1398results about "Defence devices" patented technology

The invention provides a directional energy multi-target interference system based on an ultra-wideband phased array technology, and the system integrates signal perception, target recognition, interference signal generation and phased array control, so as to achieve the precise interference of an unmanned aerial vehicle cluster. The signal sensing module scans an airspace target through the ultra-wideband phased-array antenna array and obtains spectrum characteristics of a target signal. The target identification module analyzes signal features, identifies an individual target and predicts a motion track and a communication protocol of the individual target. And the phased array control module calculates and adjusts antenna beam forming parameters, and dynamically controls the radiation direction, phase and transmitting power of the antenna. The interference signal generation module generates a matched interference waveform based on the target communication protocol and the trajectory information. The ultra-wideband phased-array antenna array adopts a digital beam forming technology. According to the invention, efficient and accurate directional energy interference can be realized under multiple frequency bands, the confrontation capability of the unmanned aerial vehicle cluster is improved, and the method is suitable for defense tasks in electronic warfare and complex electromagnetic environments.

The invention provides a multi-means fusion unmanned aerial vehicle countering method and system, and the method comprises the steps: obtaining three-dimensional topographic data, atmospheric turbulence features and electromagnetic spectrum features in real time through deploying a distributed sensing array in a target region, constructing a multi-layer virtual signal barrier boundary, and generating a frequency band interference parameter set; when it is detected that the unmanned aerial vehicle passes through the barrier boundary, the cooperative interference module is triggered to generate an initial interference signal weight, polarization direction distribution and power density distribution are dynamically corrected in combination with electromagnetic scattering characteristics fed back by the unmanned aerial vehicle in real time, and the initial interference signal weight serves as flight path modeling input and is used for generating a three-dimensional dynamic flight path model; according to the method, the azimuth angle correction, the elevation angle compensation coefficient and the energy gradient parameter of the ground interception equipment are calculated, and then the dynamic interception strategy is generated through the dynamic strategy fuser, so that the interference and interception efficiency of the unmanned aerial vehicle is improved through fusion and dynamic closed-loop control of excessive means, and the full-link closed loop from environmental perception to interception control is realized.

The present application relates to a method and a system for intercepting and controlling target-drones (2), allowing to control the target-drone's flight route (4), causing it to land in a predetermined landing position. For that purpose, the method of the invention provides the configuration of flight routes (4) for controlling the target-drone's flight path in order to direct it to the landing position, without causing any physical damage to the target-drone (1). This control is achieved by using police-drones (1) which are adapted to transmit redirection signals (3) used as a way to program a new flight route (4) for the at least one target-drone (2) to a landing position.

The invention, which relates to the technical field of unmanned aerial vehicle detection and countering, discloses a thunder-magnetic fusion linkage unmanned aerial vehicle detection countering system comprising a low-altitude radar module, an omnidirectional electromagnetic detection module, a dual-light detection tracking module, an information fusion module, a positioning tracking module and a countering module. The unmanned aerial vehicle detection countering system is complete in function and covers a detection means from target search, discovery, identification and confirmation of the unmanned aerial vehicle to positioning and tracking, a strike means from electromagnetic suppression interference and navigation deception and finally evaluation and confirmation of a target countering effect, and a detection countering closed-loop system of the whole process of'detection, control, strike and evaluation 'is achieved; the advantages of the low-altitude radar, the omnidirectional electromagnetic detection device and the dual-light detection tracking device are fully exerted, the defects of each single-machine device are made up, the target discovery accuracy of the unmanned aerial vehicle is greatly improved, and the false alarm rate is reduced.

