KR20230010166A - Drone detection and tracking system - Google Patents

Abstract

The present invention relates to a drone detection and tracking system to quickly detect, identify, and track drones located at a distance and drones in various frequency bands. According to the present invention, the drone detection and tracking system comprises: an antenna support unit including a plurality of installation stages surrounding the outside at different positions; a detection unit including a plurality of directional antennas installed at each of the plurality of installation stages with different frequency bands to detect omnidirectional areas; a switching unit including a plurality of switches sequentially activating the plurality of directional antennas installed on each of the plurality of installation stages, a plurality of stage switching units installed in connection with the plurality of directional antennas at each of the plurality of installation stages to enable the plurality of directional antennas to be sequentially switched and activated at high speed, and a band switching unit connected to the plurality of stage switching units and used to select one of the plurality of stage switching units; and a control unit controlling the switching unit so that the plurality of directional antennas installed with different frequency bands at each of the plurality of installation stages are activated simultaneously and sequentially in the same direction and performing control so that the location of the drone is detected and tracked on the basis of a detection signal received from the detection unit.

Description

Drone detection and tracking system {Drone detection and tracking system}

The present invention relates to a drone detection and tracking system, and more particularly, to a drone detection and tracking system capable of detecting and tracking a drone in all directions.

Detection and identification technology in the field of anti-drone can be classified into active detection (Radar) technology and passive detection (RF detection) technology. Passive detection and identification technology does not require separate radio wave use approval because it does not emit radio waves, and is a technology that has recently increased demand because of its economic advantages. In the signal detection technology of drones, there are largely a signal direction finding method and a signal demodulation-based location detection method. Angle of arrival signal direction detection AOA (Angle OF Arrival) mainly uses CI (Correlated Interferometer) and MUSIC (MUltiple Signal Classification) algorithms. detection and identification, etc.

However, the signal direction finding method has low sensitivity due to low gain due to the configuration of a non-directional dipole antenna, so it is not suitable for mid-to-long range and drone signal detection and tracking with low radiation output, and it cannot identify the type of drone. In addition, the method through the phase comparison analysis of the signal has limitations in the digital modulation signal and high microwave frequency band. In addition, since the drone signal demodulation method is limited to commercial drones, drones not in the drone database list cannot be detected, and the signal demodulation process takes a long time, which is impractical. Accordingly, it is difficult to detect a drone signal at a medium or long distance, and it is difficult to detect, identify, and track all unmanned aerial vehicles regardless of the type of drone.

Accordingly, an object of the present invention is to provide a drone detection and tracking system capable of quickly detecting, identifying, and tracking drones located at a long distance and drones having various frequency bands.

A drone detection and tracking system according to the present invention for achieving the above object includes an antenna support having a plurality of installation ends surrounding the outside at different locations; a detection unit including a plurality of directional antennas having different frequency bands installed at each of the plurality of installation stages and detecting in all directions; A plurality of switches for sequentially activating the plurality of directional antennas installed at each of the plurality of installation stages and connected to the plurality of directional antennas at each of the plurality of installation stages, wherein the plurality of directional antennas are sequentially switched at high speed a switching unit including a plurality of single switching units to be activated and connected to the plurality of single switching units, and including a band switching unit for selecting one of the plurality of single switching units; and controlling the switching unit so that the plurality of directional antennas installed at each of the plurality of installation stages having different frequency bands are simultaneously and sequentially activated in the same direction, and detecting the drone based on the drone detection signal received from the detection unit. Includes a control unit for controlling to detect and track the position of. A plurality of directional antennas having the same frequency band are installed on each of the plurality of installation stages, and each of the plurality of installation stages has a different frequency band and can detect omnidirectional directions, thereby improving the detection distance of the drone and multi-frequency bands. By high-speed switching of a plurality of directional antennas for direction finding, signal processing speed can be improved, enabling rapid detection, identification and tracking of drones.

Here, the switching unit is connected to the plurality of directional antennas at each of the plurality of installation stages, and includes a plurality of single switching units that enable the plurality of directional antennas to be sequentially switched at high speed and activated. This is advantageous because the antenna can be switched.

