High-performance radio reconnaissance equipment

Abstract

The utility model discloses a high-performance radio reconnaissance device, which comprises an unmanned aerial vehicle detection and direction finding integrated antenna and a radio reconnaissance processing unit, and the integrated antenna comprises a base, a first mounting plate, a second mounting plate and a shell. The base is mounted on a base of the first mounting plate, the second mounting plate is mounted on the top surface of the first mounting plate through the supporting columns, and the mounting plates are circular; eight horn antennas are uniformly mounted on the first mounting plate along the circumference, and nine dipole antenna elements are uniformly mounted on the second mounting plate along the circumference; the horn antenna and the dipole antenna element are connected with the switch matrix through a bunched cable; the radio reconnaissance processing unit completes reconnaissance and positioning of the unmanned aerial vehicle, and interferences equipment is linked to counter the locked unmanned According to the utility model, a radio frequency spectrum detection direction finding technology is adopted, and an unmanned aerial vehicle protocol analysis technology is combined, so that ultra-long distance discovery, accurate direction finding and pitch angle direction finding of the low-altitude flight unmanned aerial vehicle are realized.

Description

Technical Field

[0001] The present invention belongs to the technical field of unmanned aerial vehicle detection, and in particular relates to a high-performance radio reconnaissance device. Background Art

[0002] Drone detection technology, a suite of high-tech tools used to detect, track, and identify drones, is a crucial component of modern security systems. Current drone detection technologies include infrared detection, radar scanning, electro-optical tracking, acoustic tracking, and spectrum reconnaissance. Each detection technology has its own advantages and disadvantages. Given the low, slow, and small nature of drones, the urgent challenge is to develop a new, integrated, high-performance radio reconnaissance device to ensure accurate drone detection. Summary of the Invention

[0003] The purpose of this utility model is to provide a high-performance radio reconnaissance equipment. The antenna combines radar detection with spectrum detection to perform ultra-long-range detection, precise direction finding and pitch angle direction finding of low-flying drones in the defense area, and uses linkage jamming equipment to counter illegal drones, meeting the "low, slow and small" characteristics of drones while providing a new integrated high-performance radio reconnaissance equipment.

[0004] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0005] A high-performance radio reconnaissance device comprises a base, a first mounting plate, a second mounting plate and a housing;

[0006] The base is mounted on the bottom of the first mounting plate, and the second mounting plate is mounted on the top surface of the first mounting plate through the support column, and the first mounting plate and the second mounting plate are both circular;

[0007] Eight horn antennas are evenly mounted along the circumference of a circle centered on the first mounting plate, and nine dipole antenna elements are evenly mounted along the circumference of a circle centered on the second mounting plate.

[0008] The horn antenna and the dipole antenna element are connected to a switch matrix, which is installed in the middle of the top surface of the first mounting plate; the horn antenna and the dipole antenna element are controlled by controlling the switch matrix;

[0009] The housing is mounted with a first mounting plate and encloses the switch matrix, the horn antenna and the dipole antenna element.

[0010] Furthermore, the switch matrix includes a four-to-one switch, a seven-to-one switch, a two-to-one switch, a lateral output one switch, and a lateral output two switch;

[0011] The four - way switch is connected to 3 dipole antenna elements, and the seven - way switch is connected to the remaining 6 dipole antenna elements.

[0012] Each horn antenna is connected to a two - way switch. Four of the two - way switches are connected to the lateral output one switch, and the remaining four two - way switches are connected to the lateral output two switch.

[0013] The lateral output one switch is connected to the four - way switch, and the lateral output two switch is connected to the seven - way switch. Both the lateral output one switch and the lateral output two switch are connected to RF output interfaces.

[0014] Furthermore, the eight horn antennas are connected to an eight - way switch, and the eight - way switch is connected to a model identification interface.

[0015] Furthermore, the lateral output one switch, the four - way switch, the lateral output two switch, and the seven - way switch are connected to a four - way power divider, and the four - way power divider is connected to a calibration signal input interface.

[0016] The present utility model combines horn antennas with high - performance dipole antennas to detect the defense area. Through radio detection technology, parameters such as signal frequency and bandwidth are detected and direction - finding is performed. It can monitor the frequency range from 20 MHz to 8000 MHz and has the characteristics of high gain and narrow beamwidth. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the external structure of the present utility model.

[0018] Figure 2 It is a schematic diagram of the internal structure of the present utility model.

[0019] Figure 3 It is a schematic diagram of the connection relationship of the switch matrix of the present utility model.

[0020] Figure 4 It is a schematic diagram of the connection relationship of the radio reconnaissance processing unit of the present utility model.