The invention relates to the technical field of unmanned aerial vehicle detection, in particular to a monitoring and early warning system and method for countering unmanned aerial vehicle detection interference, and in the monitoring and early warning system, a signal receiving module independently receives electric signals of multiple unmanned aerial vehicles through array space stations; the abnormal signal detection module performs feature extraction, and detects abnormal signals by using frequency feature change and a spectrum analysis technology; the time difference of arrival detection module calculates the time difference of arrival of each space station to the abnormal signal, and the angle of arrival detection module analyzes and determines the angle of arrival through a space covariance matrix; the cross positioning module synthesizes the time difference and the angle information to determine the position of the abnormal unmanned aerial vehicle; and the adaptive interference suppression module identifies the type of an abnormal unmanned aerial vehicle by using a feature extraction result and a machine learning model, selects a suppression strategy, controls an array space station to align to the position of the abnormal unmanned aerial vehicle, realizes efficient suppression, and protects normal operation of a legal unmanned aerial vehicle and other aerial equipment at the same time.

The invention provides an anti-unmanned aerial vehicle defense method and system based on radar and audio, and the method comprises the steps: constructing a three-dimensional airspace monitoring network through radar sensors and audio capture devices which are disposed at different heights and positions, carrying out the time-space synchronous multi-modal information fusion, and obtaining signal audio alignment data; a real-time behavior track of the target in a three-dimensional space is generated through a space positioning algorithm, a behavior profile modeling technology is combined with a machine learning algorithm to obtain a behavior profile with unique identification, the behavior profile is analyzed to obtain an analysis result, and a threat level judgment model is constructed according to the analysis result; the threat level judgment model is utilized to evaluate the intention and risk level of the abnormal behavior of the unmanned aerial vehicle to generate a threat evaluation result, and a self-adaptive threat evaluation engine is utilized to generate a target defense scheme; according to the technical scheme provided by the invention, the precision and reliability of target positioning and the intelligent level are improved, and the capability of coping with complex threats is enhanced.

An unmanned aerial vehicle countering method, and a related apparatus. The method comprises: acquiring a frequency band of a frequency-hopping channel for communication between an unmanned aerial vehicle and a remote-control terminal; and generating and transmitting an interference signal according to the frequency band of the frequency-hopping channel, wherein the frequency band of the interference signal covers the frequency bands of all frequency-hopping channels simultaneously.

The invention discloses a region denial method and system for an unmanned aerial vehicle. Precise defense is realized through a four-stage cooperation mechanism. The method comprises the following steps: S1, a multi-source detection stage; s2, an intelligent identification stage; s3, a dynamic response stage; and S4, a closed loop feedback stage. The system architecture comprises a control center, a composite detection array, an intelligent analysis engine and a multi-mode countering unit, and a complete automatic link from situation awareness to effect execution is formed. Through cooperation of soft and hard killing means, detection and recognition integrated design and an intelligent decision engine, the unmanned aerial vehicle interception efficiency in a complex electromagnetic environment is remarkably improved, an echelon defense system covering electron suppression to precise destroy is constructed, and the method is particularly suitable for important place protection, city security and other high-value target protection scenes.

The invention discloses a fixed area unmanned aerial vehicle countering method and system. The method comprises the steps of obtaining a three-dimensional coordinate of a to-be-identified unmanned aerial vehicle; inputting the obtained spectrum data of the to-be-identified unmanned aerial vehicle into an invasive unmanned aerial vehicle detection model constructed by a deep learning algorithm to generate an invasive unmanned aerial vehicle signal; in response to the invading unmanned aerial vehicle signal, acquiring multispectral imaging data of the invading unmanned aerial vehicle based on the visual image acquisition base station; performing feature-level fusion on the radar wave detection data, the spectrum data and the multispectral imaging data based on a multi-modal fusion algorithm of space-time registration to obtain fusion feature data of the target area; performing feature extraction of different dimensions on the fused feature data, and establishing a threat situation three-dimensional thermodynamic diagram of the invading unmanned aerial vehicle based on the extracted features; and executing a security countering strategy generated based on the threat situation three-dimensional thermodynamic diagram. According to the method, the unmanned aerial vehicle countering requirement in a complex environment is met.

