A method for detecting and warning UAV signals based on dynamic knowledge base update

Abstract

This application relates to a method for detecting and warning of drone signals based on dynamic knowledge base update, belonging to the technical field of drone signal detection. Through steps such as signal acquisition and detection, signal extraction, feature extraction, feature comparison and entry update, and warning trigger, this application realizes the efficient detection and warning of drone signals. Among them, feature comparison and entry update can realize the dynamic update of the knowledge base, improve the detection ability of the device for new or modified drones. Moreover, internally, advanced algorithms are used to extract features, and the extracted feature parameters are compared with the records in the knowledge base in real time to automatically achieve the effect of warning activities.

Description

Technical Field

[0001] This application relates to the technical field of UAV detection, and in particular to a UAV signal detection and warning method based on dynamic knowledge base update. Background Art

[0002] Currently, UAVs are generally detected by radio spectrum monitoring systems. However, the currently used radio spectrum monitoring systems have the following problems:

[0003] 1. Prior knowledge dependence defect: It can only identify the UAV models pre-stored in the knowledge base, and there is a detection blind spot for modified UAVs using new communication modules (such as replacing the SDR module or customizing the protocol stack).

[0004] 2. Insufficient adaptability to dynamic environments: It is unable to autonomously perceive the time-varying frequency spectrum characteristics of unregistered UAV signals (such as bursty frequency hopping, adaptive modulation coding).

[0005] 3. Lack of incremental learning mechanism: Traditional static knowledge base updates require manual intervention and cannot achieve self-organization of unknown signal characteristics at the field level into the library and model iteration.

[0006] 4. Small detection range of detection equipment: The detection range of traditional radar detectors is relatively small and cannot meet the acquisition of UAV electromagnetic wave signals over a large range. At the same time, its detection angle adjustability is poor.

[0007] Therefore, a UAV signal detection and warning method based on dynamic knowledge base update is proposed to efficiently and intelligently achieve UAV detection activities and update the knowledge base in real time to conform to the development track of UAV technology. Summary of the Invention

[0008] The purpose of this application is to provide a UAV signal detection and warning method based on dynamic knowledge base update to solve the problems raised in the above background art.

[0009] A UAV signal detection and warning method based on dynamic knowledge base update provided by this application adopts the following technical solutions: including the following steps:

[0010] S1. Signal detection and acquisition: Use the set detection equipment to detect and acquire UAV signals in real time.

[0011] S2. Signal extraction: From the collected electromagnetic wave signals, extract the electromagnetic signals that conform to the characteristics of UAV communication signals through signal processing algorithms.

[0012] S3. Feature extraction: Further process the extracted UAV communication signals and extract various characteristic parameters of the signals, such as frequency, modulation method, signal strength, time domain characteristics, etc.

[0013] S4, Feature comparison and database update: Compare the extracted signal features with the known UAV signal features in the dynamic knowledge base. At the same time, the dynamic knowledge base is updated regularly, and the latest UAV signal features are added to the knowledge base.

[0014] S5, Alarm trigger: The updated knowledge base can identify new UAV signals in real time and send a warning to the operator through an alarm device when such a signal is detected.

[0015] By adopting the above technical solution, that is, through the above method, the dynamic update of the UAV knowledge base can be satisfied, the knowledge base can be updated in real time, the detection ability of the device for new or modified UAVs can be improved. At the same time, real-time adaptive signal processing and feature comparison are carried out to quickly extract UAV signals and compare their features, and an alarm activity is automatically carried out based on the comparison results.

[0016] Preferably, the detection device includes;

[0017] A radar detector for collecting and receiving signals;

[0018] A signal amplifier for amplifying weak signals to ensure the accuracy of signal detection;

[0019] A digital signal processing unit for preprocessing and feature extraction of the received signals,

[0020] By adopting the above technical solution, that is, with the combination of devices such as a radar detector, a signal amplifier and a digital signal processing unit, the composition of an advanced analysis and processing system for UAV signals can be realized, so as to quickly analyze UAV electromagnetic wave signals and realize the rapid and efficient extraction of characteristic parameters such as the internal frequency, modulation mode, signal strength, and time-domain characteristics of UAV communication signals.

