Unmanned aerial vehicle signal detection and alarm method based on dynamic knowledge base updating

Abstract

The invention relates to an unmanned aerial vehicle signal detection and alarm method based on dynamic knowledge base updating, relates to the technical field of unmanned aerial vehicle signal detection, and realizes efficient detection and alarm of unmanned aerial vehicle signals through the steps of signal acquisition and detection, signal extraction, feature extraction, feature comparison and entrance updating, alarm triggering and the like. Dynamic updating of the knowledge base can be achieved through feature comparison and entry updating, the detection capacity of the device for the novel or modified unmanned aerial vehicle is improved, feature extraction is achieved through an advanced algorithm inside, and the extracted feature parameters and records in the knowledge base are compared in real time to achieve the effect of automatic alarm activity.

Description

Technical Field

[0001] The present application relates to the field of drone detection technology, and in particular to a drone signal detection and alarm method based on dynamic knowledge base update. Background Art

[0002] Nowadays, drones are generally detected through radio spectrum monitoring systems, but the radio spectrum monitoring systems currently used have the following problems: 1. Defect of reliance on prior knowledge: It can only identify the drone models pre-stored in the knowledge base, and has a detection blind spot for modified drones with new communication modules (such as replacing SDR modules or custom protocol stacks); 2. Insufficient adaptability to dynamic environments: Unable to autonomously perceive the time-varying spectrum characteristics of unregistered drone signals (such as burst frequency hopping and adaptive modulation coding); 3. Lack of incremental learning mechanism: Traditional static knowledge base updates require manual intervention, and cannot achieve self-organized storage and model iteration of unknown signal features at the field level; 4. The detection range of the detection equipment is small: The detection range of traditional radar detectors cannot meet the needs of collecting and acquiring electromagnetic wave signals of large-scale drones. At the same time, its detection angle adjustability is poor.

[0003] To this end, a UAV signal detection and alarm method based on dynamic knowledge base update is proposed to realize the detection activities of UAVs efficiently and intelligently, and update the knowledge base in real time to conform to the development trajectory of UAV technology. Summary of the invention

[0004] The purpose of this application is to provide a drone signal detection and warning method based on dynamic knowledge base update to solve the problems raised by the above background technology.

[0005] The present application provides a method for detecting and warning drone signals based on a dynamic knowledge base update, which adopts the following technical solution: comprising the following steps: 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 process the extracted UAV communication signal to extract various characteristic parameters of the signal, such as frequency, modulation mode, signal strength, time domain characteristics, etc.; 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 into 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.

[0006] By adopting the above technical solution, that is, by the above method, the dynamic update of the drone knowledge base can be met, the knowledge base can be updated in real time, and the equipment's detection capability for new or modified drones can be improved. At the same time, real-time adaptive signal processing and feature comparison can be used to quickly extract drone signals and perform feature comparison, and automatic alarm activities can be carried out based on the comparison results.

[0007] Preferably, the detection device comprises: Radar detector, used for signal collection and reception; Signal amplifier, used to amplify weak signals to ensure the accuracy of signal detection; Digital signal processing unit, used for preprocessing and feature extraction of received signals, By adopting the above-mentioned technical solution, that is, the combination of radar detectors, signal amplifiers, digital signal processing units and other equipment, the composition of the advanced analysis and processing system for UAV signals can be realized to quickly analyze the electromagnetic wave signals of UAVs and realize the rapid and efficient extraction of characteristic parameters such as the internal frequency, modulation method, signal strength, and time domain characteristics of UAV communication signals.

[0008] Preferably, 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.

[0009] By adopting the above-mentioned technical solution, that is, in conjunction with advanced signal processing algorithms in spectrum analysis or time-frequency analysis, drone communication signals can be efficiently extracted and noise and interference problems can be reduced.

[0010] Preferably, 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, allowing operators to manually add or modify signal features in the knowledge base, By adopting the above technical solution, the dynamic knowledge base can continuously update the internal drone signal characteristics, so that in subsequent signal comparisons, the corresponding characteristics can be found to quickly determine the type of drone and whether an alarm activity is required.