Further, the switching unit is connected to the plurality of single switching units, and further includes a band switching unit for selecting one of the plurality of single switching units so that the plurality of single switching units can be sequentially switched.

Here, the switching unit is connected to the plurality of single switching units and can output a control signal for simultaneously and sequentially switching the plurality of directional antennas installed on each of the plurality of installation stages to the plurality of single switching units. If the control unit is further included, it is preferable that a plurality of directional antennas of a plurality of installation stages can be simultaneously switched at high speed.

And the switching unit is connected to the plurality of single switching units and outputs a switching control signal for simultaneously and sequentially switching the plurality of directional antennas installed at each of the plurality of installation stages to the plurality of single switching units. It further includes a control unit, and further includes a signal receiving unit that calculates the drone detection signal as a spectrum, which is received from the plurality of directional antennas installed in each of the plurality of installation stages in synchronization with the switching control signal. It is preferable because the signal can be received and processed from the directional antenna.

Here, the plurality of directional antennas are disposed radially along the outer circumference of the antenna support portion, and the plurality of directional antennas can detect in all directions, which is preferable.

In addition, when the plurality of directional antennas are installed with a detection area of a predetermined horizontal azimuth at each of the plurality of installation ends, it is preferable to accurately detect the detection area of each of the plurality of directional antennas.

Here, if two adjacent directional antennas among the plurality of directional antennas have mutually overlapping detection areas, it is preferable to avoid undetected bearings in all directions.

According to the present invention, a plurality of directional antennas having the same frequency band are installed on each of the plurality of installation stages, and each of the plurality of installation stages has a different frequency band and can detect omnidirectional directions, thereby improving the detection distance of the drone. , By high-speed switching of a plurality of directional antennas for multi-frequency band direction finding, the signal processing speed is improved, and the drone can be rapidly detected, identified, and tracked.

1 is an exemplary diagram of a drone detection and tracking system according to the present invention.
2 is an exemplary diagram of a connection line between a detection unit and a switching unit.
3 is an exemplary installation diagram of an antenna.
4 is a functional description block diagram of drone detection and tracking technology.
5 is an exemplary view of direction finding of an antenna.
6 is a detailed view of the signal analysis unit.
7 is a drone detection flowchart of the drone detection and tracking system of FIG. 7 .
8 is a control block diagram.

Hereinafter, a drone detection and tracking system 1 according to a preferred embodiment of the present invention will be described in detail with reference to the accompanying drawings.

1 is an exemplary diagram of a drone detection and tracking system 1 according to the present invention, FIG. 2 is an exemplary diagram of a connection line between a detection unit 20 and a switching unit 30, and FIG. 3 is an example of antennas 21 to 24 , Figure 4 is a function description block diagram of drone detection and tracking technology, Figure 5 is an example of direction finding of antennas 21 to 24, Figure 6 is a detailed view of the signal analysis unit 60 7 is a control block diagram.

The drone detection and tracking system (1) includes an antenna support unit (10), a detection unit (20), a switching unit (30), a signal receiving unit (40), a signal processing unit (50), a signal analysis unit (60), and a communication unit (70). , a display unit 72, a user input unit 74 and a control unit 80.

The antenna support 10 may be provided in a cylindrical shape, and has a plurality of installation ends 11 to 14 surrounding the outside at different positions. When the antenna support part 10 is provided in a cylindrical shape, the plurality of installation ends 11 to 14 may be provided in the same area in the horizontal direction or in different areas in the vertical direction, or the antenna support part 10 has an inclination. When formed in a conical shape, it may be provided in different areas with respect to the horizontal direction and the vertical direction. Preferably, the antenna support 10 is provided in a cylindrical shape inclined at a predetermined angle with respect to the vertical direction.

The detection unit 20 is installed in each of the plurality of installation stages 11 to 14 with different frequency bands and can detect in all directions. The detection unit 20 may include a plurality of single antennas 21 to 24, and each of the single antennas 21 to 24 includes a first antenna 21, a second antenna 22, and a second antenna. (23) and a fourth stage antenna (24).