[0021] Preferably, in step S2, the extraction of electromagnetic signals is realized by using one or a combination of signal processing algorithms in spectrum analysis or time-frequency analysis.

[0022] By adopting the above technical solution, that is, in cooperation with advanced signal processing algorithms in spectrum analysis or time-frequency analysis, UAV communication signals can be efficiently extracted, and the problems of noise and interference can be reduced.

[0023] Preferably, the update method of the dynamic knowledge base in step S4 includes;

[0024] S41, Regularly obtain the latest UAV signal feature data from UAV manufacturers or relevant institutions;

[0025] S42, Analyze the detected unknown signals through machine learning algorithms and automatically update the knowledge base;

[0026] S43. Allow the operator to manually add or modify the signal features in the knowledge base.

[0027] By adopting the above technical solution, that is, the dynamic knowledge base can continuously update the internal UAV signal features, so that when subsequent signal comparison is performed, the corresponding features can be found to quickly determine the UAV type and determine whether an alarm activity needs to be carried out.

[0028] Preferably, the alarm devices in step S5 include but are not limited to high - pitched speakers, warning lights, smart phones and computer terminals, and the alarm triggering methods include but are not limited to sound alarms, light alarms, text message alarms and email alarms.

[0029] By adopting the above technical solution, that is, there are many alarm methods, and timely responses can be made according to the detection results to ensure the alarm response speed.

[0030] Preferably, the radar detector in step S1 includes a base, a surrounding frame, a solar panel, a motor, a turntable, a wireless detection radar, a bearing tray and a detection enhancement device. A surrounding frame is provided at the upper end of the base. Solar panels are installed on both sides of the surrounding frame. A motor is installed inside the surrounding frame. The top output end of the motor is butted against a turntable. A wireless detection radar is installed on the upper end of the turntable. The top of the wireless detection radar is connected to the bearing tray. The upper end of the bearing tray is connected to the detection enhancement device, and both sides of the bottom of the detection enhancement device are fixed to the surrounding frame.

[0031] By adopting the above technical solution, that is, the composed radar detector is used to detect and obtain the UAV electromagnetic wave signal, and the detection enhancement device is used to significantly enhance the detection efficiency.

[0032] Preferably, the detection enhancement device includes a bracket, a main detection antenna, an adjustable detection component and a bearing bracket. The bracket is installed inside the surrounding frame. The main detection antenna is inserted in the middle of the bracket, and the bottom of the main detection antenna is connected to the upper end of the wireless detection radar. An adjustable detection component is installed at the upper end of the bracket. The upper end of the bracket is fixedly connected to the bearing bracket, and the bearing bracket is connected to the outside of the main detection antenna and the adjustable detection component.

[0033] By adopting the above technical solution, that is, the main detection antenna can be combined with the wireless detection radar to form a dual - detection structure, so as to efficiently collect the external UAV electromagnetic wave signal and improve the subsequent feature extraction and comparison efficiency.

[0034] Preferably, the adjustable detection component includes a transmission structure and a swing detection structure. The transmission structure is installed in the middle of the upper end of the bracket, and both sides of the transmission structure are connected to the lower ends of the swing detection structures. The middle of the transmission structure is butted against the outside of the main detection antenna.

[0035] Preferably, the transmission structure includes a driving disk, a clamping strip, a spring piece, a gear disk and a gear. The driving disk is installed at the middle of the upper end of the bracket, and the middle of the driving disk is connected to the outside of the main detection antenna. Clamping strips are clamped on both sides of the outer end of the driving disk. The clamping strips are rotatably connected to both sides inside the gear disk, and spring pieces are installed on the outer sides of the clamping strips. The gear disk is rotatably connected to the middle of the upper end of the bracket, and gears are meshed and connected to both sides of the gear disk. The upper ends of the gears are connected to the swing detection structure.

