Storable portable unmanned aerial vehicle detection device and use method

Abstract

The invention relates to a storable portable unmanned aerial vehicle detection device and a use method, and belongs to the technical field of unmanned aerial vehicle detection signal transmission. Comprising a folding antenna assembly and a backpack assembly provided with the folding antenna assembly, and the folding antenna assembly comprises a supporting rod, a plurality of direction-finding antennas and an omnidirectional detection antenna. A bent part is arranged on the supporting rod, one end of the bent part is connected with the backpack assembly, the other end of the bent part is connected with the supporting rod, and the bent part is used for containing the supporting rod; the omnidirectional detection antenna is fixedly mounted at one end, far away from the bending part, of the supporting rod; the plurality of direction-finding antennas are detachably installed on the supporting rod and are distributed on the peripheral side of the omnidirectional detection antenna. The objective of the invention is to solve the technical problems that handheld detection or backpack detection equipment in the prior art cannot rapidly give out azimuth information of an unmanned aerial vehicle, needs carrier rotation for direction finding, and is high in use requirement and poor in precision.

Description

Technical Field

[0001] The present invention belongs to the technical field of drone detection signal transmission, and in particular relates to a detection device capable of accommodating a portable drone and a use method thereof. Background Art

[0002] With the rapid promotion and application of drones in military and civilian fields, it is necessary to accelerate the research and development of drone detection technology. Domestic drone detection system detection equipment integrates a variety of advanced technologies, such as radar detection technology, optical detection technology, spectrum detection technology, etc. With the help of signal processing algorithms and data fusion technology, drone detection equipment can realize automatic identification, classification and tracking of targets. Domestic drone detection systems have been applied in the industry. Most omnidirectional drone detection systems are fixedly deployed or used in combination with handheld and backpack devices.

[0003] The patent with announcement number: CN217159687U discloses a backpack UAV detection device, including a shell and a backpack; the shell is arranged inside the backpack; the top of the shell is connected to a detection antenna extending out of the backpack; the bottom of the shell is detachably connected to a mobile power supply; the inside of the shell is connected to a detection controller and a device main controller; the detection antenna is electrically connected to the detection controller, and the detection controller and the mobile power supply are electrically connected to the device main controller respectively.

[0004] The prior art has at least the following problems during use

[0005] Handheld or backpack detection equipment cannot quickly provide the UAV's position information. The carrier needs to rotate to find the direction, which has high usage requirements and poor accuracy. Summary of the invention

[0006] The present invention provides a detection device capable of being stored and carried by a portable UAV and a method for using the device, which are used to solve the technical problems in the prior art that handheld detection or backpack detection equipment cannot quickly provide UAV position information, requires a carrier to rotate for direction finding, has high usage requirements and poor accuracy.

[0007] In order to achieve the above object, the present invention is implemented by the following technical solutions:

[0008] A detection device capable of storing a portable drone includes a folding antenna assembly and a backpack assembly on which the folding antenna assembly is installed. The folding antenna assembly includes a support rod, multiple direction-finding antennas, and an omnidirectional detection antenna. The support rod is provided with a bending portion, one end of which is connected to the backpack assembly, and the other end of which is connected to the support rod for storing the support rod; the omnidirectional detection antenna is fixedly installed on the end of the support rod away from the bending portion; multiple direction-finding antennas are detachably installed on the support rod and distributed around the omnidirectional detection antenna.

[0009] Furthermore, the folding antenna assembly also includes: a plurality of support trusses, a sliding member, a plurality of transmission rods, and a mounting seat. One end of the plurality of support trusses is rotatably mounted on the end of the support rod away from the backpack assembly, and the plurality of support trusses are evenly distributed along the circumference of the support rod, and the plurality of support trusses are distributed on the support rod in a divergent manner; a sliding groove distributed along the axial direction of the support rod is provided on the support rod, and the sliding member is slidably arranged in the sliding groove; a plurality of transmission rods correspond to the plurality of support trusses one by one, one end of the transmission rod is rotatably arranged on the sliding member, and the other end is rotatably arranged on the support truss, and the sliding member is slid to drive the rotation of the support truss; a mounting seat is installed at the other end of the support truss, and a mounting groove is provided on the mounting seat, and the direction-finding antenna is installed in the mounting groove.