The first stage antenna 21, the second stage antenna 22, the second stage antenna 23, and the fourth stage antenna 24 have different frequency bands.

The first stage antenna 21 includes the 1-1 directional antenna 211, the 1-2 directional antenna 212, the 1-3 directional antenna 213, the 1-4 directional antenna 214, and the first stage antenna 214. -5 directional antenna 215 and 1-6 directional antennas 216 may be included.

1-1 directional antenna 211, 1-2 directional antenna 212, 1-3 directional antenna 213, 1-4 directional antenna 214, 1-5 directional antenna 215, and The first to sixth directional antennas 216 may be radially arranged along the outer circumference of the antenna support 10, and may be installed at each of the plurality of installation ends 11 to 14 with a detection area of a predetermined horizontal azimuth angle, , two adjacent directional antennas may have mutually overlapping detection areas.

The second stage antenna 22 includes a 2-1 directional antenna 221, a 2-2 directional antenna 222, a 2-3 directional antenna 223, a 214 directional antenna 224, and a 2-5 directional antenna. A directional antenna 225 and second to sixth directional antennas 226 may be included.

2-1 directional antenna 221, 2-2 directional antenna 222, 2-3 directional antenna 223, 2-4 directional antenna 224, 2-5 directional antenna 225, and The 2-6 directional antenna 226 may be disposed radially along the outer circumference of the antenna support 10, and may be installed at each of the plurality of installation ends 11 to 14 with a detection area of a predetermined horizontal azimuth, , two adjacent directional antennas may have mutually overlapping detection areas.

The third stage antenna 23 includes the 3-1 directional antenna 231, the 3-2 directional antenna 232, the 3-3 directional antenna 233, the 3-4 directional antenna 234, and the third stage antenna 234. -5 directional antennas 235 and 3-6 directional antennas 236 may be included.

The 3-1 directional antenna 231, the 3-2 directional antenna 232, the 3-3 directional antenna 233, the 3-4 directional antenna 234, the 3-5 directional antenna 235, and The 3-6 directional antenna 236 may be disposed radially along the outer circumference of the antenna support 10, and may be installed with a detection area of a predetermined horizontal azimuth at each of the plurality of installation ends 11 to 14, , two adjacent directional antennas may have mutually overlapping detection areas.

The fourth stage antenna 24 includes the 4-1 directional antenna 241, the 4-2 directional antenna 242, the 4-3 directional antenna 243, the 4-4 directional antenna 244, and the 4-stage directional antenna 244. -5 directional antennas 245 and 4-6 directional antennas 246 may be included.

The 4-1 directional antenna 241, the 4-2 directional antenna 242, the 4-3 directional antenna 243, the 4-4 directional antenna 244, the 4-5 directional antenna 245, and The 4-6 directional antenna 246 may be radially disposed along the outer circumference of the antenna support 10, and may be installed with a detection area of a predetermined horizontal azimuth at each of the plurality of installation ends 11 to 14, , two adjacent directional antennas may have mutually overlapping detection areas.

Here, it is expressed that the plurality of single antennas 21 to 24 are provided in four stages, but it is not limited thereto, and the number can be increased to six stages, eight stages, and sixteen stages in different frequency bands.

In addition, the plurality of single antennas 21 to 24 are installed with six directional antennas having the same horizontal azimuth detection area of 60 degrees or more, but 9 directional antennas, 12 directional antennas, and 24 directional antennas. It may be installed by increasing the number.

If the number of directional antennas is increased, the detection distance of each directional antenna can be increased, so the detection area can be widened and the detection accuracy can be greatly increased.

The switching unit 30 may sequentially activate a plurality of directional antennas installed on each of the plurality of installation stages 11 to 14 . The switching unit 30 may include a plurality of switches, and may include a single switching unit 31, a band switching unit 32 and a switching control unit 33.