[0036] By adopting the above technical solution, that is, the swing detection structure connected to the upper ends of the two side gears can be driven by the transmission structure to achieve synchronous swing adjustment or reciprocating swing effect to meet the adjustment of the detection angle, thereby expanding the detection efficiency of the electromagnetic wave signal of the drone.

[0037] Preferably, the swing detection structure includes a rotating cylinder, a transmission groove, a docking shaft, a secondary detection antenna and a fixing block. The rotating cylinder is docked to the upper end of the gear. A transmission groove is formed on the outer side of the rotating cylinder. The docking shaft is embedded in the transmission groove. The secondary detection antenna is installed at the upper end of the outer side of the docking shaft, and both sides of the outer end of the docking shaft are rotatably docked with the fixing block. The lower end of the fixing block is fixedly connected to the bracket.

[0038] By adopting the above technical solution, that is, through the swing adjustment effect, it is used to assist in strengthening the detection range of the electromagnetic wave signal of the drone, and greatly improves the signal acquisition efficiency.

[0039] In summary, the present application includes at least one of the following beneficial technical effects:

[0040] 1. Through steps such as signal acquisition and detection, signal extraction, feature extraction, feature comparison and entry update, and alarm triggering, the present application realizes the efficient detection and alarm of drone signals. Among them, feature comparison and entry update can realize the dynamic update of the knowledge base, improve the detection ability of the device for new or modified drones, and internally extract features through advanced algorithms, and compare the extracted feature parameters with the records in the knowledge base in real time to automatically carry out alarm activities;

[0041] 2. A radar detector is also provided in the present application to efficiently collect and obtain external drone electromagnetic wave signals, accelerate subsequent feature extraction entries and alarm activities, and a detection enhancement device is provided inside the radar detector, that is, to assist in detection cooperation, improve the signal acquisition rate, and further improve the efficiency of subsequent activities;

[0042] 3. In this application, an adjustable detection component and a swing detection structure are provided. That is, when the main detection antenna rotates synchronously with the wireless detection radar, the synchronous rotation of the externally connected drive disk can be achieved. When the drive disk rotates in the reverse direction, it will push against the clamping strips provided on both outer ends, causing the clamping strips to drive the synchronous rotation of the gear disk. In this way, as the gear disk rotates, the gears meshing with both sides of the gear disk will rotate synchronously and drive the rotation of the upper connecting rotating cylinder. When the two rotating cylinders on both sides rotate simultaneously, the secondary detection antenna connected to the transmission groove opened inside the rotating cylinder through the docking shaft will achieve swing adjustment detection and reciprocating swing detection activities. In this way, in cooperation with the main detection antenna, the electromagnetic wave signal collection range and efficiency of the external drone can be significantly enhanced. Description of the Drawings

[0043] Figure 1 is the overall process schematic diagram of this application;

[0044] Figure 2 is the schematic diagram of the feature comparison and warehousing update process;

[0045] Figure 3 is the schematic diagram of the radar detector structure of this application;

[0046] Figure 4 is the schematic diagram of the detection enhancement device structure of this application;

[0047] Figure 5 is the schematic diagram of the combined structure of the adjustable detection component and the swing detection structure of this application;

[0048] Figure 6 is the schematic diagram of the adjustable detection component structure of this application;

[0049] Figure 7 is the schematic diagram of the swing detection structure of this application;

[0050] Figure 8 is this application Figure 7 The enlarged structure schematic diagram at position A.