The invention discloses an unmanned aerial vehicle intrusion real-time alarm and countering guidance system based on RID information. The system comprises a multi-source information acquisition and fusion module, an intrusion detection and threat evaluation module, a real-time alarm and countering strategy generation module, a feedback evaluation and strategy iteration module, a signal loss prediction and compensation module, a comprehensive processing terminal module and the like. The system establishes a three-dimensional geofence model by analyzing remote identification information of the unmanned aerial vehicle and fusing radar, photoelectric, electromagnetic and other multi-source data, and performs dynamic judgment and multi-factor threat grading on a target intrusion state. Multi-mode alarm is automatically triggered according to the threat level, and a hierarchical countering scheme from broadcast alarm and electromagnetic interference to physical capture is generated; and when the RID signal is lost, the system realizes continuous tracking and state recovery of the target by using a motion prediction and probability association algorithm.

The invention provides an unmanned aerial vehicle intrusion real-time interception method and system based on an airspace electronic fence. The method comprises the steps of firstly obtaining real-time flight monitoring data of an unmanned aerial vehicle in a target airspace, then analyzing predefined airspace electronic fence configuration information to generate a virtual boundary constraint set, and then combining three-dimensional space coordinates and the virtual boundary constraint set to judge whether the unmanned aerial vehicle invades a no-fly zone or not. When it is judged that the unmanned aerial vehicle invades the no-fly zone, a collaborative interception instruction sequence is generated, finally, the collaborative interception instruction sequence is sent to the unmanned aerial vehicle through a radio frequency communication link, the unmanned aerial vehicle is driven to execute flight path correction, and real-time interception of the unmanned aerial vehicle is completed; according to the technical scheme, the real-time performance and safety of sensitive airspace protection are improved, meanwhile, the risk of mistakenly intercepting legal aircrafts is avoided, and non-lethal precise expelling is completed on the premise of completely eradicating the crash risk.

The invention provides a low-altitude unmanned aerial vehicle reconnaissance and disposal integrated protection system, and belongs to the technical field of low-altitude defense, airspace safety and unmanned aerial vehicle management, and the system comprises a low-altitude intrusion detection and tracking module which obtains target area information through a radar and a camera, carries out the 4DFFT preprocessing of radar data, and carries out the image preprocessing of an RGB image; unifying the preprocessed data to a format required by a target detection and tracking algorithm through respective input adaptation modules; and a multi-source information fusion decision-making mechanism is utilized to realize real-time and high-precision unmanned aerial vehicle detection and tracking functions. And the unmanned aerial vehicle identity recognition module obtains the identity information of the unmanned aerial vehicle through the RFID tag, and verifies the identity legality of all the unmanned aerial vehicles in the region by using a joint optimization power control and time slot allocation algorithm. And the unmanned aerial vehicle intelligent scheduling module optimizes path planning, task allocation and resource management through reinforcement learning, dynamically allocates tasks and optimizes route planning.

The invention discloses an anti-unmanned aerial vehicle power rotary flying rope net capturing device and a control method thereof, and belongs to the technical field of unmanned aerial vehicles. An electromagnet circuit is controlled to be switched on through a relay, so that an electromagnet instantly loses attraction force, and the four brushless motors are rapidly, synchronously and accurately released; the brushless motor is used as a power source for unfolding the catching net to drive the catching net to unfold and cover a target. Wherein the magnet vane is attracted with the electromagnet when the electromagnet is powered off so that the four corners of the catching net can be fixed to the unmanned aerial vehicle, the influence of the electromagnet on the brushless motor is effectively isolated in the whole process, and the flight stability is ensured. The net ring can rotate freely, the direction of the catching net traction rope is kept stable, and winding with a motor or a propeller is avoided; the ball bearing and the magnet vane jointly ensure the height of the catching net traction rope, the catching net device is prevented from being separated from the motor, and the whole device can achieve synchronous and safe falling of all components and achieve the recovery function.