[0021] Reference numerals in the figures: 1, base; 2, housing; 3, first mounting plate; 4, second mounting plate; 5, support column; 6, horn antenna; 7, dipole antenna element; 8, switch matrix. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0022] As Figures 1 to 3 shown, this embodiment provides a high - performance radio reconnaissance device including a base 1, a first mounting plate 3, a second mounting plate 4, a horn antenna 6, a dipole antenna element 7, a switch matrix 8, an electronic compass, and a GPS module.

[0023] As Figure 2As shown, the base 1 is installed in the middle of the ground of the first mounting plate 3. Eight horn antennas 6 are evenly installed on the first mounting plate 3 in a circular array. The second mounting plate 4 is installed on the top surface of the first mounting plate 3 through the support column 5. Nine dipole antenna elements 7 are evenly installed on the second mounting plate 4 in a circular array. The switch matrix 8, electronic compass and GPS module are installed in the middle of the top surface of the first mounting plate 3. The housing 2 is installed on the top surface of the first mounting plate 3 to cover the horn antennas 6, dipole antenna elements 7, switch matrix 8, electronic compass and BDS / GPS / GNSS module.

[0024] One of the dipole antenna elements 7 is named as antenna element No. 1 to No. 9 as the starting point. Similarly, the horn antennas 6 are named as horn antenna 6 No. 1 to No. 8.

[0025] As Figure 3 shown, the switch matrix 8 is an electronic device for selecting radio frequency paths. In this embodiment, by setting several switch matrices 8 with different quantities and types, the selection of low-frequency and high-frequency signals is realized. Specifically, the switch matrix 8 of this embodiment includes a four-way selector switch, a seven-way selector switch, a two-way selector switch, an eight-way selector switch and a four-way power divider. Among them, the four-way selector switch and the seven-way selector switch are connected to the dipole antenna elements 7 to realize the switch control of low-frequency signals. The two-way selector switch and the eight-way selector switch are respectively connected to the horn antennas 6 to realize the switch control of high-frequency signals.

[0026] As Figure 3 shown, the four-way selector switch is connected to antenna element No. 1, No. 4 and No. 7. The seven-way selector switch is respectively connected to antenna element No. 2, No. 3, No. 5, No. 6, No. 8 and No. 9. The four-way selector switch and the seven-way selector switch are both connected with calibration signals.

[0027] Each horn antenna 6 is connected with a two-way selector switch. Among them, the two-way selector switches connected to horn antennas 6 No. 1, No. 3, No. 5 and No. 7 are connected to the lateral output one switch, and the two-way selector switches connected to horn antennas 6 No. 2, No. 4, No. 6 and No. 8 are connected to the lateral output two switch. The lateral output one switch and the lateral output two switch can be realized by an eight-way selector switch or a six-way selector switch. The lateral output one switch and the lateral output two switch are respectively connected with radio frequency output interfaces. The lateral output one switch is also connected to the four-way selector switch, and the lateral output two switch is also connected to the seven-way selector switch.

[0028] The eight horn antennas 6 are also connected to a model identification eight-way selector switch.

[0029] The four-way power divider is respectively connected to the lateral output one switch, the lateral output two switch, the seven-way selector switch and the four-way selector switch. The four-way power divider is also connected with a calibration input signal.

[0030] The radio frequency signal first passes through eight 1-of-2 switches to determine whether to select the horn antenna 6 or the dipole antenna to work (related to the respective frequency ranges of the antennas); then, through the lateral output switch selection, multiple groups of different phase relationships or amplitude relationships are formed to provide basic data for relevant direction-finding algorithms, and are input into the detection receiver in real time. Since the switching speed of the electronic switch reaches the nanosecond level, it is considered that the same signal is collected 8 times; by using the distribution relationship of the signal amplitudes obtained from these 8 collections in the antenna array, the azimuth of the signal arrival can be accurately measured. Finally, a four-way power divider completes the calibration of the system radio frequency channels of the low-frequency dipole and the high-frequency horn antenna 6.

[0031] Through the operation of the system software, the radio reconnaissance processing unit can realize functions such as searching, intercepting, analyzing, direction-finding, and distance evaluation of UAV signals, and display the detection results in real time. The data can be automatically stored in the database to support off-line query and provide evidence query for the equipment users. The system software supports alarm and can also link various countermeasure devices to counter UAVs that pose a threat to security or violate regulations and break in in a timely manner. As Figure 4 shown, the AC / DC power module, the ultra-short wave receiver module, the intermediate frequency digital signal processing module, the UAV type identification module, the walkie-talkie decoding module, the gigabit network switch, and the industrial control processing module. The ultra-short wave receiver module is connected to the intermediate frequency digital signal processing module and the antenna array, and the gigabit network switch is connected to the intermediate frequency digital signal processing module, the UAV type identification module, the walkie-talkie decoding module, and the industrial control processing module.

[0032] The software server program supports the function of being networked. The comprehensive central platform software can control and operate the equipment through relevant protocols, and the detection data or relevant information is uploaded to the central platform management software through relevant interface protocols.