[0011] Preferably, the alarm devices in step S5 include but are not limited to tweeters, warning lights, smart phones and computer terminals, and the alarm triggering methods include but are not limited to sound alarms, light alarms, SMS alarms and email alarms.

[0012] By adopting the above technical solution, there are many alarm methods, and timely responses can be made according to the detection results to ensure the alarm response speed.

[0013] Preferably, the radar detector in step S1 includes a base, a frame, a solar panel, a motor, a turntable, a wireless detection radar, a supporting tray and a detection enhancement device, wherein a frame is provided on the upper end of the base, solar panels are installed on both sides of the frame, a motor is installed inside the frame, a turntable is connected to the top output end of the motor, a wireless detection radar is installed on the upper end of the turntable, the top of the wireless detection radar is connected to the supporting tray, the upper end of the supporting tray is connected to the detection enhancement device, and the two sides of the bottom of the detection enhancement device are fixed to the frame.

[0014] By adopting the above technical solution, that is, through the constructed radar detector, the electromagnetic wave signal of the drone is detected and acquired, and the detection efficiency is significantly enhanced through the detection enhancement device.

[0015] Preferably, the detection enhancement device includes a bracket, a main detection antenna, an adjustable detection component and a supporting bracket, the bracket is installed inside the frame, the main detection antenna is plugged into the middle of the bracket, and the bottom of the main detection antenna is connected to the upper end of the wireless detection radar, the adjustable detection component is installed on the upper end of the bracket, the upper end of the bracket is fixedly connected to the supporting bracket, and the supporting bracket is connected to the main detection antenna and the outer side of the adjustable detection component.

[0016] By adopting the above technical solution, the main detection antenna can be combined with the wireless detection radar to form a dual detection structure, which can efficiently realize the collection of external drone electromagnetic wave signals and improve the subsequent feature extraction and comparison efficiency.

[0017] 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 end of the swing detection structure, and the middle of the transmission structure is connected to the outer side of the main detection antenna.

[0018] Preferably, the transmission structure includes a driving plate, a clamping strip, a spring sheet, a gear plate and a gear. The driving plate is installed at the middle part of the upper end of the bracket, and the middle part of the driving plate is connected to the outer side of the main detection antenna. The outer sides of the driving plate are clamped with clamping strips, and the clamping strip is rotatably connected to the inner sides of the gear plate, and a spring sheet is installed on the outer side of the clamping strip. The gear plate is rotatably connected to the middle part of the upper end of the bracket, and gears are meshed and connected on both sides of the gear plate, and the upper end of the gear is connected to the swing detection structure.

[0019] By adopting the above-mentioned technical solution, that is, the swing detection structure connected to the upper ends of the gears on both sides 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.

[0020] Preferably, the swing detection structure includes a rotating drum, a transmission groove, a docking shaft, an auxiliary detection antenna and a fixed block, the rotating drum is docked to the upper end of the gear, a transmission groove is opened on the outside of the rotating drum, a docking shaft is embedded in the transmission groove, an auxiliary detection antenna is installed on 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 fixed block, and the lower end of the fixed block is fixedly connected to the bracket.

[0021] By adopting the above technical solution, that is, through the swing adjustment effect, the detection range of the UAV electromagnetic wave signal can be assisted to enhance the signal acquisition efficiency.