The invention provides an unmanned aerial vehicle navigation signal interference method and system based on an electromagnetic shielding array. According to the method, firstly, a navigation signal sent by a target unmanned aerial vehicle is monitored, positioning information transmission characteristics in the navigation signal are identified, then a periodic dynamic interference mode synchronous with a navigation signal transmission period is generated according to the positioning information transmission characteristics, and then, through spatial gradient barrier distribution of an electromagnetic shielding array, a dynamic interference mode is generated. Converting the periodic dynamic interference mode into directional space interference energy, and finally controlling the directional space interference energy to be continuously applied to a navigation signal receiving path of the unmanned aerial vehicle so as to complete navigation signal interference of the unmanned aerial vehicle. According to the technical scheme provided by the invention, a frequency hopping anti-interference mechanism of the unmanned aerial vehicle is effectively cracked, invalid energy consumption is remarkably reduced, the interference efficiency is improved, and error interference on non-target equipment is avoided.

The utility model discloses a rocket type catching net launching device which comprises gun barrels, gas bombs, a percussion mechanism, a catching net, a cartridge receiver and a folding telescopic rod, the gas bombs are arranged in the corresponding gun barrels, the percussion mechanism is arranged at the tail ends of the gun barrels, the catching net is connected with the gas bombs, and a fixing part is fixedly installed at the front end of an inner cavity of the cartridge receiver. The tail end of the gun barrel is detachably installed on the front side of the fixing component, and the folding telescopic rod is arranged at the front end of the gun barrel. The high-pressure gas cylinder is adopted as launching power, compared with power sources such as ammunition and fuel, higher safety is achieved, materials are easy to obtain, cost is lower, the unfolding angle of the gun barrel can be freely adjusted according to actual requirements, the larger the unfolding angle is, the higher the unfolding speed of the catching net is, and the closer the flying distance is. The method is suitable for close-range combat; otherwise, the smaller the unfolding angle is, the slower the unfolding speed of the catching net is, the farther the flying distance is, and the catching net is suitable for long-distance combat.

Various countermeasure dispensing systems (or CMDSs) and method of use are described herein. CMDS may include a dispenser assembly operably engaged with a platform where at least one electrical connection provides electrical communication between the dispenser assembly and a sequencer. CMDS may also include a magazine assembly operably engaged with the dispenser assembly, wherein the magazine assembly comprises a magazine configured to hold at least two countermeasure expendables. CMDS may also include a breechplate assembly operably engaged with the magazine assembly and adapted to dispense the at least two countermeasure expendables. CMDS may also include at least one magazine identification switch (MIS) operably engaged with the magazine assembly and the breechplate assembly. CMDS may also include that the at least one MIS is configured to enable the sequencer and the breechplate assembly to selectively dispense at least one countermeasure expendable from the at least two countermeasure expendables.

The invention discloses an intelligent generation method and device for an unmanned aerial vehicle countering strategy, relates to the technical field of unmanned aerial vehicles, and aims to solve the problems of poor countering means matching effect and low efficiency caused by limited applicable scenes, lack of deep semantic support and single means of unmanned aerial vehicle countering in the prior art. The method comprises the following steps: acquiring multi-source sensor data of a target area, and determining environment information of the target area and situation type information of a suspicious unmanned aerial vehicle; extracting to-be-matched features corresponding to the situation type information from the multi-source sensor data, performing similarity matching on the to-be-matched features and the features of the multiple target matching entity nodes, and determining a matching result; based on the matching result and the environment information, obtaining at least one countering means from the unmanned aerial vehicle countering knowledge graph and generating an initial countering strategy set; and processing the initial countering strategy set by adopting a target optimization algorithm to obtain a target countering strategy. The method is used for improving the matching precision and the matching efficiency of the unmanned aerial vehicle countering technology.

