A low-altitude defense device capable of remote spectrum feature upgrade

Abstract

The present invention relates to the field of communication interference technology. The present invention provides a low-altitude defense device with remote spectrum feature upgradeability, comprising a server, a spectrum monitoring module, an evaluation module, a remote upgrade module, a threat disposal module, and a control and decision module. The spectrum monitoring module is used to scan the radio spectrum in a low-altitude area in real time and extract characteristic parameters. The evaluation module evaluates the characteristic parameters with status parameters of known threat signals in a remote server and other defense equipment to form an evaluation result. The remote upgrade module triggers the establishment of a communication connection with the remote server and other defense equipment based on the evaluation result, and receives and shares the latest spectrum feature library update. The control and decision module analyzes the decision strategy of the threat disposal module's disposal operation based on the evaluation result. The threat disposal module transmits an interference signal to block or disrupt the communication and control of the threat target based on the decision strategy of the control and decision module.

Description

Technical Field

[0001] The present invention relates to the field of communication jamming technology, and in particular to a low-altitude defense device capable of remotely upgrading spectrum characteristics. Background Art

[0002] As drone manufacturing costs continue to decline and performance continues to improve, they are gradually moving from military and high-end commercial applications to the mass market. As a flying vehicle, drones can be used by different people for different purposes. Their use should not be unrestricted, nor should they be completely banned simply because they could potentially facilitate crime. While drones are beneficial for various outdoor operations, from the perspective of counterterrorism and crime, they can become extremely dangerous aerial weapons, making them difficult to defend against.

[0003] For example, the low-altitude defense equipment disclosed in Chinese patent CN106452658B uses photoelectric detection, target tracking, and radio frequency interference as its core. The entire device adopts a modular design, and the detection and interference parts can be deployed and work independently. However, it lacks flexibility and coordination capabilities, resulting in the defense device being slow to respond or even unable to identify new drone threats.

[0004] In the prior art, existing defense devices still face the following major problems:

[0005] 1. Existing low-altitude defense systems typically rely on pre-defined spectral signature libraries. These libraries contain known spectral signature data for drones. However, with the continuous advancement of drone technology, the spectral signatures of new drones are constantly changing and diversifying, making fixed signature libraries difficult to update in real time.

[0006] 2. Updating the spectrum signature library typically requires manual operation or regular maintenance, which is both time-consuming and labor-intensive in practice. Furthermore, due to the long update cycle, when new drone threats emerge, existing defense systems may not be able to obtain the latest spectrum signature data in a timely manner, affecting their effectiveness.

[0007] 3. Each low-altitude defense system typically operates independently, making it difficult to share and synchronize spectrum signature data. Consequently, even if one defense system identifies and updates the spectrum signature data of a new drone, other defense systems may not be able to obtain this information in a timely manner, hindering rapid system response and coordinated defense.

[0008] The present invention is made in order to solve the common problems in this field, such as the inability to perform remote upgrades, poor defense effects, weak defense assessment capabilities, low intelligence, poor collaborative defense capabilities, and slow response speed. Summary of the Invention

[0009] The purpose of the present invention is to address the current deficiencies and propose a low-altitude defense device with remote spectrum feature upgrades.

[0010] In order to overcome the deficiencies of the prior art, the present invention adopts the following technical solutions:

[0011] A low-altitude defense device capable of remote spectrum feature upgrade, the low-altitude defense device comprising a server, the low-altitude defense device further comprising a spectrum monitoring module, an assessment module, a remote upgrade module, a threat handling module, and a control and decision-making module, the server being connected to the spectrum monitoring module, the assessment module, the remote upgrade module, the threat handling module, and the control and decision-making module respectively;

[0012] The spectrum monitoring module is used to scan the radio spectrum in the low-altitude area in real time and extract characteristic parameters. The evaluation module evaluates the characteristic parameters with the status parameters of known threat signals in the remote server and other defense equipment to form an evaluation result. The remote upgrade module triggers the establishment of a communication connection with the remote server and other defense equipment based on the evaluation result, and receives and shares the latest spectrum feature library updates. The control and decision module analyzes the decision strategy of the threat disposal module's disposal operation based on the evaluation result. The threat disposal module transmits an interference signal to block or disrupt the communication and control of the threat target based on the decision strategy of the control and decision module.

[0013] Among them, the threat handling module includes an interference transmission unit, a guidance unit and a capture unit. The interference transmission unit interferes with the threat target in the low-altitude area, the guidance unit guides the threat target that establishes interference communication so that the threat target enters the capture range, and the capture unit captures the threat target that enters the capture range.

[0014] Optionally, the jamming transmission unit includes a spectrum analyzer, an jamming signal generator, a high-frequency amplifier, and a directional antenna array. The spectrum analyzer monitors and analyzes the radio spectrum in the low-altitude area in real time, identifies and locks the communication frequency of the threatening target. The jamming signal generator generates an jamming signal with adjustable frequency and intensity to cover the communication frequency band of the threatening target. The high-frequency amplifier amplifies the power of the jamming signal to ensure its effective coverage within the target communication frequency band. The directional antenna array is used to transmit the jamming signal in a directionally controlled manner.

[0015] Wherein, the interference transmitting unit is arranged in a low-altitude area to be monitored.

[0016] Optionally, the guidance unit includes a guidance antenna, a guidance signal generator, and a signal controller, wherein the guidance antenna transmits a guidance signal and performs directional control on the threat target, the guidance signal generator generates a false navigation or control signal for guiding the threat target, and the signal controller controls the transmission power of the guidance signal;

[0017] Among them, the false navigation or control signal that guides the threat target is generated according to the planned guidance path.

[0018] Optionally, the capture unit includes a positioning identification component, a capture trigger component and a physical capture component. The positioning identification component identifies and locates the threat target to form position data of the threat target. The physical capture component physically captures the threat target according to the position data. The capture trigger component triggers the physical capture component to capture the threat target according to the decision strategy of the control and decision module.

[0019] Optionally, the spectrum monitoring module includes a multi-band antenna array, a spectrum analyzer and a data storage device, wherein the multi-band antenna array receives radio signals of different frequency bands in the low-altitude area, the spectrum analyzer analyzes the received radio signals and extracts spectrum characteristic parameters, and the data storage device stores the spectrum characteristic parameters of the radio signals.

[0020] Optionally, the evaluation module obtains the spectrum characteristic parameters and the state parameters of the known threat signals stored in the database, and calculates the similarity index SSI according to the following formula:

[0021]

[0022] Where S i is the similarity between the i-th characteristic parameter and the i-th characteristic parameter of the known threat signal in the database, ω i is the weight of the i-th feature, and its value is determined according to the historical state parameters of the known threat signal;

[0023] If the similarity index SSI exceeds or is equal to the monitoring threshold Worn set by the system, the device corresponding to the radio spectrum will be listed as a threat target, and the decision on the disposal operation of the threat disposal module will be triggered, as well as the establishment of a communication connection with the remote server and other defense equipment to receive and share the latest spectrum feature library updates.