[0051] Description of the reference numerals: 1, base; 2, enclosure; 3, solar panel; 4, motor; 5, turntable; 6, wireless detection radar; 7, bearing tray; 8, detection enhancement device; 81, bracket; 82, main detection antenna; 83, adjustable detection component; 831, transmission structure; 831, drive disk; 8312, clamping strip; 8313, spring piece; 8314, gear disk; 8315, gear; 832, swing detection structure; 8321, rotating cylinder; 8322, transmission groove; 8323, docking shaft; 8324, secondary detection antenna; 8325, fixed block; 84, bearing bracket. Detailed Implementation Modes

[0052] The following is combined with the attached Figure 1- Appendix Figure 8 , the present application will be further described in detail below.

[0053] A method for detecting and warning of UAV signals based on dynamic knowledge base update, referring to Figure 1 , includes the following steps:

[0054] S1. Signal detection and acquisition: Use the set detection device to detect and collect UAV signals in real time;

[0055] S2. Signal extraction: Extract electromagnetic signals that conform to the characteristics of UAV communication signals from the collected electromagnetic wave signals through signal processing algorithms;

[0056] S3. Feature extraction: Further process the extracted UAV communication signals to extract various characteristic parameters of the signals, such as frequency, modulation method, signal strength, time domain characteristics, etc.;

[0057] S4. Feature comparison and knowledge base update: Compare the extracted signal features with the known UAV signal features in the dynamic knowledge base. At the same time, the dynamic knowledge base is updated regularly, and the latest UAV signal features are added to the knowledge base;

[0058] S5. Alarm trigger: The updated knowledge base can identify new UAV signals in real time, and when such signals are detected, a warning is sent to the operator through the alarm device.

[0059] Specifically, through the above method, the dynamic update of the UAV knowledge base can be satisfied, the knowledge base can be updated in real time, the detection ability of the device for new or modified UAVs can be improved. At the same time, real-time adaptive signal processing and feature comparison are carried out to quickly extract UAV signals, and feature comparison is performed. Through the comparison results, alarm activities are automatically carried out.

[0060] Among them, the detection device includes;

[0061] A radar detector for signal acquisition and reception;

[0062] A signal amplifier for amplifying weak signals to ensure the accuracy of signal detection;

[0063] A digital signal processing unit for preprocessing and feature extraction of the received signals,

[0064] Specifically, through the combination of devices such as radar detectors, signal amplifiers and digital signal processing units, the composition of an advanced analysis and processing system for UAV signals can be realized, so as to quickly analyze UAV electromagnetic wave signals and realize the rapid and efficient extraction of characteristic parameters such as internal frequency, modulation method, signal strength, and time domain characteristics of UAV communication signals.

[0065] Among them, in step S2, the extraction of electromagnetic signals is implemented by using one or a combination of signal processing algorithms in spectrum analysis or time-frequency analysis.

[0066] Specifically, that is, in cooperation with advanced signal processing algorithms in spectrum analysis or time-frequency analysis, the UAV communication signals are efficiently extracted, and the problems of noise and interference are reduced.

[0067] Among them, see Figure 2 , the update methods of the dynamic knowledge base in step S4 include;

[0068] S41. Regularly obtain the latest UAV signal feature data from UAV manufacturers or relevant institutions;

[0069] S42. Analyze the detected unknown signals through machine learning algorithms and automatically update the knowledge base;

[0070] S43. Allow operators to manually add or modify the signal features in the knowledge base,

[0071] Specifically, that is, the dynamic knowledge base can continuously update the internal UAV signal features, so that when subsequent signal comparison is performed, the corresponding features can be found to quickly determine the UAV type and determine whether an alarm activity needs to be carried out.

[0072] Among them, the alarm devices in step S5 include but are not limited to high-pitched speakers, warning lights, smart phones and computer terminals, and the alarm trigger methods include but are not limited to sound alarms, light alarms, text message alarms and email alarms.

[0073] Specifically, that is, there are many alarm methods, and corresponding actions can be taken in a timely manner according to the detection results to ensure the alarm response speed.