[0033] Device Functions and Features

[0034] 1) Manual or automatic detection of targets can be achieved;

[0035] 2) Reconnaissance and direction-finding of high-elevation angle targets can be carried out;

[0036] 3) Long detection distance and high direction-finding accuracy;

[0037] 4) Fast spectrum search speed and short detection time;

[0038] 5) Wifi signal filtering to effectively reduce the false alarm rate;

[0039] 6) Distance evaluation of targets can be carried out to achieve rough single-station positioning;

[0040] 7) It can be networked with other reconnaissance or countermeasure devices;

[0041] 8) The device is small in size and has flexible usage methods, and can be used in vehicle-mounted, fixed, or portable modes.

[0042] Device performance indicators

[0043] 1) Reconnaissance frequency band: 20 MHz to 8000 MHz;

[0044] 2) Receiver channels: 2CH;

[0045] 3) Reconnaissance airspace: Azimuth plane 360°; Elevation plane -10° to 20° (frequency band below 1400 MHz); -10° to 60° (frequency band from 1400 MHz to 8000 MHz)

[0046] 4) Reconnaissance distance: ≥6 Km (suburbs);

[0047] 5) Direction finding accuracy: ≤3° (full frequency band, RMS, standard field test);

[0048] 6) Panoramic detection scanning speed: 60 GHz / s;

[0049] 7) Receiver intermediate frequency bandwidth: 80 MHz / 160 MHz;

[0050] 8) Single-segment target reconnaissance speed: ≤4 s@200 MHz;

[0051] 9) False alarm rate: ≤10%;

[0052] 10) Detection mode: Panoramic detection + key frequency band detection

[0053] The electronic compass provides the direction of the antenna relative to true north, and the BDS / GPS / GNSS module provides the geographical longitude, latitude, and altitude positions of the detection system.

[0054] This embodiment can monitor the frequency range of 20 MHz to 8000 MHz. In the antenna device, a broadband horn antenna 6 and a high-performance dipole antenna are designed; both of the two directional antennas have the characteristics of high gain and narrow beamwidth, which are beneficial to improving the detection sensitivity and applying the amplitude comparison and phase comparison direction finding system.

[0055] The above are only the preferred embodiments of the present invention, but the protection scope of the present invention is not limited thereto. Any modification and replacement based on the technical solutions and inventive concepts provided by the present invention should be covered within the protection scope of the present invention.

Claims

1. A high-performance radio reconnaissance device, an integrated detection and direction-finding antenna for UAV detection, characterized in that: It includes a base, a first mounting plate, a second mounting plate and a housing; The base is mounted on the base of the first mounting plate, and the second mounting plate is mounted on the top surface of the first mounting plate through support columns, and both the first mounting plate and the second mounting plate are circular; Eight horn antennas are uniformly mounted along the circumference with the center of the first mounting plate as the center of the circle, and nine dipole antenna elements are uniformly mounted along the circumference with the center of the second mounting plate as the center of the circle; The horn antennas and the dipole antenna elements are connected to a switch matrix, and the switch matrix is mounted in the middle of the top surface of the first mounting plate; the switch control of the horn antennas and the dipole antenna elements is realized by controlling the switch matrix; The housing mounts the first mounting plate and provides wide-band coverage for the switch matrix, horn antennas and dipole antenna elements.

2. The integrated antenna for detection and direction finding used in drone detection of a high-performance radio reconnaissance device according to claim 1, characterized in that: The switch matrix includes a four-way selector switch, a seven-way selector switch, a two-way selector switch, a lateral output one switch and a lateral output two switch; The four-way selector switch is connected to 3 dipole antenna elements, and the seven-way selector switch is connected to the remaining 6 dipole antenna elements; Each horn antenna is connected to a two-way selector switch, and four of the two-way selector switches are connected to the lateral output one switch, and the remaining four two-way selector switches are connected to the lateral output two switch; The lateral output one switch is connected to the four-way selector switch, and the lateral output two switch is connected to the seven-way selector switch; both the lateral output one switch and the lateral output two switch are connected to RF output interfaces.

3. A high-performance radio reconnaissance device according to claim 2, wherein the integrated detection and direction-finding antenna for UAV detection is characterized in that: The eight horn antennas are connected to an eight-way selector switch, and the eight-way selector switch is connected to a model identification interface.

4. A high-performance radio reconnaissance device according to claim 2, wherein the integrated detection and direction-finding antenna for UAV detection is characterized in that: The lateral output one switch, the four-way selector switch, the lateral output two switch and the seven-way selector switch are connected to a four-way power divider, and the four-way power divider is connected to a calibration signal input interface.

5. A high-performance radio reconnaissance device according to claim 1, wherein the integrated antenna for detection and direction finding in UAV detection is characterized in that: An electronic compass and BDS / GPS / GNSS are also mounted on the first mounting plate.

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