[0024] Optionally, the remote upgrade module includes a communication interface unit and a local threat library. The communication interface unit establishes a communication connection with a remote server and other defense equipment, and transmits spectrum characteristics for sharing. The local threat library stores received or shared spectrum characteristic data.

[0025] Optionally, the control and decision module includes a decision analysis unit and a decision execution unit, wherein the decision analysis unit determines a decision strategy for the handling operation of the threat handling module according to the evaluation result, and the decision execution unit controls the handling operation of the threat handling module according to the decision strategy;

[0026] The decision analysis unit obtains the similarity index SSI, the environmental conditions of the low-altitude area to be monitored, and the threat score of the threat target, and calculates a decision score DS;

[0027] The decision analysis unit determines the decision strategy through the decision score DS.

[0028] Optionally, the interference transmitting unit interferes with the threat target according to the following steps:

[0029] S1. Spectrum analyzer scans the radio spectrum in low-altitude areas to detect and identify the communication frequencies of threat targets;

[0030] S2. The interference signal generator generates a corresponding interference signal according to the identified communication frequency;

[0031] S3, the high-frequency amplifier amplifies the power of the interference signal to ensure that it can cover the communication frequency band of the threatening target;

[0032] S4. Through the directional antenna array, the jamming signal is accurately transmitted to the area where the threat target is located, blocking its communication.

[0033] Optionally, the decision execution unit transmits the decision strategy to the capture trigger component and performs a capture operation on the threat target.

[0034] The beneficial effects achieved by the present invention are:

[0035] 1. Through the mutual cooperation between the spectrum monitoring module and the evaluation module, the spectrum characteristics of the threat target can be collected and evaluated, ensuring that the entire system has the advantages of good defense effect, high threat identification reliability, strong defense evaluation capability, good coordinated defense capability and high intelligence;

[0036] 2. Through the mutual cooperation between the remote upgrade module and the evaluation module, the spectrum characteristics of the threat target can be shared, improving the joint defense capability against the threat target, ensuring that the entire device has the advantages of strong collaborative defense capability, fast response speed, high intelligence, reliable defense evaluation capability and good defense effect;

[0037] 3. Through the mutual coordination between the control and decision-making module and the threat disposal module, threat targets can be captured and defended, ensuring that the entire device has the advantages of high defense reliability, rapid decision-making, strong decision-making and evaluation capabilities, and high intelligence;

[0038] 4. Through the mutual cooperation between the jamming emission unit, the guidance unit and the capture unit, the threat target can be guided, interfered and captured, ensuring that the entire device has the advantages of strong low-altitude defense capability, good defense effect and high reliability of threat target protection and capture. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] The present invention can be further understood from the following description in conjunction with the accompanying drawings. The components in the figures are not necessarily drawn to scale, but rather the emphasis is placed on illustrating the principles of the embodiments. In different views, the same reference numerals designate the same parts.

[0040] Figure 1 It is an overall block diagram of the present invention.

[0041] Figure 2 FIG. 4 is a block diagram of a threat handling module according to the present invention.

[0042] Figure 3 It is a flow chart of the spectrum monitoring module and the evaluation module of the present invention.

[0043] Figure 4 This is a block diagram of the capture unit of the present invention capturing a threat target.

[0044] Figure 5 It is a side view schematic diagram of the present invention.

[0045] Figure 6 It is a schematic top view of the present invention.

[0046] Figure 7 It is a side view schematic diagram of the capture unit of the present invention.

[0047] Figure 8 Schematic top view of the capture unit of the present invention.

[0048] Figure 9 for Figure 8 Schematic cross-sectional view at AA in the middle.

[0049] Figure 10 for Figure 9 Enlarged schematic diagram of point B in the middle.

[0050] Figure 11 for Figure 9 Enlarged schematic diagram of point C in the middle.

[0051] Figure 12 Schematic diagram of an application scenario in which a capture net launched by a capture unit of the present invention captures a threat target.

[0052] Figure 13 Schematic diagram of the capture net of the present invention when it is unfolded.

[0053] Explanation of the accompanying symbols: 1. Spectrum monitoring module; 2. Guidance unit; 3. Capture unit; 4. Multi-band antenna array; 5. Radar; 6. High-resolution camera; 7. Launcher; 8. Ejection mechanism; 9. Pitch seat; 10. Stand; 11. Fixed seat; 12. Steering seat; 13. Launch net; 14. Pitch adjustment gear; 15. Drive rod; 16. Pitch monitoring probe; 17. Pitch adjustment drive mechanism; 18. Connecting rod; 19. Positioning probe; 20. Positioning marker; 21. Steering gear; 22. Steering drive mechanism; 23. Speed ​​reduction unit; 24. Protection unit; 25. Magnetic suction unit; 26. Speed ​​reduction parachute; 27. Anti-collision airbag; 28. Mobile platform; 29. ​​Infrared camera; 30. Following radar. DETAILED DESCRIPTION

[0054] The following is an explanation of the embodiments of the present invention through specific embodiments. Those skilled in the art can understand the advantages and effects of the present invention from the contents disclosed in this specification. The present invention can be implemented or applied through other different specific embodiments, and the details in this specification can also be modified and changed in various ways based on different viewpoints and applications without departing from the spirit of the present invention. In addition, the drawings of the present invention are only simple schematic illustrations and are not depicted in actual size. It is stated in advance. The following embodiments will further explain the relevant technical content of the present invention in detail, but the disclosed content is not intended to limit the scope of protection of the present invention.

[0055] Example 1: According to Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 、 Figure 5 、 Figure 6 、 Figure 7 、 Figure 8 、 Figure 9 、 Figure 10 、 Figure 11 、 Figure 12 and Figure 13 As shown, this embodiment provides a low-altitude defense device capable of remote spectrum feature upgrade, the low-altitude defense device comprising a server, the low-altitude defense device further comprising a spectrum monitoring module 1, an evaluation module, a remote upgrade module, a threat handling module, and a control and decision module, the server being connected to the spectrum monitoring module 1, the evaluation module, the remote upgrade module, the threat handling module, and the control and decision module, respectively, and storing intermediate data and process data of the spectrum monitoring module 1, the evaluation module, the remote upgrade module, the threat handling module, and the control and decision module in a database;

[0056] In this embodiment, the spectrum monitoring module 1, the evaluation module, the remote upgrade module, the threat handling module, and the control and decision module are provided on a mobile platform 28, which includes but is not limited to a vehicle, a ship, and a drone;

[0057] The spectrum monitoring module 1 is used to scan the radio spectrum in the low-altitude area in real time and extract characteristic parameters. The evaluation module evaluates the characteristic parameters with the status parameters of known threat signals in the remote server and other defense equipment to form an evaluation result. The remote upgrade module triggers the establishment of a communication connection with the remote server and other defense equipment based on the evaluation result, and receives and shares the latest spectrum feature library updates. The control and decision module analyzes the decision strategy of the threat disposal module's disposal operation based on the evaluation result. The threat disposal module transmits an interference signal to block or disrupt the communication and control of the threat target based on the decision strategy of the control and decision module.