[0074] On the other hand, see Figure 3 , the radar detector in this method includes a base 1, a surrounding frame 2, a solar panel 3, a motor 4, a turntable 5, a wireless detection radar 6, a bearing tray 7 and a detection enhancement device 8. A surrounding frame 2 is arranged at the upper end of the base 1. Solar panels 3 are installed on both sides of the surrounding frame 2. A motor 4 is installed inside the surrounding frame 2. The top output end of the motor 4 is butted against a turntable 5. A wireless detection radar 6 is installed on the upper end of the turntable 5. The top of the wireless detection radar 6 is connected to the bearing tray 7. The upper end of the bearing tray 7 is connected to the detection enhancement device 8, and both sides of the bottom of the detection enhancement device 8 are fixed to the surrounding frame 2.

[0075] Specifically, that is, through the composed radar detector, the UAV electromagnetic wave signals are detected and obtained, and through the detection enhancement device 8, the detection efficiency is significantly enhanced.

[0076] Specifically, when detecting electromagnetic wave signals of drones, the radar detector can be placed in the detection position in advance. At this time, the wireless detection radar 6 provided at the upper end of the turntable 5 is operated to enable the wireless detection radar 6 to collect external electromagnetic wave signals, and the collected signals will be transmitted to the external data processing unit to realize the preprocessing or feature pre-extraction of the electromagnetic wave signals of drones, so as to enhance the efficiency of feature extraction by subsequent advanced algorithms. Secondly, during the detection process of the wireless detection radar 6, the motor 4 provided at the upper end of the enclosure 2 can be operated to enable the motor 4 to realize the rotation of the turntable 5 connected to the top output end. As the turntable 5 rotates, the wireless detection radar 6 installed at the upper end of the turntable 5 can rotate accordingly to realize all-round detection activities. In order to ensure the long-term detection of the wireless detection radar 6, solar panels 3 are installed on the left and right sides of the enclosure 2 to realize efficient power support activities.

[0077] Among them, see Figure 4 and Figure 5 The detection enhancement device 8 includes a bracket 81, a main detection antenna 82, an adjustable detection component 83 and a support bracket 84. The bracket 81 is installed inside the frame 2 to achieve stable support and cooperation. The main detection antenna 82 is plugged into the middle of the bracket 81, and the bottom of the main detection antenna 82 is connected to the upper end of the wireless detection radar 6. In this way, when the wireless detection radar 6 rotates with the motor 4 for detection, the rotation detection drive of the main detection antenna 82 can be synchronously realized. The upper end of the bracket 81 is installed with an adjustable detection component 83. The upper end of the bracket 81 is fixedly connected with a support bracket 84, and the left and right sides of the support bracket 84 are integrally provided with transverse hollow grooves to achieve the formation of a certain avoidance space. The support bracket 84 is connected to the outer side of the main detection antenna 82 and the adjustable detection component 83.

[0078] Specifically, the main detection antenna 82 can be combined with the wireless detection radar 6 to form a dual detection structure, so that it can efficiently collect the electromagnetic wave signals of external drones and improve the efficiency of subsequent feature extraction and comparison.

[0079] Specifically, in order to improve the detection and collection effect of external drone electromagnetic wave signals, a main detection antenna 82 is set to strengthen the detection position, so as to assist in the auxiliary detection and acquisition of drone electromagnetic wave signals. At the same time, the main detection antenna 82 can also rotate synchronously with the wireless detection radar 6 when performing rotating detection activities, so as to further improve the auxiliary detection range and efficiency.

[0080] Among them, see Figure 6 The adjustable detection component 83 includes a transmission structure 831 and a swing detection structure 832. The transmission structure 831 is installed in the middle of the upper end of the bracket 81, and both sides of the transmission structure 831 are connected to the lower end of the swing detection structure 832. The middle of the transmission structure 831 is connected to the outer side of the main detection antenna 82.