[0022] In summary, the present application includes at least one of the following beneficial technical effects: 1. This application realizes efficient detection and alarm of drone signals through signal collection and detection, signal extraction, feature extraction, feature comparison and entry update, and alarm triggering. Among them, feature comparison and entry update can realize dynamic update of the knowledge base, improve the detection ability of the equipment for new or modified drones, and realize feature extraction through advanced algorithms internally, and compare the extracted feature parameters with the records in the knowledge base in real time to automatically perform alarm activities; 2. A radar detector is also provided in this application to efficiently collect and acquire electromagnetic wave signals of external drones, speed up subsequent feature extraction entry and warning activities, and a detection enhancement device is provided inside the radar detector, that is, to assist in detection and coordination, increase the signal acquisition rate, and further improve the efficiency of subsequent activities; 3. The present application provides an adjustable detection component and a swing detection structure, 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 realized. When the drive disk rotates in the opposite direction, it will push the clamping strips provided on both sides of the outer end against each other, so that the clamping strips can realize the synchronous rotation of the gear disk. As a result, as the gear disk rotates, the gears meshing with the gears on both sides of the gear disk will rotate synchronously and realize the rotation of the rotating drum connected to the upper end. When the rotating drums on both sides rotate at the same time, the auxiliary detection antenna connected to the transmission groove opened inside the rotating drum through the docking shaft will realize the swing adjustment detection and reciprocating swing detection activities. In this way, it cooperates with the main detection antenna to significantly enhance the external UAV electromagnetic wave signal collection range and efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 This is a schematic diagram of the overall process of this application; Figure 2It is a schematic diagram of the feature comparison and storage update process; Figure 3 It is a schematic diagram of the structure of the radar detector of this application; Figure 4 It is a schematic diagram of the structure of the detection enhancement device of the present application; Figure 5 It is a schematic diagram of the combined structure of the adjustable detection component and the swing detection structure of the present application; Figure 6 It is a schematic diagram of the structure of the adjustable detection component of the present application; Figure 7 It is a schematic diagram of the structure of the swing detection structure of the present application; Figure 8 This application Figure 7 Enlarged structural diagram at A in the middle.

[0024] Explanation of the accompanying drawings: 1. base; 2. frame; 3. solar panel; 4. motor; 5. turntable; 6. wireless detection radar; 7. supporting 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 sheet; 8314. gear disk; 8315. gear; 832. swing detection structure; 8321. rotating drum; 8322. transmission groove; 8323. docking shaft; 8324. auxiliary detection antenna; 8325. fixing block; 84. supporting bracket. DETAILED DESCRIPTION

[0025] The following is combined with Figure 1 -Attached Figure 8 , further details of this application are given.

[0026] A UAV signal detection and warning method based on dynamic knowledge base update, referring to Figure 1 , including the following steps: 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 process the extracted UAV communication signal to extract various characteristic parameters of the signal, such as frequency, modulation mode, signal strength, time domain characteristics, etc.; 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.

[0027] Specifically, the above method can meet the dynamic update of the drone knowledge base, update the knowledge base in real time, and enhance the equipment's detection capability for new or modified drones. At the same time, real-time adaptive signal processing and feature comparison can be used to quickly extract drone signals and perform feature comparison. Based on the comparison results, alarm activities can be automatically carried out.

[0028] Among them, the 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; Digital signal processing unit, used for preprocessing and feature extraction of received signals, Specifically, with the combination of radar detectors, signal amplifiers, digital signal processing units and other equipment, the composition of an advanced analysis and processing system for drone signals can be realized to quickly analyze the electromagnetic wave signals of drones and realize the rapid and efficient extraction of characteristic parameters such as the internal frequency, modulation method, signal strength, and time domain characteristics of drone communication signals.

[0029] 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.

[0030] Specifically, it is to cooperate with advanced signal processing algorithms in spectrum analysis or time-frequency analysis to efficiently extract drone communication signals and reduce noise and interference problems.

[0031] Among them, see Figure 2 , 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, allowing operators to manually add or modify signal features in the knowledge base, Specifically, the dynamic knowledge base can continuously update the internal drone signal features so that the corresponding features can be found during subsequent signal comparisons to quickly determine the type of drone and whether an alarm is required.

[0032] Among them, the alarm equipment in step S5 includes but is not limited to tweeters, 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.

[0033] Specifically, there are many alarm methods, and timely responses can be made based on the detection results to ensure the alarm response speed.

[0034] On the other hand, see Figure 3 The radar detector in the method includes a base 1, a frame 2, a solar panel 3, a motor 4, a turntable 5, a wireless detection radar 6, a tray 7 and a detection enhancement device 8. The base 1 is provided with a frame 2 on the upper end, and solar panels 3 are installed on both sides of the frame 2. The motor 4 is installed inside the frame 2. The top output end of the motor 4 is connected to the turntable 5. The upper end of the turntable 5 is provided with a wireless detection radar 6. The top of the wireless detection radar 6 is connected to the tray 7. The upper end of the tray 7 is connected to the detection enhancement device 8, and the two sides of the bottom of the detection enhancement device 8 are fixed to the frame 2.