[0010] Furthermore, the folding antenna assembly further comprises: two sets of positioning balls and locking spring balls. The two sets of positioning balls are installed in the installation slots for clamping the direction-finding antenna; the locking spring balls are installed on the sliding member for clamping and fixing the sliding member to the sliding slot.

[0011] Furthermore, the backpack assembly includes a detection module, a direction finding module, a quick-plug battery module, a backpack shell, an aviation plug interface, and a display and control device; the aviation plug interface is connected to the display and control device via a composite cable, and is used to display the detected UAV position information; the quick-plug battery module is provided with a locking mechanism, and the quick-plug battery module can be detachably installed in the backpack shell; the detection module is provided with a low-noise amplifier module, a limiter module and a signal processing module, and the detection module is communicatively connected to the omnidirectional detection antenna; the direction finding module is provided with a power distributor, a radio frequency switch, a low-noise amplifier module and a data processing module, and the direction finding module is communicatively connected to the direction finding antenna.

[0012] Furthermore, an LED indicator light and a sound-generating device are installed on the top of the backpack component, which can emit light and sound to issue an alarm after detecting a drone; an electronic compass is installed inside the backpack component to dynamically revise the detection signal.

[0013] Furthermore, a storage pipe is installed in the support rod for passing a radio frequency feeder.

[0014] Based on the above detection device, the present invention also provides a method for using the detection device, comprising the following steps:

[0015] S1, releasing the storage state of the support rod, straightening the bent portion and inserting the insertion spring to lock the bent portion and keep it vertical, sliding the sliding member along the sliding groove in a direction away from the backpack assembly to evenly spread the support trusses, and fixing the relative position of the sliding member in the sliding groove by the locking spring bead;

[0016] S2, installing the direction-finding antenna into the installation slot, clamping the direction-finding antenna and the inner wall of the installation slot by the positioning ball, and connecting the RF feeder with the direction-finding antenna and the omnidirectional detection antenna;

[0017] S3, starting the detection module to capture and process the drone signal through the omnidirectional detection antenna;

[0018] S4, starting the direction finding module, and after receiving the data processed by the detection module, calculating the position information of the UAV through the multiple direction finding antennas;

[0019] S5. After completing a series of measurements, turn off the device, disconnect the RF feeder, remove the direction-finding antenna, and slide the sliding member along the sliding groove toward the direction close to the back assembly to store the support truss.

[0020] Furthermore, the S3 further comprises the following steps:

[0021] S31, the omnidirectional detection antenna picks up the broadband electromagnetic signal and transmits it to the low noise amplifier module through the RF feeder.

[0022] S32, the low noise amplifier module amplifies the broadband electromagnetic signal and transmits it to the lower limiter module, and the limiter module transmits the broadband electromagnetic signal within the safety threshold to the signal processing module.

[0023] S33, the signal processing module down-converts the received broadband electromagnetic signal into an intermediate frequency signal, and then converts the intermediate frequency signal into a baseband signal through the data processing module.

[0024] S34: The signal processing module performs a spatial signal search on the baseband signal, preliminarily excludes non-UAV signals, and further screens the data of suspected UAV signals.

[0025] S35. The signal processing module interprets and caches the data of the suspected drone signal based on the thresholds of frequency, bandwidth, bandwidth occupancy, interception time, amplitude data, and duration.

[0026] S36, the signal processing module performs signal energy detection on the judged data, extracts signal features after detection, compares them with sample signal features of existing drones, and identifies the drone signal.

[0027] S37, the signal processing module transmits the identified drone signal characteristics including frequency, bandwidth, and interception time data to the direction finding module in real time.

[0028] Furthermore, the S4 further comprises the following steps:

[0029] S41. The direction finding module receives the characteristic information of the UAV transmitted from the detection module and starts the direction finding process.

[0030] S42, obtaining electromagnetic signals from multiple direction-finding antennas, transmitting them to the power distributor through the feeder, and then transmitting them to the low-noise amplifier module after passing through the RF switch, and finally to the data processing module.