[0081] Among them, the transmission structure 831 includes a driving disk 8311, a clamping strip 8312, a spring piece 8313, a gear disk 8314 and a gear 8315. The driving disk 8311 is installed in the middle of the upper end of the bracket 81, and the middle of the driving disk 8311 is connected to the outside of the main detection antenna 82. In this way, when the main detection antenna 82 rotates, the rotation drive of the driving disk 8311 can be realized synchronously. Moreover, the driving disk 8311 is integrally arranged in a ratchet shape to meet the subsequent reverse adjustment transmission cooperation. The clamping strips 8312 are clamped on both outer ends of the driving disk 8311, and the two clamping strips 8312 are respectively rotatably connected to the left and right sides inside the gear disk 8314, and the installation directions of the two clamping strips 8312 are opposite. The spring pieces 8313 are installed on the outer ends of the two clamping strips 8312, and the side of the spring piece 8313 away from the clamping strip 8312 is fixedly connected to the inside of the gear disk 8314. The gear disk 8314 is rotatably connected to the middle of the upper end of the bracket 81, and the two gears 8315 are meshed with the left and right sides of the gear disk 8314, and the rotation directions of the two gears 8315 are the same. The upper ends of the two gears 8315 are connected to the swing detection structure 832.

[0082] Specifically, the swing detection structure 832 connected to the upper ends of the two gears 8315 can be driven by the transmission structure 831 to realize synchronous swing adjustment or reciprocating swing effect to meet the adjustment of the detection angle, so as to expand the detection efficiency of the electromagnetic wave signal of the drone.

[0083] Among them, see Figure 7 and Figure 8 , the swing detection structure 832 includes a rotating cylinder 8321, a transmission groove 8322, a docking shaft 8323, a secondary detection antenna 8324 and a fixing block 8325. The rotating cylinder 8321 is docked to the upper ends of the two gears 8315. Transmission grooves 8322 are opened at the outer ends of the middles of the two rotating cylinders 8321, and the shapes of the transmission grooves 8322 opened on both sides are the same to meet the subsequent reciprocating swing or swing adjustment activities. The docking shaft 8323 is horizontally embedded in the transmission groove 8322. The secondary detection antenna 8324 for assisting detection cooperation is installed at the upper end of the outer side of the docking shaft 8323, and the two outer ends of the docking shaft 8323 are rotatably docked with the fixing block 8325. The lower end of the fixing block 8325 is fixedly connected to the bracket 81.

[0084] Among them, the length of the secondary detection antenna 8324 provided on the left side is longer than that of the secondary detection antenna 8324 provided on the right side, and the height of the fixing block 8325 provided on the left side is lower than that of the fixing block 8325 provided on the right side. In this way, while meeting the synchronous reciprocating swing process of the two secondary detection antennas 8324.

[0085] Specifically, through the swing adjustment effect, it is used to assist in strengthening the detection range of the electromagnetic wave signal of the drone and greatly improving the signal acquisition efficiency.

[0086] Specifically, when the main detection antenna 82 conducts auxiliary detection activities, by swinging the secondary detection antenna 8324 provided inside the detection structure 832, the detection and acquisition effect of the main detection antenna 82 can be further expanded, achieving rapid acquisition of the electromagnetic wave signals of the UAV. If it is necessary to adjust the detection angle of the secondary detection antenna 8324 to meet the acquisition activities of electromagnetic wave signals at different positions, the motor 4 can be used to reverse the turntable 5. Thus, the wireless detection radar 6 will synchronously reverse the main detection antenna 82. In this way, the drive disk 8311 connected to the outside of the main detection antenna 82 will reverse accordingly. Since the drive disk 8311 is integrally arranged in a ratchet shape, when the drive disk 8311 reverses, its external tooth angles will push against the latch bars 8312 provided on the left and right sides. Thus, the gear disk 8314 provided at the lower end of the drive disk 8311 and rotatably installed in the middle of the upper end of the bracket 81 will reverse synchronously. With the reverse rotation of the gear disk 8314, the gears 8315 meshed on the left and right sides of the gear disk 8314 can rotate simultaneously to achieve synchronous rotation of the upper connected rotating cylinder 8321;