[0058] The low-altitude defense device also includes a central processing unit, which controls and connects the spectrum monitoring module 1, the evaluation module, the remote upgrade module, the threat disposal module, and the control and decision-making module, and performs centralized control based on the spectrum monitoring module 1, the evaluation module, the remote upgrade module, the threat disposal module, and the control and decision-making module, and stores the control data of the central processing unit in a database, thereby improving the defense capability and defense reliability of the entire device against threat targets;

[0059] The threat handling module includes an interference transmitting unit, a guiding unit 2 and a capture unit 3. The interference transmitting unit interferes with the threat target in the low-altitude area. The guiding unit 2 guides the threat target that establishes interference communication so that the threat target enters the capture range. The capture unit 3 captures the threat target that enters the capture range.

[0060] Optionally, the jamming transmission unit includes a spectrum analyzer, an jamming signal generator, a high-frequency amplifier, and a directional antenna array. The spectrum analyzer monitors and analyzes the radio spectrum in the low-altitude area in real time, identifies and locks the communication frequency of the threatening target. The jamming signal generator generates an jamming signal with adjustable frequency and intensity to cover the communication frequency band of the threatening target. The high-frequency amplifier amplifies the power of the jamming signal to ensure its effective coverage within the target communication frequency band. The directional antenna array is used to transmit the jamming signal in a directionally controlled manner.

[0061] Wherein, the interference transmitting unit is set in the low-altitude area to be monitored;

[0062] Optionally, the interference transmitting unit interferes with the threat target according to the following steps:

[0063] S1. Spectrum analyzer scans the radio spectrum in low-altitude areas to detect and identify the communication frequencies of threat targets;

[0064] S2. The interference signal generator generates a corresponding interference signal according to the identified communication frequency;

[0065] S3, the high-frequency amplifier amplifies the power of the interference signal to ensure that it can cover the communication frequency band of the threatening target;

[0066] S4, through the directional antenna array, accurately transmits the jamming signal to the area where the threat target is located, blocking its communication;

[0067] Optionally, the guidance unit 2 includes a guidance antenna, a guidance signal generator, and a signal controller. The guidance antenna transmits a guidance signal and performs directional control on the threat target. The guidance signal generator generates a false navigation or control signal for guiding the threat target. The signal controller controls the transmission power of the guidance signal.

[0068] Among them, the false navigation or control signal for guiding the threat target is generated according to the planned guidance path;

[0069] The guiding unit 2 guides the threat target according to the following steps:

[0070] S21, target identification: detecting the position and movement trajectory of the threat target through radar 5 or optical sensors;

[0071] Get the target's real-time location data (x, y, z);

[0072] Target positioning: Use high-precision positioning systems (such as GPS and RTK) to determine the precise location of the threat target;

[0073] a signal controller for transmitting position data to the guidance unit 2;

[0074] S22. Planning the guidance path:

[0075] Path planning: Plan the guidance path P based on the defense strategy and environmental conditions;

[0076] The guidance path consists of multiple coordinate points P = {(x1, y1, z1), (x2, y2, z2), ..., (x n ,y n ,z n )}composition;

[0077] Path calculation: Calculate the moving direction and distance of the threat target from the current point (x0, y0, z0) to the next point (x1, y1, z1);

[0078] Determine the transmission direction and power of the guidance signal;

[0079] S23. Generate a guidance signal:

[0080] Signal modulation: The guidance signal generator generates false navigation or control signals according to the guidance path;

[0081] Modulation signal parameters such as frequency, amplitude, and phase;

[0082] Signal synthesis: synthesize signals of multiple frequency bands and modulation modes to ensure interference effect;

[0083] S24. Transmitting guidance signal:

[0084] Directional emission: The guidance antenna is aimed at the threat target and the guidance signal is emitted;

[0085] The signal controller adjusts the transmission power to ensure that the signal covers the threat target;

[0086] Real-time adjustment: Dynamically adjust the direction and power of the guidance signal based on the real-time position and movement status of the threat target;

[0087] S25, control the guidance path

[0088] Monitoring feedback: monitor the response of threat targets and obtain their real-time location through sensors;

[0089] Confirm whether the target moves according to the guidance path;

[0090] Adjust guidance: If the target deviates from the guidance path, recalculate the parameters of the guidance signal;

[0091] adjusting the output of the guidance signal generator and retransmitting the adjusted guidance signal;

[0092] Optionally, the capture unit 3 includes a positioning identification component and a physical capture component, wherein the positioning identification component identifies and locates the threat target to form position data of the threat target, the physical capture component physically captures the threat target according to the position data, and the capture triggering component triggers the physical capture component to capture the threat target according to the decision strategy of the control and decision module;

[0093] The positioning and identification component includes a radar transmitter, a radar receiver, an antenna array, a high-resolution camera 6, an infrared camera 29, and a data fusion subunit. The radar transmitter generates and transmits electromagnetic waves to the threat target. The radar receiver receives the electromagnetic waves reflected from the threat target to measure the distance r, azimuth angle θ, and pitch angle φ of the threat target. The antenna array is used to transmit and receive electromagnetic waves. The high-resolution camera 6 captures images of the threat target. The infrared camera 29 captures infrared images for target identification in low-light environments. The data fusion subunit fuses the radar data and image data.

[0094] The data fusion subunit fuses radar data and image data according to the following steps to determine the location of the threat target:

[0095] S11. Establishment of coordinate system:

[0096] In this system, a global coordinate system is used to uniformly process and analyze all data; a three-dimensional coordinate system is established with the position of the mobile platform 28 (Ground Station) as the origin;

[0097] Origin (O): the position of the mobile platform 28, assumed to be (0,0,0);

[0098] X axis: along the east-west direction;

[0099] Y axis: along the north-south direction;

[0100] Z axis: vertically upward (height);

[0101] S12, the radar measures the distance r, azimuth angle θ and pitch angle φ of the threat target by transmitting electromagnetic waves and receiving reflected signals;

[0102] The high-resolution camera 6 and the infrared camera 29 capture the image of the threat target, and use the image processing algorithm to extract the three-dimensional position (x camera ,y camera ,z camera ); wherein, the image processing algorithm for calculating the three-dimensional position of the threat target is a technical means well known to those skilled in the art, and thus will not be described in detail in this embodiment;

[0103] In this embodiment, a specific method for determining the three-dimensional position of a threat target is provided. Specifically, a camera (taking a monocular camera as an example) can only capture two-dimensional images. In order to determine the three-dimensional coordinates, some additional information and steps are required, such as the camera installation location and the known size of the target.