[0031] S43, the data processing module classifies the electromagnetic signal data of the direction-finding antenna according to the characteristic information of the UAV, with 3 GHz as the boundary.

[0032] S44, the signal processing module processes the electromagnetic signals in the range of 70MHz to 3GHz (including 3GHz) using the correlation interferometer system method to obtain the position information of the invading drone, and transmits it to the host computer through the aviation plug interface for situation and position display, and at the same time gives instructions to make the LED light flash and emit an alarm sound.

[0033] S45. The signal processing module processes the electromagnetic signals in the range of 3 GHz to 7 GHz (excluding 3 GHz) by using the amplitude ratio combined direction finding method. First, the rough azimuth measured by the amplitude ratio direction finding is used to select two direction finding antennas for single baseline interferometer direction finding. The interferometer direction finding formula is used to solve the real and ambiguous azimuths. The interferometer direction finding angle is compared with the amplitude ratio direction finding angle to determine the real azimuth of the UAV.

[0034] S46. The detection module obtains the position information of the invading drone and transmits it to the host computer through the aviation plug interface for situation and position display. At the same time, it gives instructions to make the LED light flash and emit an alarm sound.

[0035] The present invention provides a detection device capable of storing and carrying a portable drone and a method for using the same, which has the following beneficial effects:

[0036] By providing a folding antenna assembly, the support rod is folded and stored through the bending portion, and the information is initially captured by the omnidirectional detection antenna, and the orientation information of the UAV is further screened and accurately located by multiple direction-finding antennas, thereby improving the portability of the device in use and installation and the reliability of measurement. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0038] Figure 1 A schematic diagram of the structure of a detection device that can accommodate a portable drone provided by an embodiment of the present invention;

[0039] Figure 2 A schematic diagram of the internal structure of a backpack assembly provided by an embodiment of the present invention;

[0040] Figure 3 A schematic diagram of the structure of a foldable antenna assembly capable of accommodating a portable drone detection device provided by an embodiment of the present invention after folding.

[0041] In the figure: 1-folding antenna assembly; 2-mounting seat; 3-omnidirectional detection antenna; 4-sliding part; 5-transmission rod; 6-support truss; 7-direction finding antenna; 8-support rod; 9-backpack assembly; 901-detection module; 902-support frame; 903-direction finding module; 904-quick-insert battery module; 905-main control module; 906-power management module; 907-heat dissipation module; 10-backpack shell; 11-aviation plug interface; 12-antenna storage compartment. DETAILED DESCRIPTION

[0042] The embodiments of the present application are described in detail below with reference to the accompanying drawings.

[0043] In the description of the present application, it should be understood that the terms "center", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0044] The terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, unless otherwise specified, "plurality" means two or more.

[0045] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be welding, bolt connection, or riveting; it can be fixed connection, detachable connection, or integral connection; it can be mechanical connection or electrical connection; it can be directly connected or indirectly connected through an intermediate medium, or it can be internal communication between two components. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0046] Example:

[0047] based on Figures 1 to 3 As shown, this embodiment provides a portable drone detection device, including a folding antenna assembly 1, a backpack assembly 9 installed with the folding antenna assembly 1, and the folding antenna assembly 1 includes: a support rod 8, multiple direction-finding antennas 7, and an omnidirectional detection antenna 3. A bending portion is provided on the support rod 8, one end of the bending portion is connected to the backpack assembly 9, and the other end of the bending portion is connected to the support rod 8 for storing the support rod 8; multiple direction-finding antennas 7 are detachably installed on the support rod 8; and the omnidirectional detection antenna 3 is fixedly installed on one end of the support rod 8 away from the bending portion.