[0035] Specifically, the electromagnetic wave signal of the drone is detected and acquired through the constructed radar detector, and the detection efficiency is significantly enhanced through the detection enhancement device 8.

[0036] 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.

[0037] 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.

[0038] 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.

[0039] 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.

[0040] 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.

[0041] The transmission structure 831 includes 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 installed in the middle of the upper end of the bracket 81, and the middle of the driving disk 8311 is connected to the outer side of the main detection antenna 82. In this way, when the main detection antenna 82 rotates, the rotation of the driving disk 8311 can be synchronously realized, and the driving disk 8311 is arranged in a ratchet shape as a whole to meet the subsequent reverse adjustment transmission cooperation. The outer ends of the driving disk 8311 are clamped with clamping strips 8312 on both sides, and the clamping strips 8312 on both sides are clamped. 2 are rotatably connected to the left and right sides of the gear plate 8314, and the installation directions of the clamping strips 8312 on both sides are in opposite states. The outer ends of the clamping strips 8312 on both sides are equipped with spring pieces 8313, and the side of the spring piece 8313 away from the clamping strip 8312 is fixedly connected to the gear plate 8314. The gear plate 8314 is rotatably connected to the middle part of the upper end of the bracket 81, and the left and right sides of the gear plate 8314 are meshed with gears 8315, and the rotation directions of the gears 8315 on both sides are in the same state. The upper ends of the gears 8315 on both sides are connected to the swing detection structure 832.

[0042] Specifically, the swing detection structure 832 connected to the upper ends of the gears 8315 on both sides can be driven by the transmission structure 831 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.

[0043] Among them, see Figure 7 and Figure 8The swing detection structure 832 includes 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 with the upper ends of the gears 8315 on both sides. Transmission grooves 8322 are opened at the middle outer ends of the rotating drums 8321 on both sides, and the shapes of the transmission grooves 8322 on both sides are consistent to meet the subsequent reciprocating swing or swing adjustment activities. A docking shaft 8323 is horizontally embedded in the transmission groove 8322, and an auxiliary detection antenna 8324 for auxiliary detection cooperation is installed on the upper end of the outer side of the docking shaft 8323, and the two 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.

[0044] Among them, the length of the auxiliary detection antenna 8324 set on the left is longer than the auxiliary detection antenna 8324 set, and the height of the fixed block 8325 set on the left is lower than the fixed block 8325 set on the right, so as to meet the simultaneous synchronous reciprocating swing process of the auxiliary detection antennas 8324 on both sides.

[0045] Specifically, the swing adjustment effect is used to assist in strengthening the detection range of the drone's electromagnetic wave signals, greatly enhancing the signal acquisition efficiency.