[0104] Establishment of coordinate system:

[0105] World Coordinate System: With the mobile platform as the origin, the X-axis is along the east-west direction, the Y-axis is along the north-south direction, and the Z-axis is vertically upward (height);

[0106] Camera Coordinate System: The camera's position is the origin, the camera's optical axis is the Z axis, the horizontal rightward direction is the X axis, and the vertical downward direction is the Y axis;

[0107] 1) Data collection:

[0108] Image Capture:

[0109] Use high-resolution cameras to capture visible light images of threat targets;

[0110] Use infrared cameras to capture infrared images of threat targets in low-light or nighttime conditions;

[0111] 2) Image preprocessing

[0112] Denoising: Use median filtering to remove noise from the image;

[0113] Grayscale: Convert a color image to a grayscale image;

[0114] Edge detection: Use the Sobel operator to detect the edge of the target;

[0115] Determine the 2D position of a target:

[0116] Object Detection and Recognition:

[0117] Template matching: matches a pre-stored target template with the processed image to find the best matching position; shape detection: uses algorithms such as Hough transform to detect specific shapes (such as circles or rectangles) to identify targets;

[0118] Assume that the two-dimensional position in the image is (u,v);

[0119] Calculation of three-dimensional coordinates:

[0120] In order to extrapolate from 2D image coordinates to 3D world coordinates, the following information is required:

[0121] Internal parameters of the camera: focal length f, principal point (optical center) (c x ,c y );

[0122] Camera's external parameters: the camera's position and orientation in the world coordinate system;

[0123] The actual size of the target: such as the actual height H of the target;

[0124] Calculate depth (distance):

[0125] Calculate the depth Z of the object using the known size of the object and the size in the image;

[0126] Assuming that the height of the target in the image is h pixels, the depth Z of the target is calculated as:

[0127]

[0128] Calculate world coordinates:

[0129] Convert image coordinates (u, v) to camera coordinates (x c ,y c ,z c ):

[0130]

[0131] To transform the camera coordinate system to the world coordinate system, the camera's rotation matrix R and translation vector T are required:

[0132]

[0133] For a fixed camera, the rotation matrix R and translation vector T are known and fixed and can be calibrated in advance. For a mobile camera, the rotation matrix R and translation vector T need to be calculated in real time. A posture sensor (such as an IMU) can be used to obtain the camera's orientation and position.

[0134] In summary, through the above steps, the points in the camera coordinate system can be accurately converted to the world coordinate system, thereby determining the three-dimensional position of the threat target;

[0135] S13, converting the radar measurement data into three-dimensional coordinates in a global coordinate system;

[0136]

[0137] Where r is the distance of the threat target, θ is the azimuth of the threat target, and φ is the pitch angle of the threat target;

[0138] In this embodiment, since the camera is installed on a mobile platform and its position and orientation are known, the three-dimensional position data in the global coordinate system can be directly obtained;

[0139] S14. Data Fusion:

[0140] In this embodiment, the radar data and the optical camera data are fused using a weighted average method; the weights of the radar data and the optical camera data set by the system are w and w respectively. radar and wcamera , and satisfy w radar +w camera =1;

[0141] Among them, the three-dimensional position coordinates of the fused target (x fused ,y fused ,z fused ) is calculated according to the following formula:

[0142]

[0143] At the same time, in this embodiment, 1) the specific weights are determined based on the accuracy of the radar and the optical camera, and the relationship between the weights satisfies: w radar +w camera =1;

[0144] For example, the measurement accuracy of radar and optical camera systems is as follows:

[0145] Radar accuracy: 90%;

[0146] Optical camera accuracy: 70%;

[0147] Weights can be assigned according to the accuracy ratio:

[0148]

[0149] 2) Using fixed scene weights:

[0150] In nighttime environments, the weight of optical camera systems may need to be reduced due to their poor performance in low-light conditions;

[0151] Night environment:

[0152] Radar weight: 0.7;

[0153] Optical camera weight: 0.3;

[0154] Daytime environment:

[0155] Radar weight: 0.5;

[0156] Optical camera weight: 0.5;

[0157] The above examples of weight values ​​are only provided as an example. Those skilled in the art can obtain appropriate and specific weights according to actual conditions and input them through the human-computer interaction interface. They can also refer to the above weight setting methods to determine values. Therefore, they will not be described in detail in this embodiment.

[0158] S15. Generate location data:

[0159] Based on the weighted average calculation results, the precise position coordinates of the threat target are generated and transmitted to the control and decision module and the capture trigger component;

[0160] The physical capture component includes a capture net, a launcher 7, a trigger, a deceleration parachute 26, an anti-collision airbag 27, an inflation pump and an anti-collision pop-up device. The capture net is used to physically capture the threat target. The launcher 7 ejects the capture net and covers the threat target with the capture net. The deceleration parachute 26 is arranged in the trigger to form a deceleration part 23. The deceleration part 23 is arranged on the capture net. The trigger controls the deceleration parachute 26 to pop out according to the rate of change of the descending speed to decelerate the capture net covering the threat target. The anti-collision airbag 27 and the inflation pump are connected to form a protective part 24. The protective part 24 is arranged in the anti-collision pop-up device. The anti-collision pop-up device controls the triggering timing of the protective part 24 and, after being triggered, triggers the inflation pump to inflate the anti-collision airbag 27. The anti-collision pop-up device and the protective part 24 are arranged on the capture net.

[0161] In addition, a magnetic element 25 is provided at the edge of the capture net. When the two edges are close to each other, the threat target is gathered and wrapped under the action of magnetic attraction to form a capture net bag (such as Figure 12 shown);

[0162] At the same time (such as Figure 12 When the capture net is loaded into the launch tube, it is necessary to distinguish the forward and reverse directions of the capture net, wherein the forward direction is that the deceleration parachute 26 is above the capture direction of the capture net and the anti-collision airbag 27 is below the capture direction of the capture net;

[0163] like Figure 9 As shown, the launcher 7 includes a launch tube, an ejection mechanism 8, a solenoid valve, and a trigger button. The launch tube is used to store a tightly folded capture net. The trigger button is operated by an operator and is electrically connected to the solenoid valve. The solenoid valve controls the ejection mechanism 8. When the solenoid valve is triggered, the ejection mechanism 8 releases high-pressure gas to push the capture net out of the launch tube, causing the capture net to unfold into a flat shape.

[0164] The trigger includes a miniature speed sensor, a power supply battery, an electronic control valve, a placement cavity, and a microcontroller. The placement cavity is for placing the deceleration parachute 26. The electronic control valve is arranged in the placement cavity and controls the release of the deceleration parachute 26. The speed sensor collects the acceleration of the capture net, and the microcontroller calculates the descent speed change rate based on the acceleration data collected by the speed sensor.