[0048] In this embodiment, if Figures 1 to 3 As shown, the bending part of the support rod 8 is connected by a hinge to ensure that the support rod 8 can be folded close to the backpack component 9 in the storage state, and can be fixed by a latch connection in cooperation with the locking device of the teammates, thereby reducing the overall occupied space. The support rod 8 can be made of lightweight and high-strength aluminum alloy or carbon fiber material to reduce the weight while meeting the mechanical performance requirements; multiple direction-finding antennas 7 can be detachably installed on the support rod 8, and can be installed in a slot and buckle matching manner. Evenly distributed slots are pre-set on the support rod 8, and corresponding buckles are designed at the bottom of the direction-finding antenna 7. In this way, when installing, you only need to snap the buckle into the slot, and you can also easily remove it when disassembling, which is convenient for replacing or repairing the antenna. Rubber or silicone gaskets can be set in the slot to increase friction and play a buffering role to prevent the antenna from loosening due to vibration and other reasons during use. By setting up omnidirectional detection and detection antennas to work together, the accuracy of the device in capturing the direction of the drone is improved, and there is no need to constantly adjust the orientation of itself and the device during use to obtain the accurate signal source.

[0049] Further, in some implementations of this embodiment, Figures 1 to 3 As shown, the folding antenna assembly 1 also includes: a plurality of supporting trusses 6, a sliding member 4, a plurality of transmission rods 5, and a mounting seat 2. One end of the plurality of supporting trusses 6 is rotatably mounted on the end of the supporting rod 8 away from the backpack assembly 9, and the plurality of supporting trusses 6 are evenly distributed along the circumference of the supporting rod 8, and the plurality of supporting trusses 6 are distributed on the supporting rod 8 in a divergent manner; a sliding groove distributed along the axial direction of the supporting rod 8 is provided on the supporting rod 8, and the sliding member 4 is slidably arranged in the sliding groove; the plurality of transmission rods 5 correspond to the plurality of supporting trusses 6 one by one, one end of the transmission rod 5 is rotatably arranged on the sliding member 4, and the other end is rotatably arranged on the supporting trusses 6, and the sliding member 4 is slid to drive the rotation of the supporting trusses 6; the mounting seat 2 is installed at the other end of the supporting trusses 6, and a mounting groove is provided on the mounting seat 2, and the direction-finding antenna 7 is installed in the mounting groove.

[0050] In this embodiment, if Figures 1 to 3 As shown, a circular or polygonal connection plate similar to the top connection structure of an umbrella rib is provided at one end of the support rod 8 away from the backpack assembly 9. The connection plate is made of high-strength aluminum alloy and can be made by precision casting or machining to ensure its structural strength and dimensional accuracy. A plurality of axial holes are evenly distributed on the connection plate, and one end of the support truss rod 6 is connected to it rotatably through rivets or high-strength bolts. A self-lubricating copper sleeve is installed in the axial hole to reduce the friction resistance of the support truss rod 6 when it rotates, while ensuring its smoothness and stability of rotation. The direction-finding antenna 7 is installed in the installation groove. Afterwards, a buckle or clamping device can be used for fixing. The design of the buckle or clamping device should ensure that the antenna can be firmly fixed on the mounting base 2 without damaging the antenna housing, and it is convenient for disassembly and replacement, just like the installation of the umbrella cover on the umbrella ribs should be both stable and easy to disassemble and repair. As the sliding part 4 moves, the transmission rod 5 drives the supporting truss rod 6 to gradually expand outward with the connection point with the supporting rod 8 as the axis. The supporting rod 8 is provided with an anti-foolproof limit block to prevent the sliding part 4 from getting stuck and failing. When it slides to a predetermined position, the direction-finding antenna 7 is installed.

[0051] Further, in some implementations of this embodiment, Figures 1 to 3 As shown, the folding antenna assembly 1 also includes: two sets of positioning balls and locking spring balls. The two sets of positioning balls are installed in the installation grooves for clamping the direction-finding antenna 7; the locking spring balls are installed on the sliding member 4 for clamping and fixing the sliding member 4 with the sliding groove.