The invention relates to the technical field of unmanned aerial vehicle countering, and discloses an unmanned aerial vehicle intercepting method and system. According to the method, first flight information and target point cloud data obtained by a target radar are analyzed through a target control end, target appearance information and a gravity center position of an incoming attack target are obtained, and the number of first unmanned aerial vehicles required for damaging the incoming attack target is determined according to the target appearance information. And the ground end determines the number of second unmanned aerial vehicles required for interception and the array type according to the target appearance information, predicts the air interception time and the air interception position according to the first flight information, and sends the information to the unmanned aerial vehicle swarm. The unmanned aerial vehicle swarm forms a flight plane according to the air interception position and a rectangular grid, an electromagnetic wave defense net is formed to capture second flight information of the incoming target, target unmanned aerial vehicles actually intercepted are determined according to the second flight information and the number of the second unmanned aerial vehicles, and self-explosion unmanned aerial vehicles are determined in combination with the number of the first unmanned aerial vehicles; and high-precision interception and self-explosion damage of an incoming target are realized.

The invention relates to the technical field of unmanned aerial vehicle control, and particularly discloses a wrist-worn unmanned aerial vehicle countering control method and system, through cooperative work of a radar sensor, an infrared sensor, an optical sensor and a GPS sensor, flight state data of an unmanned aerial vehicle can be obtained, and state prediction and target tracking are performed on the unmanned aerial vehicle by using a particle filtering algorithm; a deviation coefficient between an actual flight trajectory and a preset trajectory is calculated through a dynamic time warping algorithm, and the system can judge whether the unmanned aerial vehicle deviates from the trajectory and adjust an interference strategy in time; the frequency, the intensity and the transmitting direction of the interference signal are dynamically optimized according to the flight state of the unmanned aerial vehicle so as to form an efficient countering strategy; and by comprehensively evaluating the countering response time and the success rate, a countering precision coefficient is calculated, so that data support is provided for optimization of a subsequent countering strategy.

The invention relates to the technical field of grid armored platforms, and particularly discloses a composite additional grid armored system platform which comprises a composite additional grid armored system main platform. The composite additional grating armored system main platform comprises a side composite additional grating armored system platform, a top composite additional grating armored system platform, a top composite grating armored ceiling and a rear composite additional grating armored system platform; a modular and multifunctional basic design thought is adopted, advanced technical means such as material science analysis and research, engineering structure mechanics design, key part transplantation and special development are adopted, a certain type of walking combat vehicle is used as a platform test device for operation, a practical task is used as a research target, and a set of walking combat vehicles suitable for plains, cities, towns and the like is developed. The device is a complete set of external equipment used for tasks such as enemy anti-armored equipment, suicide type unmanned aerial vehicles and self-hiding.

The invention discloses a tilting quad-rotor unmanned aerial vehicle and an unmanned aerial vehicle countering system, and the system comprises a flight control module which is used for controlling the tilting quad-rotor unmanned aerial vehicle to fly towards a target unmanned aerial vehicle, and adjusting the flight mode and the flight speed of the tilting quad-rotor unmanned aerial vehicle in real time according to the distance and the speed difference in the flight process. The target identification module is used for collecting video stream information of a target airspace and detecting whether a target unmanned aerial vehicle exists in the video stream information frame by frame; the target tracking module is used for determining the distance and the speed difference between the target unmanned aerial vehicle and the tilt quad-rotor unmanned aerial vehicle under the condition that the target unmanned aerial vehicle exists in the video stream information; and the net gun capturing module is used for calculating a launching parameter of a capturing net when the distance between the target unmanned aerial vehicle and the tilt quadrotor unmanned aerial vehicle is smaller than a preset distance, and launching the capturing net to the target unmanned aerial vehicle according to the launching parameter. According to the scheme, the unmanned aerial vehicle can be precisely countered.