[0165] The speed change rate is analyzed in real time and compared with a preset trigger threshold; if the speed change rate exceeds the threshold, it means that the capture net is descending too fast and the deceleration parachute 26 needs to be triggered;

[0166] Specifically, the trigger condition can be set as the speed change rate reaching or exceeding the set trigger threshold:

[0167]

[0168] Where dt / dv is the rate of change of velocity, satisfying: dt / dv = a, a is the acceleration, whose value is acquired by the velocity sensor;

[0169] When the triggering conditions are met, the microcontroller sends a signal to activate the solenoid valve, releasing high-pressure gas to eject the parachute;

[0170] The trigger threshold Threshold is set by the system according to actual conditions and input through the human-computer interaction interface. This is a technical means well known to those skilled in the art. Those skilled in the art can refer to relevant technical manuals to learn about this technology, so it will not be described in detail in this embodiment.

[0171] The anti-collision pop-up device includes a height sensor, a collision sensor (or a pressure sensor), a storage chamber, a control valve, a lithium battery, and a microprocessor. The height sensor is used to detect the height data of the anti-collision part from the ground. The collision sensor collects the collision force data between the capture net and the threatening target. The microprocessor analyzes the trigger condition according to the height data of the height sensor and the collision force (contact force) data of the collision sensor (or pressure sensor) to form an analysis result, and compares it with the set corresponding trigger threshold. If the trigger condition is met (any one of the above-mentioned trigger conditions is met), the control valve is triggered to operate. The storage chamber is used to place the protective part 24. The control valve is electrically connected to the inflation pump. If the trigger condition is met, the inflation pump is triggered to inflate the anti-collision airbag 27. The lithium battery is electrically connected to the height sensor, the collision sensor, the control valve and the inflation airbag, and provides power to the height sensor, the collision sensor and the control valve.

[0172] Wherein, the height sensor is hidden and arranged on the capture net, and the collision sensor is arranged on the contact end surface between the capture net and the threat target;

[0173] The microprocessor obtains data from the height sensor and the collision sensor and analyzes the trigger conditions using the following formula:

[0174] Height trigger conditions:

[0175] h≤Monitorh ;

[0176] Among them, h is the current height, and its value is collected by the height sensor. Monitor h It is the height threshold preset by the system;

[0177] Collision trigger conditions:

[0178] F≥Monitor F ;

[0179] Among them, F is the detected collision force, and its value is collected by the collision sensor or pressure sensor. F is the collision force threshold preset by the system;

[0180] In this embodiment, the system presets the height threshold Monitor h , and the system's preset collision force threshold Monitor F The system is set according to the actual situation of the entire device and inputted from the human-computer interaction interface. This is a technical means well known to those skilled in the art. Those skilled in the art can refer to relevant technical manuals to learn about this technology, so it will not be described in detail in this embodiment.

[0181] When the triggering condition is met, the microprocessor starts the air pump through the control valve and inflates the anti-collision airbag 27;

[0182] The anti-collision ejector can effectively monitor the height and collision situation of the capture net and the threat target, and trigger the inflation of the anti-collision airbag 27 when necessary, providing multi-level safety protection;

[0183] Among them, through the mutual cooperation between the jamming emission unit, the guidance unit 2 and the capture unit 3, the threat target can be guided, interfered with and captured, ensuring that the entire device has the advantages of strong low-altitude defense capability, good defense effect, and high reliability of threat target protection and capture;

[0184] Optionally, the spectrum monitoring module 1 includes a multi-band antenna array 4, a spectrum analyzer and a data storage device, wherein the multi-band antenna array 4 receives radio signals of different frequency bands in the low-altitude area, the spectrum analyzer analyzes the received radio signals and extracts spectrum characteristic parameters, and the data storage device stores the spectrum characteristic parameters of the radio signals;

[0185] The spectrum characteristic parameters include frequency, bandwidth, signal strength, and modulation type.

[0186] Optionally, the evaluation module obtains the spectrum characteristic parameters and the state parameters of the known threat signals stored in the database, and calculates the similarity index SSI according to the following formula:

[0187]

[0188] Where S i is the similarity between the i-th characteristic parameter of the threat signal and the i-th characteristic parameter of the known threat signal in the database, ω i is the weight of the i-th feature, and its value is determined according to the historical state parameters of the known threat signal;

[0189] The similarity S between the i-th feature parameter and the i-th feature parameter of the known threat signal in the database i Calculate according to the following formula:

[0190]

[0191] Where x i Represents the i-th characteristic parameter of the threat target, y i represents the i-th state parameter of the known threat signal in the database;

[0192] The weight ω of the i-th feature i Calculate according to the following formula:

[0193]

[0194] Where, is the variance of the i-th characteristic parameter of the known threat signal, is the variance of the jth characteristic parameter of the known threat signal, which is used to calculate the denominator of the weight, and n is the total number of characteristic parameters;

[0195] If the similarity index SSI exceeds or equals the monitoring threshold Worn set by the system, the device corresponding to the radio spectrum is listed as a threat target, and the threat handling module is triggered to make a decision on the handling operation, and establish a communication connection with the remote server and other defense equipment to receive and share the latest spectrum signature library updates;

[0196] If the similarity index SSI is lower than the monitoring threshold Worn set by the system, it means that the device corresponding to the radio spectrum is a permitted or low-risk target;

[0197] The monitoring threshold Worn set by the system is set by the system or the administrator according to actual conditions. This is a technical means well known to those skilled in the art. Those skilled in the art can refer to relevant technical manuals to learn about this technology, so it will not be described in detail in this embodiment.

[0198] In this embodiment, the spectrum monitoring module and the evaluation module cooperate with each other to collect and evaluate the spectrum characteristics of the threat target, ensuring that the entire system has the advantages of good defense effect, high threat identification reliability, strong defense evaluation capability, good collaborative defense capability, and high intelligence.

[0199] Optionally, the remote upgrade module includes a communication interface unit and a local threat library, wherein the communication interface unit establishes a communication connection with a remote server and other defense equipment and transmits spectrum characteristics for sharing, and the local threat library stores received or shared spectrum characteristic data;

[0200] The communication interface unit establishes a communication connection with the remote server and other defense equipment according to the following steps, and transmits the spectrum characteristics in a shared manner:

[0201] S31. Network connection initialization:

[0202] Hardware preparation: Install and configure the network adapter and ensure normal connection;

[0203] Start the wireless communication module and configure Wi-Fi or 4G / 5G connection parameters;

[0204] Confirm the connection status of the wired communication module;

[0205] Software preparation: Start the network protocol stack and ensure that the TCP / IP protocol is available;

[0206] Load and start the communication driver;

[0207] S32, establishing a communication connection:

[0208] Connect to the remote server: obtain the IP address of the remote server through DNS resolution;

[0209] Use TCP / IP protocol to establish a connection and enable SSL / TLS encryption;

[0210] After successful authentication, prepare for data transmission;

[0211] Connect to other defense devices: Use mDNS or UPnP protocols to discover other defense devices in the LAN;

[0212] Establish an encrypted connection via TCP / IP or UDP protocol;

[0213] S33. Data transfer and sharing

[0214] Data preparation: Read spectrum feature data from the local threat database;

[0215] Format data as JSON, XML, or Protobuf;

[0216] Data transmission: Use HTTP / HTTPS protocol to call the API of the remote server and send spectrum characteristic data;

[0217] Send data to other defense equipment via UDP broadcast or TCP / IP point-to-point transmission;

[0218] Data reception and storage: Receive data from remote servers via HTTP / HTTPS responses or WebSocket;

[0219] Receive data from other defense equipment via TCP / IP or UDP protocol;

[0220] Storing the received data in a local threat database;

[0221] Among them, HTTP / HTTPS protocol, TCP / IP or UDP protocol, SSL / TLS encryption are technical means well known to those skilled in the art. Those skilled in the art can refer to relevant technical manuals to learn about the technology, and therefore will not be described in detail in this embodiment.