[0052] Further, in some implementations of this embodiment, Figures 1 to 3As shown, the backpack component 9 includes a detection module 901, a direction finding module 903, a quick-plug battery module 904, a backpack shell 10, an aviation plug interface 11, and a display and control device; the aviation plug interface 11 is connected to the display and control device through a composite cable of a power supply and a network cable, and is used to display the detected UAV position information; the quick-plug battery module 904 is provided with a locking mechanism, and the quick-plug battery module 904 can be detachably installed in the backpack shell 10; the detection module 901 is provided with a low noise amplifier module, a limiter module and a signal processing module, and the detection module 901 is communicatively connected to the omnidirectional detection antenna 3; the direction finding module 903 is provided with a power distributor, a radio frequency switch, a low noise amplifier module and a data processing module, and the direction finding module 903 is communicatively connected to the direction finding antenna 7.

[0053] In this embodiment, if Figures 1 to 3 As shown, the backpack assembly 9 includes a main control module 905, a detection module 901, a direction finding module 903, a power management module 906, a quick-plug battery module 904, a heat dissipation module 907, a support frame 902, an aviation plug interface 11, a backpack shell 10, a detection antenna storage compartment 12, a display and control device and a shoulder strap, and other modules are controlled and deployed through the main control template.

[0054] Further, in some implementations of this embodiment, Figures 1 to 3 As shown, an LED indicator light and a sound-generating device are installed on the top of the backpack component 9, which can emit light and sound to warn after detecting a drone; an electronic compass is installed inside the backpack component 9 for dynamically revising the detection signal.

[0055] Further, in some implementations of this embodiment, Figures 1 to 3 As shown, a receiving pipe is installed in the support rod 8 for passing the RF feeder.

[0056] In this embodiment, if Figures 1 to 3 As shown, the storage pipe is used to set the connection lines of the omnidirectional detection antenna 3 and the direction-finding antenna 7 to prevent damage to the wires caused by external wiring.

[0057] Based on the above detection device, this embodiment provides a method for using the detection device, including the following steps:

[0058] S1. Release the stowed state of the support rod 8, straighten the bent portion and insert the insertion spring to lock the bent portion and keep it vertical, slide the slide 4 along the sliding groove in a direction away from the backpack assembly 9, evenly spread the support truss 6, and fix the relative position of the slide 4 in the sliding groove by the locking spring bead;

[0059] S2, install the direction-finding antenna 7 into the installation groove, clamp the direction-finding antenna 7 and the inner wall of the installation groove through the positioning ball, and connect the RF feeder with the direction-finding antenna 7 and the omnidirectional detection antenna 3;

[0060] S3, start the detection module 901, and capture and process the drone signal through the omnidirectional detection antenna 3;

[0061] S4, start the direction finding module 903, after receiving the data processed by the detection module 901, calculate the position information of the UAV through multiple direction finding antennas 7;

[0062] S5. After completing the series of measurements, turn off the device, disconnect the RF feeder, remove the direction-finding antenna 7, and slide the slide member 4 along the slide slot toward the direction close to the back assembly to store the support truss.

[0063] Furthermore, S3 also includes the following steps:

[0064] S31, the omnidirectional detection antenna 3 picks up the broadband electromagnetic signal and transmits it to the low noise amplifier module through the radio frequency feeder.

[0065] S32, the low noise amplifier module amplifies the broadband electromagnetic signal and transmits it to the lower limiter module, and the limiter module transmits the broadband electromagnetic signal within the safety threshold to the signal processing module.

[0066] S33, the signal processing module down-converts the received broadband electromagnetic signal into an intermediate frequency signal, and then converts the intermediate frequency signal into a baseband signal through the data processing module.

[0067] S34: The signal processing module performs a spatial signal search on the baseband signal, preliminarily excludes non-UAV signals, and further screens the data of suspected UAV signals.

[0068] S35. The signal processing module interprets and caches the data of the suspected drone signal based on the thresholds of frequency, bandwidth, bandwidth occupancy, interception time, amplitude data, and duration.

[0069] S36, the signal processing module performs signal energy detection on the judged data, extracts signal features after detection, compares them with sample signal features of existing drones, and identifies the drone signal.

[0070] S37, the signal processing module transmits the identified drone signal characteristics including frequency, bandwidth, and interception time data to the direction finding module 903 in real time.