[0046] Specifically, when the main detection antenna 82 performs auxiliary detection activities, the detection and collection effect of the main detection antenna 82 can be further expanded by swinging the auxiliary detection antenna 8324 provided inside the detection structure 832, so as to realize the rapid collection and acquisition of electromagnetic wave signals of the drone. If it is necessary to adjust the detection angle of the auxiliary detection antenna 8324 to meet the collection activities of electromagnetic wave signals at different positions, the motor 4 can realize the reversal of the turntable 5, so that the wireless detection radar 6 will realize the synchronous reversal of the main detection antenna 82. In this way, the external connection of the main detection antenna 82 The driving disk 8311 will reverse accordingly, and because the driving disk 8311 is arranged in a ratchet shape as a whole, when the driving disk 8311 reverses, its external tooth angle will push against the clamping strips 8312 arranged on the left and right sides, thereby, the gear disk 8314 arranged at the lower end of the driving disk 8311 and rotatably mounted on the middle part of the upper end of the bracket 81 will reverse synchronously accordingly, and when the gear disk 8314 reverses, the gears 8315 meshingly connected to the left and right sides of the gear disk 8314 can rotate simultaneously to realize the synchronous rotation of the rotating drum 8321 connected to the upper end; When the rotating drums 8321 on both sides rotate at the same time, through the rotation transmission of the transmission groove 8322 opened in the middle of the rotating drums 8321 on both sides, the docking shaft 8323 embedded in the transmission groove 8322 can drive the auxiliary detection antenna 8324 connected at the upper end to perform swing adjustment activities under the support and cooperation of the external fixed block 8325, so as to quickly realize the swing adjustment of the detection angle of the auxiliary detection antenna 8324, so that it can flexibly adjust the detection position, greatly improve the auxiliary activities of the external drone electromagnetic wave signal, and speed up the signal acquisition efficiency; Secondly, when the gears 8315 on both sides rotate continuously, the rotating drums 8321 on both sides can rotate synchronously and continuously. In this way, the auxiliary detection antennas 8324 on both sides will realize the reciprocating swing detection effect through the cyclic transmission cooperation of the corresponding connecting shafts 8323 and the transmission grooves 8322, and the reciprocating swing detection activities of the auxiliary detection antennas 8324 on both sides can be carried out simultaneously with the reverse rotation detection activities of the main detection antenna 82 and the wireless detection radar 6. In this way, the acquisition of external UAV electromagnetic wave signals can be significantly enhanced, and the subsequent feature extraction, feature entry, feature comparison and alarm rate can be improved, and the response effect of the system can be further improved; When there is no need to adjust the detection and reciprocating swing detection activities of the auxiliary detection antennas 8324 on both sides, it is only necessary to drive the motor 4 to realize the positive 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 card strips 8312 on both sides, that is, the gear disk 8314 is in a static state as a whole. Therefore, the auxiliary detection antennas 8324 on both sides can be synchronously static to adapt to different detection situations.

[0047] The embodiments of this specific implementation are all preferred embodiments of the present application, and are not intended to limit the protection scope of the present application. The same components are represented by the same figure marks. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the protection scope of the present 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 into 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.

2. The method for detecting and warning drone signals based on dynamic knowledge base update according to claim 1 is characterized in that: The detection device comprises: 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. The method for detecting and warning drone signals based on dynamic knowledge base update according to claim 1 is 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. The method for detecting and warning drone signals based on dynamic knowledge base update according to claim 1 is 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. The method for detecting and warning drone signals based on dynamic knowledge base update according to claim 1 is 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. The method for detecting and warning drone signals based on dynamic knowledge base update according to claim 1 is characterized in that: 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 tray (7) and a detection enhancement device (8), wherein the base (1) is provided with a frame (2) at the upper end, the frame (2) is provided with solar panels (3) on both sides, the frame (2) is provided with a motor (4) inside, the top output end of the motor (4) is connected to a turntable (5), the upper end of the turntable (5) is provided with a wireless detection radar (6), the top of the wireless detection radar (6) is connected to the tray (7), the upper end of the tray (7) is connected to the detection enhancement device (8), and the bottom sides of the detection enhancement device (8) are fixed to the frame (2).

7. The method for detecting and warning drone signals based on dynamic knowledge base update according to claim 6 is characterized in that: 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 bracket (81) is installed inside the surrounding frame (2); 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 installed with the 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).

8. The method for detecting and warning drone signals based on dynamic knowledge base updating according to claim 7 is characterized in that: The adjustable detection component (83) comprises a transmission structure (831) and a swing detection structure (832); the transmission structure (831) is mounted on 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).

9. The method for detecting and warning drone signals based on dynamic knowledge base update according to claim 8 is 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); clamping strips (8312) are clamped on both sides of the outer end of the driving disk (8311); the clamping strip (8312) is rotatably connected to both sides of the inside of the gear disk (8314), and a spring sheet (8313) is installed on the outer side of the clamping strip (8312); the gear disk (8314) is rotatably connected to the middle part of the upper end of the bracket (81), and gears (8315) are meshedly connected on both sides of the gear disk (8314); the upper end of the gear (8315) is connected to the swing detection structure (832).

10. A method for detecting and warning unmanned aerial vehicle signals based on dynamic knowledge base updating according to claim 9, wherein 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), wherein the rotating drum (8321) is docked with 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 on 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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