[0222] In this embodiment, through the mutual cooperation between the remote upgrade module and the evaluation module, the spectrum characteristics of the threat target can be shared, thereby improving the joint defense capability against the threat target, ensuring that the entire device has the advantages of strong collaborative defense capability, fast response speed, high intelligence, reliable defense evaluation capability and good defense effect;

[0223] Optionally, the control and decision module includes a decision analysis unit and a decision execution unit, wherein the decision analysis unit determines a decision strategy for the handling operation of the threat handling module according to the evaluation result, and the decision execution unit controls the handling operation of the threat handling module according to the decision strategy;

[0224] The decision analysis unit obtains the similarity index SSI, the environmental conditions of the low-altitude area to be monitored, and the threat score of the threat target, and calculates a decision score DS;

[0225] Wherein, the decision analysis unit determines the decision strategy through the decision score DS;

[0226] Optionally, the decision execution unit transmits the decision strategy to the capture trigger component and performs a capture operation on the threat target;

[0227] In this embodiment, the decision analysis unit calculates the decision score DS according to the following formula:

[0228]

[0229] Where SSI is the similarity index, TL is the threat score, and EC is the environmental condition score. Its value is calculated according to the following formula:

[0230]

[0231] Where WS is the normalized value of wind speed, Vis is the normalized value of visibility, and Hum is the normalized value of humidity, which are calculated according to the following formula:

[0232]

[0233] Where H is the humidity data obtained by real-time detection, H min is the minimum humidity in the historical data, H max is the maximum humidity value in historical data;

[0234] The normalized value of visibility Vis is calculated according to the following formula:

[0235]

[0236] Where VI is the real-time measurement value of visibility, V min is the minimum visibility in historical data, V max is the maximum value of visibility in historical data;

[0237] The normalized value of wind speed WS is calculated according to the following formula:

[0238]

[0239] Where, WS current is the real-time wind speed measurement value, WS min is the minimum wind speed in historical data, WS max is the maximum wind speed in historical data;

[0240] The threat score TL is determined according to the following formula:

[0241]

[0242] Where V norm is the normalized velocity, D norm is the normalized distance, and its value is calculated according to the following formula:

[0243]

[0244] Where D is the distance of the threat target, which is obtained by radar detection. min The minimum distance allowed for the entire device, D max The maximum distance allowed for the entire installation;

[0245] Normalized velocity V norm Calculate according to the following formula:

[0246]

[0247] Where V is the moving speed of the threat target, which is obtained through radar detection, V min V is the minimum moving speed that can be captured by the radar. max The maximum moving speed that can be captured by the radar;

[0248] The decision analysis unit formulates a corresponding decision strategy based on the decision score; wherein the decision strategy includes:

[0249] Triggering the physical capture strategy:

[0250] When the decision score DS is higher than the threshold Strategy set by the system, it indicates a high threat and triggers the physical capture component;

[0251] On the contrary, ignore the strategy (strategy that does not need to trigger capture):

[0252] When the decision score DS is lower than or equal to the set threshold Strategy, it means the threat is low and the capture component is not triggered;

[0253] The decision strategy set by the system is set by the system according to the actual situation. This is a technical means well known to those skilled in the art. Those skilled in the art can refer to relevant technical manuals to learn about this technology, so it will not be described in detail in this embodiment.

[0254] The decision analysis unit transmits the formulated decision strategy to the capture trigger component, so that the capture trigger component triggers the physical capture component to trigger the physical capture of the threat target;

[0255] In this embodiment, through the mutual cooperation between the control and decision-making module and the threat handling module, the threat target can be captured and defended, ensuring that the entire device has the advantages of high defense reliability, rapid decision-making, strong decision-making evaluation capabilities and high intelligence.

[0256] Embodiment 2: This embodiment should be understood to include all the features of any of the above embodiments and further improve upon them. Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 、 Figure 5 、 Figure 6 、 Figure 7 、 Figure 8 、 Figure 9 、 Figure 10 、 Figure 11 、 Figure 12 and Figure 13 As shown, the threat handling module further includes a tracking unit and a tracking evaluation unit, wherein the tracking evaluation unit tracks and evaluates the threat target to determine the position of the threat target, and the tracking unit tracks the threat target according to the position data of the threat target determined by the tracking evaluation unit;

[0257] The tracking and evaluation unit includes a position sampling component and an analysis and judgment component. The position sampling component samples the position of the threat target, and the analysis and judgment component performs a comprehensive judgment on the threat target based on the position of the threat target collected by the position sampling component.

[0258] The position sampling component includes a following radar 30, an electronic compass, a GPS and a camera. The following radar 30 scans the surrounding environment and detects possible threat targets, and measures the relative distance d and azimuth θ of the threat targets. radar The camera collects image data of the threat target to confirm the type and location of the threat target, and the electronic compass measures the orientation angle θ of the defense device (including the capture unit and the guidance unit). compass , GPS collects the current location of the defense equipment (latitude and longitude (φ equip ,λ equip ) and height (h equip ));

[0259] The analysis and judgment component obtains the relative distance d and azimuth angle θ acquired by the position sampling component radar , orientation angle θ compass , calculate the relative azimuth angle θ:

[0260] θ=θ compass +θ radar ;

[0261] Where θ radar is the azimuth angle of the threat target relative position sampling component, θ compass The orientation angle of the sampling component relative to the defense device;

[0262] When the threat target is constantly moving, the relative distance and azimuth of the threat target are obtained through radar and electronic compass, and combined with the GPS position information of the defense equipment;

[0263] The Earth's surface is spherical: Assume that the Earth is an ideal sphere with a radius of R (about 6371 km);

[0264] Geodetic coordinate system: Use geodetic coordinate system, that is, longitude and latitude (λ target 、φtarget ) and height (h target ) indicates the location of the threat target;

[0265] The position vector of the threat target relative to the defense equipment is Its size is d and its azimuth is θ, which converts the position of the threat target relative to the defense equipment into longitude and latitude changes on the earth's surface;