[0071] In this embodiment, if Figures 1 to 3 As shown, when the omnidirectional detection antenna 3 picks up the electromagnetic signal, it is necessary to ensure that there is no obvious obstruction at its location to ensure the integrity and accuracy of the signal reception. The feeder connection should be firm to avoid loss or interruption during signal transmission;

[0072] When the low noise amplifier module amplifies the signal, it is necessary to adjust the amplification factor according to the actual environment and signal strength to prevent signal distortion or overload. When setting the safety threshold of the limiter module, it is necessary to set it reasonably according to the characteristics of the equipment performance and electromagnetic environment to ensure that only signals within the safe range are transmitted to the signal processing module;

[0073] When the signal processing module performs down-conversion operation, the frequency conversion parameters must be accurately adjusted to ensure the quality of the intermediate frequency signal. The sampling frequency and accuracy of the analog-to-digital conversion (ADC) component must be optimized according to the signal characteristics to accurately restore the baseband signal;

[0074] When searching for and screening suspected drone signals in space, the algorithm used by the signal processing module should be continuously optimized and updated according to the actual detection data to improve the accuracy and efficiency of signal screening. During the threshold reading and cache processing, the cache size and data processing order should be reasonably set to avoid data loss or processing delay.

[0075] Furthermore, S4 further includes the following steps:

[0076] S41, the direction finding module 903 receives the characteristic information of the UAV transmitted from the detection module 901 and starts the direction finding process.

[0077] S42, obtaining electromagnetic signals from multiple direction-finding antennas 7, transmitting them to the power distributor through the feeder, then transmitting them to the low noise amplifier module after passing through the radio frequency switch, and finally handing them over to the data processing module.

[0078] S43, the data processing module classifies the electromagnetic signal data of the direction finding antenna 7 according to the characteristic information of the UAV, with 3 GHz as the boundary.

[0079] S44, the signal processing module processes the electromagnetic signals in the range of 70MHz to 3GHz (including 3GHz) using the correlation interferometer system method to obtain the position information of the invading drone, and transmits it to the host computer through the aviation plug interface 11 for situation and position display, and at the same time gives a command to make the ED light flash and emit an alarm sound.

[0080] S45, the signal processing module processes the electromagnetic signals in the range of 3 GHz to 7 GHz (excluding 3 GHz) by using the amplitude ratio combined direction finding method. First, the rough azimuth measured by the amplitude ratio direction finding is used to select two direction finding antennas 7 for single baseline interferometer direction finding. The interferometer direction finding formula is used to solve all the real and fuzzy azimuths. The interferometer direction finding angle is compared with the amplitude ratio direction finding angle to determine the real azimuth of the UAV.

[0081] S46, the detection module 901 obtains the position information of the invading drone and transmits it to the host computer through the aviation plug interface 11 for situation and position display, and at the same time gives a command to make the LED light of the backpack flash and emit an alarm sound.

[0082] In this embodiment, if Figures 1 to 3 As shown, before the direction finding module 903 starts the direction finding process, it is necessary to first check the integrity and accuracy of the received drone feature information to ensure that the basic data for the direction finding calculation is correct;

[0083] During the electromagnetic signal transmission process, from the direction-finding antenna 7 to the power distributor, RF switch, low-noise amplifier module and data processing module, the connection and parameter setting of each link must be strictly carried out in accordance with the equipment requirements to ensure the quality and stability of signal transmission;

[0084] When the data processing module classifies electromagnetic signal data, the judgment of the 3GHz limit must be accurate to avoid the wrong direction finding system selection due to incorrect frequency division;

[0085] When using the correlation interferometer system and the amplitude-phase combined direction finding system to process signals, the algorithm parameters should be accurately adjusted according to the characteristics of signals in different frequency ranges, such as the baseline length of the interferometer and the reference standard of the amplitude-phase comparison, so as to improve the direction finding accuracy.

[0086] After determining the true position of the drone, when the air plug network port transmits data to the host computer, it is necessary to check the network port connection and data transmission protocol settings to ensure that the host computer can receive and display the situation and position information of the drone in a timely and accurate manner. At the same time, the LED light flashing and alarm sound triggering mechanism of the backpack component 9 are working properly to ensure timely and effective alarm.