The invention provides a lift wing unmanned aerial vehicle high maneuvering target interception method based on visual servo, which is used for using a lift wing unmanned aerial vehicle to cope with an invasion target moving at a high speed and using a lift wing platform. Lift wing modeling based on a rotation matrix and high-precision and high-dynamic autonomous interception control based on visual servo are introduced to serve as key technologies for supporting interception of the lift wing unmanned aerial vehicle. The effectiveness of the algorithm under airborne perception and control is verified, and the feasibility of the algorithm in practical application is consolidated. The contributions jointly promote the development of an unmanned aerial vehicle autonomous interception technology, and an important tool and method are provided for effectively coping with long-distance high-speed target intrusion threats. In addition, an IMU (Inertial Measurement Unit) measurement model and an image delay measurement model continue to be used, and a delay state estimation problem is researched.

The invention discloses a pneumatic anti-unmanned aerial vehicle interception net launching device, and belongs to the technical field of low slow small unmanned aerial vehicle target countering. The pneumatic type anti-unmanned aerial vehicle interception net launching device comprises a percussion unit, the percussion unit comprises a percussion pipe, an adapter and an impact block, an air storage cavity is formed in the percussion pipe, the adapter is connected with the first end of the percussion pipe, a firing pin is arranged in the adapter in a sliding mode, and a vent hole communicated with the air storage cavity is formed in the side wall of the adapter; the impact block is arranged in the percussion pipe; the power unit comprises a container, and one end, with a to-be-punctured layer, of the container is detachably connected with the adapter; the intercepting unit comprises an intercepting pipe with a storage cavity and a launching cavity, the intercepting pipe is connected with the second end of the percussion pipe, the launching cavity is communicated with the gas storage cavity, the intercepting net is initially folded and stored in the storage cavity, the intercepting net is connected with the traction block, and the launching cavity is filled with the traction block. According to the method, the low-slow small unmanned aerial vehicle target can be intercepted in a quick, efficient and low-cost manner.

The invention discloses a remote catching net catching device and belongs to the technical field of catching, the height of the device is smaller than the outer diameter, the device is launched in the radial direction of the device, and the device comprises an intermediate control module, an external launching module and a catching net; the multiple external injection modules are located on the periphery of the middle control module, the adjacent external injection modules are detachably connected, and the external injection modules are detachably connected with the middle control module; the catching net is located in an annular cavity formed by splicing a plurality of external shooting modules, and one end of the catching net is connected with the external shooting modules; the intermediate control module is used for receiving an operation instruction, and according to the instruction of the operation instruction, the intermediate control module delays or instantly emits the external emission module to the outside so as to ensure that the capturing net is horizontally unfolded above the front part of the target object; the external shooting module pulls the catching net to move downwards so that the catching net can fall on the target object. According to the device, the catching net is approximately in a horizontal opening state and does forward parabolic motion, it is guaranteed that the catching net can fall down from the position above a target object, the effective catching area is increased, and the catching efficiency is improved.

A projectile and method for stopping aerial vehicles. The projectile comprises a shell—and a bunch of filaments. The bunch is wound in a coil and placed inside the shell. The projectile according to the solution may be brought to a target by different methods and utilising different means. For example, the projectile may be fired with compressed air or a propulsion charge, by using a compressed air weapon or rocket launcher. In addition, the projectile may be taken to the target by using a rocket or aerial vehicle.

The Portable Digital Twin Robotic System based on Computer Vision for the Identification, Tracking, and Destruction of Suicide Drones is an innovative system that autonomously identifies, tracks, and destroys suicide drones by leveraging Digital Twin and computer vision technology. This system analyzes visual data using artificial intelligence algorithms and performs precise positioning in real-time. Aided by the Digital Twin, the precise simulation of the system's dynamics and movement enables the optimization of paths and precise control of the robot, while the real-time communication between the digital model and the physical robot provides the capability for immediate updates of control algorithms and predictive maintenance. The portable design and the capability to be connected to various types of weapons make this system suitable for installation on military and non-military platforms and improves the security of sensitive areas.