[0266] The analysis and judgment component calculates the target longitude λ of the threat target according to the following formula target :

[0267]

[0268] Where d is the relative distance between the threat target and the position sampling component, θ is the relative azimuth of the threat target, R is the radius of the earth, and φ equip Latitude for defensive equipment;

[0269] The analysis and judgment component calculates the target latitude φ of the threat target according to the following formula target :

[0270]

[0271] Where d is the relative distance between the threat target and the position sampling component, θ is the relative azimuth of the threat target, and R is the radius of the earth;

[0272] The analysis and judgment component calculates the target height h of the threat target according to the following formula target :

[0273] h target =h equip ;

[0274] Where h equip is the height of the defensive equipment;

[0275] In this embodiment, the tracking evaluation unit calculates the longitude and latitude of the threat target (λ target 、φ target ) and height (h target ) is transmitted to the following unit, triggering the following unit to follow the threat target;

[0276] The tracking and evaluation unit locates and analyzes the threat target according to the following steps:

[0277] S41, continuous measurement by following radar 30: continuously use following radar 30 to measure the relative distance d and azimuth angle θ of the threat target radar ;

[0278] Continuous electronic compass measurement: Continuously use the electronic compass to measure the heading angle θ of the defense equipment compass ;

[0279] Continuous GPS measurement: Continuously use GPS to obtain the latitude, longitude and altitude of defense equipment;

[0280] S42, position and speed update:

[0281] Position update: Based on the latest tracking radar 30, electronic compass and GPS data, the longitude, latitude and altitude of the threat target are updated in real time;

[0282] S43. Speed ​​estimation: Estimate the speed V of the threat target by calculating the position change between two adjacent measurements:

[0283]

[0284] Where Δφ is the change in latitude, which is calculated from the change in latitude between two time points; Δλ is the change in longitude, which is calculated from the change in longitude between two time points; R is the radius of the Earth; and φ is the distance between the Earth and the Earth. equip is the current latitude of the defense equipment, Δt is the time change, and its value is calculated by the time change between two time points;

[0285] The tracking unit follows the threat target according to the following steps:

[0286] S51, obtaining the latitude, longitude and altitude data of the threat target from the tracking and evaluation unit;

[0287] S52: Perform linear prediction using the current speed and direction to determine the next position of the threat target;

[0288] S53, adjusting the position of the capture unit according to the real-time position and speed data of the threat target;

[0289] The tracking unit includes a horizontal steering component and a pitch adjustment component, wherein the horizontal steering component adjusts the horizontal steering of the pitch adjustment component, and the pitch adjustment component adjusts the pitch angle of the capture unit 3;

[0290] The horizontal steering component includes a steering seat 12, a steering drive mechanism 22, a connecting rod 18, a steering gear 21, a fixed seat 11, a positioning probe 19, and at least two positioning markers 20. The fixed seat 11 supports the steering seat 12, one end of the connecting rod 18 is connected to one side end face of the steering seat 12, and the other end of the connecting rod 18 is hinged to one side end face of the fixed seat 11 to form a hinged portion, the steering gear 21 is nested on the connecting rod 18, the steering drive mechanism 22 is arranged on the fixed seat 11, and meshes with the steering gear 21, so that the steering drive mechanism 22 drives the steering seat 12 to rotate along the axis of the hinged portion, at least two positioning markers 20 are distributed at equal intervals along the circumference of the axis of the hinged portion, the positioning probe 19 is arranged on the steering seat 12, and extends toward one side of the positioning marker 20 to identify the positioning marker 20;

[0291] Among them, the positioning markers 20 at different angular positions are all different;

[0292] The pitch adjustment component includes a pitch seat 9, a standing seat 10, a pitch adjustment drive mechanism 17, a drive rod 15, a pitch adjustment gear 14, a pitch monitoring probe 16, and at least two pitch marking members, the standing seat 10 is arranged on the steering seat 12, one end of the drive rod 15 is connected to one side end face of the pitch seat 9, and the other end of the drive rod 15 is hinged to one side end face of the standing seat 10 to form a pitch adjustment part, the pitch marking members are distributed at equal intervals along the circumference of the axis of the pitch adjustment part, the pitch monitoring probe 16 is arranged on the pitch seat 9 and extends toward one side of the pitch marking member to identify the position of the pitch marking member, the pitch adjustment gear 14 is nested on the drive rod 15, the pitch adjustment drive mechanism 17 is arranged on the standing seat 10, and meshes with the pitch drive gear, and drives the pitch seat 9 to rotate along the axis of the pitch adjustment part;

[0293] Wherein, the pitch marking elements at different angular positions are all different;

[0294] In this embodiment, the capture unit 3 is provided on the pitch seat 9 and rotates following the pitch adjustment rotation of the pitch seat 9;

[0295] The tracking unit further includes an evaluator, which evaluates the latitude, longitude and altitude data of the threat target and converts the data into a horizontal steering amount that can be controlled by the steering component and a pitch adjustment amount that can be identified by the pitch adjustment component:

[0296] Specifically: The evaluator calculates the horizontal steering amount θ according to the following formula horizontal :

[0297]

[0298] Where λ target is the longitude of the threat target (expressed in radians), λ equip is the longitude of the defense equipment (in radians), φ target is the latitude of the threat target (expressed in radians), φ equip Latitude of the defensive equipment (in radians);

[0299] The estimator calculates the pitch adjustment amount θ according to the following formula vertical :

[0300]

[0301] Where h target is the height of the threat target, h equip is the height of the defensive equipment, d horizontal is the horizontal distance, and its value is calculated according to the following formula:

[0302] d horizontal =R·arccos(sin(φ equip )·sin(φ target )+cos(φ equip )·cos(φ target )·cos(λ target -λ equip ));

[0303] Where R is the radius of the Earth (about 6371000 meters), λ target is the longitude of the threat target (expressed in radians), λ equip is the longitude of the defense equipment (in radians), φ target is the latitude of the threat target (expressed in radians), φ equip Latitude of the defensive equipment (in radians);

[0304] In this embodiment, the central processing unit is based on the horizontal steering amount θ of the evaluator. horizontal and pitch adjustment θ vertical The result triggers adjustment of the steering drive mechanism and the pitch adjustment drive mechanism, so that the capture unit can accurately follow the threat target and improve the capture accuracy and reliability of the entire threat target;

[0305] At the same time, when the steering drive mechanism 22 drives the steering seat 12 to rotate, the positioning probe 19 feeds back the horizontal steering angle of the rotation to the central processor in real time. The rotation angle of the steering seat 12 is consistent with the required horizontal steering amount θ. horizontalIf the angle is not consistent, the central processing unit controls the steering drive mechanism to continue driving the steering seat until the angle feedback from the recognition probe is consistent with the required horizontal steering amount θ. horizontal Until they are equal;

[0306] Similarly, when the pitch adjustment drive mechanism 17 drives the pitch seat 9 to rotate, the pitch monitoring probe 16 feeds back the pitch rotation angle to the central processor in real time. The pitch rotation angle of the pitch seat 9 is proportional to the required pitch adjustment amount θ. vertical If the pitch adjustment amount θ is not equal to the pitch adjustment amount θ, the central processing unit controls the pitch adjustment drive mechanism to continue driving the pitch seat until the pitch rotation angle feedback from the pitch monitoring probe is equal to the required pitch adjustment amount θ. vertical Until they are equal;

[0307] In this embodiment, the tracking unit, the tracking evaluation unit and the capture unit cooperate with each other, so that the capture unit can capture the threat target more accurately and reliably, ensuring that the entire device has the advantages of good defense effect, strong low-altitude defense capability, fast defense response speed and high intelligence.