[0087] In summary, when using a storable portable drone detection device and method of use, by sliding the slider 4, the transmission rod 5 is driven to promote the rotation of the support truss 6, thereby unfolding multiple support trusses 6 and distributing them in a divergent shape, and the correspondingly distributed detachable direction-finding antenna 7 is used to further judge the direction of the data detected by the omnidirectional detection antenna 3, thereby reducing the cumbersome adjustment of the device, cooperating with various functional modules in the backpack component 9 to improve the measurement accuracy, and further improving the convenience of the device during use.

[0088] The above is only a specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art can easily think of changes or substitutions within the technical scope of the present invention, which should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention should be based on the protection scope of the claims.

Claims

1. A detection device capable of storing and carrying a portable drone, comprising: A foldable antenna assembly (1) and a backpack assembly (9) equipped with the foldable antenna assembly (1), characterized in that: The folding antenna assembly (1) comprises: A support rod (8), wherein the support rod (8) is provided with a bent portion, one end of the bent portion is connected to the backpack assembly (9), and the other end of the bent portion is connected to the support rod (8), and the bent portion is used to store the support rod (8); An omnidirectional detection antenna (3) is fixedly mounted on an end of the support rod (8) away from the bent portion, the omnidirectional detection antenna (3) being used to receive and transmit drone signals; A plurality of direction-finding antennas (7) are detachably mounted on the support rod (8) and are distributed around the omnidirectional detection antenna (3). The plurality of direction-finding antennas (7) locate the position of the drone by sending and transmitting electromagnetic signals.

2. The portable drone detection device according to claim 1, characterized in that: The folding antenna assembly (1) further comprises: A plurality of support trusses (6), one end of which is rotatably mounted on an end of the support rod (8) away from the backpack assembly (9), and the plurality of support trusses (6) are evenly distributed along the circumference of the support rod (8), and the plurality of support trusses (6) are distributed on the support rod (8) in a divergent manner; A sliding member (4), wherein the support rod (8) is provided with a sliding groove distributed along the axial direction of the support rod (8), and the sliding member (4) is slidably arranged in the sliding groove; A plurality of transmission rods (5) corresponding one to one to the plurality of support trusses (6); one end of the transmission rod (5) is rotatably disposed on the sliding member (4), and the other end is rotatably disposed on the support truss (6); the sliding member (4) is slid to drive the support truss (6) to rotate; The mounting seat (2) is mounted on the other end of the supporting truss (6); a mounting groove is provided on the mounting seat (2), and the direction-finding antenna (7) is mounted in the mounting groove.

3. The portable drone detection device according to claim 2, characterized in that: The folding antenna assembly (1) further comprises: Two sets of positioning balls are installed in the installation groove and are used to clamp the direction-finding antenna (7); A locking spring bead is mounted on the sliding member (4) and is used for clamping and fixing the sliding member (4) with the sliding groove.

4. The portable drone detection device according to claim 3, characterized in that: The backpack assembly (9) comprises a detection module (901), a direction finding module (903), a quick-plug battery module (904), a backpack housing (10), an aviation plug interface (11), and a display and control device; The aviation plug interface (11) is connected to the display control device via a composite cable, and is used to display the detected UAV position information; The quick-insertion battery module (904) is provided with a locking mechanism, and the quick-insertion battery module (904) can be detachably installed in the backpack housing (10); The detection module (901) is provided with a low noise amplifier module, a limiter module and a signal processing module, and the detection module (901) is communicatively connected with the omnidirectional detection antenna (3); The direction finding module (903) is provided with a power distributor, a radio frequency switch, a low noise amplifier module and a data processing module, and the direction finding module (903) is communicatively connected to the direction finding antenna (7).

5. The portable drone detection device according to claim 4, characterized in that: The backpack component (9) is also equipped with an LED indicator light and a sound device on the top, which can emit light and sound to give an alarm after detecting a drone; An electronic compass is installed inside the backpack component (9) for dynamically revising the detection signal.

6. The portable drone detection device according to claim 5, characterized in that: A storage pipe is installed inside the support rod (8) for passing a radio frequency feeder line.