The invention discloses a net capturing type unmanned aerial vehicle countering device, and belongs to the technical field of unmanned aerial vehicle countering equipment. The problem that an existing netting type unmanned aerial vehicle is difficult to catch an opposite unmanned aerial vehicle to surf the internet and smoothly and successfully carry and recover is solved. The netting type unmanned aerial vehicle countering device comprises an aerial carrier unmanned aerial vehicle and further comprises a netting device installed below a vehicle body of the aerial carrier unmanned aerial vehicle, the netting device comprises a connecting mechanism, a self-disengaging mechanism and a catching net, the connecting mechanism comprises a connecting ring and a contraction rope, and the connecting ring is located under the vehicle body of the aerial carrier unmanned aerial vehicle; one end of the contraction rope is arranged in a ring hole of the connecting ring in a penetrating mode, the other end of the contraction rope is arranged in a net hole in the edge of the catching net in a penetrating mode along the edge of the catching net, and the self-disengaging mechanism is used for opening the catching net during connection and used for being matched with the contraction rope to tighten the catching net during disengaging. The net capturing type unmanned aerial vehicle countering device has the advantages of being simple in structure, high in capturing and net surfing success rate and capable of being stably carried and recycled.

The invention relates to the field of missile interception, and particularly discloses a guidance and control integrated design method considering flight state constraints, which comprises the following steps: S1, establishing a three-dimensional guidance and control integrated model; s2, designing an algorithm for striking or intercepting a maneuvering target at an expected angle based on the model in S1; s3, designing a guidance control algorithm under a state constraint based on the algorithm in S2, and establishing a six-degree-of-freedom guidance and control integrated model according to the kinematic model, the kinetic model and the three-dimensional missile-target relative kinematic model of the aircraft, so as to avoid the influence of inconsistent time constants of the inner and outer ring kinetic models on guidance efficiency, and improve the guidance performance of the aircraft. According to the scheme, flight condition constraints such as the flight attack angle and the attitude angle rate are considered, a state-considered constraint guidance and control integrated method is designed based on the safety constraint control theory, and the flight safety and stability of the interception missile are effectively improved.

The invention provides an unmanned aerial vehicle countering method, which comprises the following steps of: acquiring a radar signal containing an unmanned aerial vehicle reflection signal in a target airspace through a radar detection module, obtaining an unmanned aerial vehicle motion feature through feature extraction, and inputting the unmanned aerial vehicle motion feature into a threat judgment model to determine a threat level. And if the active interception condition is met, controlling the radio interference module to transmit a directional interference beam and activate the physical interception module, and analyzing an interference efficiency parameter to generate a dynamic interception instruction. And finally, combining the target airspace coordinate, the threat level and the interception instruction into a countering control instruction, and sending the countering control instruction to a physical interception module to complete interception. According to the invention, automatic and accurate countering of the urban low-altitude unmanned aerial vehicle can be realized, and the response speed and interception reliability of a security and protection system are improved.

The invention discloses an anti-unmanned aerial vehicle defense system based on electromagnetic pulses and a defense method thereof, and relates to the technical field of unmanned aerial vehicle defense. The position information, the signal characteristics and the thermal imaging information of the unmanned aerial vehicle are acquired and comprehensively evaluated, so that a three-dimensional threat evaluation system is constructed, multi-dimensional parameters are weighted and calculated into the threat evaluation index, the threat evaluation index is matched with the preset index set to determine the threat level, different threat scenes can be dynamically responded, and the threat evaluation accuracy is improved. The problem that in the prior art, the threat level cannot be automatically evaluated according to dynamic parameters such as the speed, the flight path and the load type of the unmanned aerial vehicle, and overreaction or defense vulnerabilities are likely to occur is solved.