[0087] When the two rotating cylinders 8321 rotate simultaneously, through the rotational transmission of the transmission grooves 8322 opened in the middle of the two rotating cylinders 8321, the docking shaft 8323 embedded in the transmission grooves 8322 can drive the secondary detection antenna 8324 connected to the upper end to perform a swinging adjustment activity with the support and cooperation of the externally connected fixing block 8325. Thus, the swinging adjustment of the detection angle of the secondary detection antenna 8324 can be quickly realized, enabling it to flexibly adjust the detection position, greatly enhancing the auxiliary activity of the external UAV electromagnetic wave signals, and accelerating the signal acquisition efficiency;

[0088] Secondly, when the two gears 8315 rotate continuously, the two rotating cylinders 8321 can rotate synchronously and continuously. In this way, the two secondary detection antennas 8324 will achieve a reciprocating swinging detection effect through the cyclic transmission and cooperation of the corresponding docking shafts 8323 and the transmission grooves 8322. Moreover, the reciprocating swinging detection activities of the two secondary detection antennas 8324 can be carried out simultaneously with the reverse rotation detection activities of the main detection antenna 82 and the wireless detection radar 6. Thus, the acquisition of external UAV electromagnetic wave signals can be significantly enhanced, the subsequent feature extraction, feature entry, feature comparison, and alarm rates can be improved, and the response effect of the system can be further enhanced;

[0089] When there is no need to perform the adjustment detection and reciprocating swing detection activities of the two side auxiliary detection antennas 8324, only the driving motor 4 needs to be driven to achieve the forward rotation of the wireless detection radar 6 and the main detection antenna 82. In this way, the driving disk 8311 that rotates simultaneously with the main detection antenna 82 will not push against the two side clamping strips 8312, that is, the overall gear disk 8314 is in a static state. Therefore, the two side auxiliary detection antennas 8324 can be synchronously static to adapt to different detection situations.

[0090] The embodiments of this specific implementation manner are all preferred embodiments of this application, and do not limit the protection scope of this application accordingly. The same components are represented by the same reference numerals. Therefore, all equivalent changes made according to the structure, shape, and principle of this application should be covered within the protection scope of this application.

Claims

1. A drone signal detection and warning method based on dynamic knowledge base update, characterized in that: The steps include: S1. Signal detection and collection: Use the set detection equipment to detect and collect drone signals in real time; S2. Signal extraction: Extract electromagnetic signals that meet the characteristics of drone communication signals from the collected electromagnetic wave signals through signal processing algorithms; S3, feature extraction: further processing the extracted UAV communication signal to extract various characteristic parameters of the signal; S4, feature comparison and database update: The extracted signal features are compared with the known drone signal features in the dynamic knowledge base. At the same time, the dynamic knowledge base is regularly updated to add the latest drone signal features to the knowledge base; S5. Alarm triggering: The updated knowledge base can identify new drone signals in real time and warn the operator through the alarm device when the signal is detected; The radar detector in step S1 comprises a base (1), a frame (2), a solar panel (3), a motor (4), a turntable (5), a wireless detection radar (6), a support tray (7) and a detection enhancement device (8), wherein the top of the wireless detection radar (6) is connected to the support tray (7), and the upper end of the support tray (7) is connected to the detection enhancement device (8); The detection enhancement device (8) comprises a bracket (81), a main detection antenna (82), an adjustable detection component (83) and a support bracket (84); the main detection antenna (82) is plugged into the middle of the bracket (81), and the bottom of the main detection antenna (82) is connected to the upper end of the wireless detection radar (6); the upper end of the bracket (81) is equipped with an adjustable detection component (83); the upper end of the bracket (81) is fixedly connected with the support bracket (84), and the support bracket (84) is connected to the main detection antenna (82) and the outer side of the adjustable detection component (83); The adjustable detection assembly (83) comprises a transmission structure (831) and a swing detection structure (832). The transmission structure (831) is installed at the middle of the upper end of the bracket (81), and both sides of the transmission structure (831) are connected to the lower end of the swing detection structure (832), and the middle of the transmission structure (831) is connected to the outer side of the main detection antenna (82).