The single switching unit 31 is connected to and installed with a plurality of directional antennas (211 to 216, 221 to 226, 231 to 236, 241 to 246) at each of the plurality of installation stages 11 to 14, and the plurality of directional antennas ( 211 to 216, 221 to 226, 231 to 236, and 241 to 246) may be sequentially switched at high speed to be activated. The single switching unit 31 is controlled by the switching control unit 33 so that the plurality of directional antennas 211 to 216, 221 to 226, 231 to 236, and 241 to 246 may start switching at the same time. The stage switching unit 31 may include a first stage switching unit 311 , a second stage switching unit 312 , a third stage switching unit 313 and a fourth stage switching unit 314 .

The first stage switching unit 311 includes the 1-1 directional antenna 211, the 1-2 directional antenna 212, and the 1-3 directional antenna 21 of the first stage antenna 21 installed at the first installation stage 11. The directional antenna 213, the 1-4 directional antennas 214, the 1-5 directional antennas 215, and the 1-6 directional antennas 216 may be switched.

The second stage switching unit 312 includes the 2-1 directional antenna 221, the 2-2 directional antenna 222, and the 2-3 directional antenna 22 of the second stage antenna 22 installed at the second installation stage 12. The directional antenna 223, the 2-4 directional antenna 224, the 2-5 directional antenna 225, and the 2-6 directional antenna 226 may be switched.

The third stage switching unit 331 includes the 3-1 directional antenna 231, the 3-2 directional antenna 232, and the 3-3 directional antenna 23 of the 3 stage antenna 23 installed at the third installation stage 13. The directional antenna 233, the 3-4 directional antenna 234, the 3-5 directional antenna 235, and the 3-6 directional antenna 236 may be switched.

The fourth stage switching unit 341 includes the 4-1 directional antenna 241, the 4-2 directional antenna 242, and the 4-3 directional antenna 24 of the 4 stage antenna 24 installed at the 4th installation stage 14. The directional antenna 243, the first to fourth directional antennas 244, the fourth to fifth directional antennas 245, and the fourth to sixth directional antennas 246 may be switched.

The band switching unit 32 is connected to a plurality of single switching units 311 to 314, and can switch so that any one of the plurality of single switching units 311 to 314 can be selected and activated. When the band switching unit 32 selects and activates the first-stage switching unit 311 from among the plurality of single-stage switching units 311 to 314, the 1-1 directional antenna 211 of the first-stage switching unit 311 , 1-2 directional antenna 212, 1-3 directional antenna 213, 1-4 directional antenna 214, 1-5 directional antenna 215 and 1-6 directional antenna 216 The detection signal detected in may be transmitted to the signal receiving unit 40.

The switching control unit 33 is connected to a plurality of single switching units 311 to 314 and includes a plurality of directional antennas 211 to 216, 221 to 226, 231 to 236, and 241 installed at each of the plurality of installation stages 11 to 14. to 246) can be output to the plurality of single switching units 311 to 314 so that they are simultaneously and sequentially switched. The switching control unit 33 transmits a control signal to sequentially switch the plurality of directional antennas 211 to 216, 221 to 226, 231 to 236, and 241 to 246 at a time difference instead of simultaneously to the plurality of single switching units 311 to 246. 314) can be output. However, switching the plurality of directional antennas (211 to 216, 221 to 226, 231 to 236, and 241 to 246) simultaneously and sequentially is easy to process signals and detects and identifies the drone 2 moving at the same time. easy to track

The signal receiver 40 detects drones received from a plurality of directional antennas 211 to 216, 221 to 226, 231 to 236, and 241 to 246 installed in each of the plurality of installation stages 11 to 14 in synchronization with the switching control signal. The signal can be calculated as a spectrum.

The signal processing unit 50 processes detection signals from the plurality of directional antennas 211 to 216, 221 to 226, 231 to 236, and 241 to 246 transmitted from the signal receiving unit 40 and transmits them to the signal analysis unit 60. can

The signal analysis unit 60 may derive the direction angle of the drone 2 by analyzing the signal-processed detection signal.

The communication unit 70 may transmit/receive data with an external device.

The display unit 72 may display the processing and processing results of the signal processing unit 50 and the signal analysis unit 60 and the analysis process and analysis results so that the user can check them.

