconnaissance module detects the target area and searches for the drone; Step S2: the detection module identifies the drone target, the control module controls the rotation and pitch of the gimbal to aim at the drone target, and the detection module tracks the identified drone target; Step S3: The user determines whether it is necessary to interfere with the identified drone target. If interference is required, step S4 is executed. If interference is not required, the process returns to step S2. Step S4: The control module sends an interference signal to the interference module, and the interference module emits laser to perform optical interference on the drone until the detection module loses the drone target and returns to step S1.

9. The UAV jamming method according to claim 8, characterized in that: In step S2, the detection module identifies the drone target based on a low-latency network inference recognition method.

10. The UAV jamming method according to claim 8, characterized in that: In step S2, in step S2, the reconnaissance module tracks the drone target based on the Falcon-eye long-term tracking algorithm.

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