[0308] The contents disclosed above are only preferred feasible embodiments of the present invention and do not limit the scope of protection of the present invention. Therefore, all equivalent technical changes made using the contents of the present invention description and drawings are included in the scope of protection of the present invention. In addition, the elements therein can be updated as technology develops.

Claims

1. A low-altitude defense device capable of remote spectrum feature upgrade, comprising a server, characterized in that: The low-altitude defense device further includes a spectrum monitoring module, an evaluation module, a remote upgrade module, a threat disposal module, and a control and decision module, and the server is connected to the spectrum monitoring module, the evaluation module, the remote upgrade module, the threat disposal module, and the control and decision module respectively; The spectrum monitoring module is used to scan the radio spectrum in the low-altitude area in real time and extract characteristic parameters. The evaluation module evaluates the characteristic parameters with the characteristic parameters of known threat signals in the remote server and other defense equipment to form an evaluation result. The remote upgrade module triggers the establishment of a communication connection with the remote server and other defense equipment based on the evaluation result, and receives and shares the latest spectrum feature library updates. The control and decision module analyzes the decision strategy of the threat disposal module's disposal operation based on the evaluation result. The threat disposal module transmits an interference signal to block or disrupt the communication and control of the threat target based on the decision strategy of the control and decision module; Among them, the threat handling module includes an interference transmission unit, a guidance unit and a capture unit. The interference transmission unit interferes with the threat target in the low-altitude area, the guidance unit guides the threat target that establishes interference communication so that the threat target enters the capture range, and the capture unit captures the threat target that enters the capture range.

2. The low-altitude defense device capable of remote spectrum feature upgrade according to claim 1 is characterized in that: The interference transmission unit includes a spectrum analyzer, an interference signal generator, a high-frequency amplifier, and a directional antenna array. The spectrum analyzer monitors and analyzes the radio spectrum in the low-altitude area in real time, identifies and locks the communication frequency of the threatening target. The interference signal generator generates an interference signal with adjustable frequency and intensity to cover the communication frequency band of the threatening target. The high-frequency amplifier amplifies the power of the interference signal to ensure its effective coverage within the target communication frequency band. The directional antenna array is used to transmit the interference signal in a directionally controlled manner. Wherein, the interference transmitting unit is arranged in a low-altitude area to be monitored.

3. The low-altitude defense device capable of remote spectrum feature upgrade according to claim 2 is characterized in that: The guidance unit includes a guidance antenna, a guidance signal generator, and a signal controller. The guidance antenna transmits a guidance signal and performs directional control on the threat target. The guidance signal generator generates a false navigation or control signal for guiding the threat target. The signal controller controls the transmission power of the guidance signal. The false navigation or control signal that guides the threat target is generated according to the planned guidance path.

4. The low-altitude defense device capable of remote spectrum feature upgrade according to claim 3 is characterized in that: The capture unit includes a positioning identification component, a capture trigger component and a physical capture component. The positioning identification component identifies and locates the threat target to form position data of the threat target. The physical capture component physically captures the threat target according to the position data. The capture trigger component triggers the physical capture component to capture the threat target according to the decision strategy of the control and decision module.

5. The low-altitude defense device capable of remote spectrum feature upgrade according to claim 4 is characterized in that: The spectrum monitoring module includes a multi-band antenna array, a spectrum analyzer and a data storage device. The multi-band antenna array receives radio signals of different frequency bands in the low-altitude area. The spectrum analyzer analyzes the received radio signals and extracts spectrum characteristic parameters. The data storage device stores the spectrum characteristic parameters of the radio signals.

6. The low-altitude defense device capable of remote spectrum feature upgrade according to claim 5 is characterized in that: The evaluation module obtains the spectrum characteristic parameters and the characteristic parameters of the known threat signals stored in the database, and calculates the similarity index SSI according to the following formula: ； Where S i is the similarity between the i-th characteristic parameter and the i-th characteristic parameter of the known threat signal in the database, ω i is the weight of the i-th feature, whose value is determined according to the historical characteristic parameters of the known threat signal; n is the total number of characteristic parameters; If the similarity index SSI exceeds or is equal to the monitoring threshold Worn set by the system, the device corresponding to the radio spectrum will be listed as a threat target, and the decision on the disposal operation of the threat disposal module will be triggered, and a communication connection will be established with the remote server and other defense equipment to receive and share the latest spectrum feature library updates.

7. The low-altitude defense device capable of remote spectrum feature upgrade according to claim 6, characterized in that: The remote upgrade module includes a communication interface unit and a local threat library. The communication interface unit establishes a communication connection with a remote server and other defense equipment and transmits spectrum characteristics for sharing. The local threat library stores received or shared spectrum characteristic data.

8. The low-altitude defense device capable of remote spectrum feature upgrade according to claim 7, characterized in that: The control and decision module includes a decision analysis unit and a decision execution unit. The decision analysis unit determines a decision strategy for the threat handling module's handling operation based on the evaluation result, and the decision execution unit controls the handling operation of the threat handling module based on the decision strategy. The decision analysis unit obtains the similarity index SSI, the environmental conditions of the low-altitude area to be monitored, and the threat score of the threat target, and calculates a decision score DS; The decision analysis unit determines the decision strategy through the decision score DS.

9. The low-altitude defense device capable of remote spectrum feature upgrade according to claim 8, characterized in that: The jamming transmitting unit jams the threat target according to the following steps: S1. Spectrum analyzer scans the radio spectrum in low-altitude areas to detect and identify the communication frequencies of threat targets; S2. The interference signal generator generates a corresponding interference signal according to the identified communication frequency; S3, the high-frequency amplifier amplifies the power of the interference signal to ensure that it can cover the communication frequency band of the threatening target; S4. Through the directional antenna array, the jamming signal is accurately transmitted to the area where the threat target is located, blocking its communication.

10. The low-altitude defense device capable of remote spectrum feature upgrade according to claim 9, characterized in that: The decision execution unit transmits the decision strategy to the capture trigger component and performs a capture operation on the threat target.

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