2. A method for detecting and warning drone signals based on dynamic knowledge base update according to claim 1, characterized in that: Detection equipment includes; Radar detector, used for signal collection and reception; Signal amplifier, used to amplify weak signals to ensure the accuracy of signal detection; The digital signal processing unit is used to pre-process and extract features of the received signal.

3. A method for detecting and warning drone signals based on dynamic knowledge base update according to claim 1, characterized in that: The extraction of electromagnetic signals in step S2 is implemented by using a signal processing algorithm that combines one or more of spectrum analysis or time-frequency analysis.

4. A method for detecting and warning drone signals based on dynamic knowledge base update according to claim 1, characterized in that: The updating method of the dynamic knowledge base in step S4 includes: S41. Regularly obtain the latest drone signal characteristic data from drone manufacturers or relevant institutions; S42, analyzing the detected unknown signals through machine learning algorithms and automatically updating the knowledge base; S43. Allow the operator to manually add or modify signal features in the knowledge base.

5. A method for detecting and warning drone signals based on dynamic knowledge base update according to claim 1, characterized in that: The alarm devices in step S5 include tweeters, warning lights, smart phones and computer terminals, and the alarm triggering methods include sound alarms, light alarms, text message alarms and email alarms.

6. A method for detecting and warning drone signals based on dynamic knowledge base update according to claim 1, characterized in that: A frame (2) is arranged at the upper end of the base (1), solar panels (3) are installed on both sides of the frame (2), a motor (4) is installed inside the frame (2), a turntable (5) is connected to the output end of the top of the motor (4), a wireless detection radar (6) is installed on the upper end of the turntable (5), and the two sides of the bottom of the detection enhancement device (8) are fixed to the frame (2), and a bracket (81) is installed inside the frame (2).

7. A method for detecting and warning drone signals based on dynamic knowledge base update according to claim 6, characterized in that: The transmission structure (831) comprises a driving disk (8311), a clamping strip (8312), a spring sheet (8313), a gear disk (8314) and a gear (8315). The driving disk (8311) is mounted on the middle part of the upper end of the bracket (81), and the middle part of the driving disk (8311) is connected to the outer side of the main detection antenna (82). The clamping strips (8312) are clamped on both sides of the outer end of the driving disk (8311), and the clamping strips (8312) are rotatably connected to the inner sides of the gear disk (8314), and the outer side of the clamping strip (8312) is equipped with a spring sheet (8313), the gear disk (8314) is rotatably connected to the middle part of the upper end of the bracket (81), and the gears (8315) are meshed and connected on both sides of the gear disk (8314), and the upper end of the gear (8315) is connected to the swing detection structure (832).

8. According to a method for detecting and warning unmanned aerial vehicle signals based on dynamic knowledge base updating of claim 7, the swing detection structure (832) comprises a rotating drum (8321), a transmission groove (8322), a docking shaft (8323), an auxiliary detection antenna (8324) and a fixed block (8325), the rotating drum (8321) is docked at the upper end of the gear (8315), a transmission groove (8322) is provided on the outer side of the rotating drum (8321), a docking shaft (8323) is embedded in the transmission groove (8322), an auxiliary detection antenna (8324) is installed at the upper end of the outer side of the docking shaft (8323), and both sides of the outer end of the docking shaft (8323) are rotatably docked with the fixed block (8325), and the lower end of the fixed block (8325) is fixedly connected to the bracket (81).

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