7. A method for using a detection device, characterized in that: A portable drone detection device according to claim 6 comprises the following steps: S1, releasing the storage state of the support rod (8), straightening the bent portion and inserting the insertion spring to lock the bent portion and keep it vertical, sliding the sliding member (4) along the sliding groove in a direction away from the backpack assembly (9), evenly spreading the support truss rod (6), and fixing the relative position of the sliding member (4) in the sliding groove by the locking spring bead; S2, installing the direction-finding antenna (7) into the installation groove, clamping the direction-finding antenna (7) and the inner wall of the installation groove by means of the positioning ball, and connecting the radio frequency feeder with the direction-finding antenna (7) and the omnidirectional detection antenna (3); S3, starting the detection module (901) to capture and process the drone signal through the omnidirectional detection antenna (3); S4, starting the direction finding module (903), and after receiving the data processed by the detection module (901), calculating the position information of the UAV through the multiple direction finding antennas (7); S5. After completing the series of measurements, turn off the device, disconnect the RF feeder, remove the direction-finding antenna (7), and slide the sliding member (4) along the sliding groove toward the direction close to the backpack assembly (9) to store the supporting truss (6).

8. A method for using a detection device according to claim 7, characterized in that: The S3 further comprises the following steps: S31, the omnidirectional detection antenna (3) picks up a broadband electromagnetic signal and transmits it to the low noise amplifier module through the radio frequency feeder; S32, the low noise amplifier module amplifies the broadband electromagnetic signal and transmits it to the lower limiter module, and the limiter module transmits the broadband electromagnetic signal within the safety threshold to the signal processing module; S33, the signal processing module down-converts the received broadband electromagnetic signal into an intermediate frequency signal, and then converts the intermediate frequency signal into a baseband signal through the data processing module; S34, the signal processing module performs a spatial signal search on the baseband signal, preliminarily excludes non-UAV signals, and further screens the data of suspected UAV signals; S35, the signal processing module interprets and caches the data of the suspected drone signal based on the thresholds of frequency, bandwidth, bandwidth occupancy, interception time, amplitude data, and duration; S36, the signal processing module performs signal energy detection on the determined data, extracts signal features after detection, compares the features of existing drone sample signals, and identifies the drone signal; S37, the signal processing module transmits the identified drone signal characteristics including frequency, bandwidth, and interception time data to the direction finding module (903) in real time.

9. A method for using a detection device according to claim 7, characterized in that: The S4 further comprises the following steps: S41, the direction finding module (903) receives the characteristic information of the UAV transmitted from the detection module (901), and starts the direction finding process; S42, acquiring electromagnetic signals from the plurality of direction-finding antennas (7), transmitting the electromagnetic signals to the power distributor via the feeder, transmitting the electromagnetic signals to the low noise amplifier module after passing through the radio frequency switch, and finally delivering the electromagnetic signals to the data processing module; S43, the data processing module classifies the electromagnetic signal data of the direction-finding antenna (7) according to the characteristic information of the drone, with 3 GHz as the boundary; S44, the signal processing module processes the electromagnetic signals in the range of 70 MHz to 3 GHz (including 3 GHz) using a correlation interferometer system method to obtain the position information of the invading UAV, and transmits it to the host computer through the aviation plug interface (11) for situation and position display, and at the same time gives a command to make the LED light flash and the sound device emit an alarm sound; S45, the signal processing module processes the electromagnetic signals in the range of 3 GHz to 7 GHz (excluding 3 GHz) by using an amplitude ratio combined direction finding method, firstly using the rough azimuth measured by the amplitude ratio direction finding to select two direction finding antennas (7) for single baseline interferometer direction finding, using the interferometer direction finding formula to calculate the true and fuzzy azimuths, and then comparing the interferometer direction finding angle with the amplitude ratio direction finding angle to determine the true azimuth of the UAV; S46, the detection module (901) obtains the position information of the invading drone and transmits it to the host computer through the aviation plug interface (11) for situation and position display, and at the same time gives instructions to make the LED light flash and the sound device emit an alarm sound.

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