The user input unit 74 may input a user command. When setting or changing a command for setting switching or a setting for analysis, a user command may be input.

The control unit 80 controls the plurality of directional antennas 211 to 216, 221 to 226, 231 to 236, and 241 to 246 installed with different frequency bands on each of the plurality of installation stages 11 to 14 in the same direction simultaneously. The switching unit 30 is controlled to be sequentially activated, and the location of the drone is detected and tracked based on the drone detection signal received from the detection unit 20.

The controller 80 controls the plurality of switches 31 to 33 so that the plurality of directional antennas 211 to 216, 221 to 226, 231 to 236, and 241 to 246 are sequentially activated, and receives signals from the detection unit 20. Based on the detected drone detection signal, the position of the drone 2 may be detected and controlled to be tracked.

2 is an exemplary diagram of a connection line between the detection unit 20 and the switching unit 30.

The band switching unit 32 is a switch for selecting signals from the plurality of single switching units 311 to 314 composed of each band of 400 MHz, 900 MHz, 2.4 GHz, and 5.8 GHz to the signal receiving unit 40 for each band. The band switching unit 32 may sequentially operate the switching of the plurality of single switching units 311 to 314 in order to perform high-speed switching.

The switching controller 33 has a limited number of physical ports that control the antenna switch in the signal receiver 40, so 6 antennas of 4 bands are selectively selected from one control port of the signal receiver 40. It can be connected to switch to . Since control input signals from the signal receiver 40 are equally output to 4 ports, signals detected by 6 antennas in 4 bands can be processed in parallel.

Therefore, the CTL of the band switching unit 32 (RF Switch5) connected to the signal receiving unit 40 EXP1 and EXP2 and each single switching unit ( RF Switch CTL) may be synchronized.

The signal receiving unit 40 may perform a function of calculating and outputting a spectrum trace of a detection signal received from each antenna in synchronization with an antenna control signal, and using a frequency signal method, that is, a Fast Fourier Transform (FFT) method. It can perform a spectrum analyzer function, and up to a plurality of single switching units (311 to 314, RF Switch 1 to 4) through a band switching unit (32, RF Switch5) and a switching control unit (33, Switch hub). may be responsible for the control of

3 is an exemplary installation view of the antennas 21 to 24.

Directional antennas having the same frequency band are radially arranged along the outer circumference of the antenna support 10 with a detection area having a predetermined horizontal azimuth angle. A directional antenna may be equally installed in each of the plurality of installation stages 11 to 14 . Alternatively, a different number of directional antennas may be installed in each of the plurality of installation stages 11 to 14.

For example, six directional antennas are installed in the first stage antenna (21, 400 MHz) installed in the first installation stage 11, and nine directional antennas are installed in the second stage antenna (22, 900 MHz) installed in the second installation stage 12. A directional antenna may be installed, and the 3rd stage antenna (23, 2.4GHz) installed at the 3rd installation stage 13 may have 12 directional antennas installed, and the 4th stage installed at the 4th installation stage 14 As for the antenna (24, 5.8 GHz), six directional antennas may be installed. This is because the frequency bands of the most frequent drones 2 may be 2.4 GHz and 900 MHz, so the number of directional antennas is increased in consideration of this.

4 is a block diagram illustrating the function of a drone detection and tracking technology, and FIG. 5 is an example of direction finding of antennas 21 to 24.

The signal processing unit 50 may play two main roles: a signal monitoring function and a signal direction tracking function.

Monitoring for signal detection can simultaneously perform a function of generating a vector spectrum of a signal and a function of demodulation through channel scanning of a signal.

6 Array antennas for each detection band signal frequency band by determining whether there is a drone signal through sequential spectrum processing for high-speed switched data (over 200,000 bin data/sweep) and determining the occupancy rate of each signal and the pattern type of the signal Calculate a precise angle of attack (AOA bearing angle) through vector synthesis for 4096 FFT (Fast Fourier Transform) sample data coming from . Spectrum processing of each band is performed simultaneously in parallel, and more than 200,000 data for detection channels are selected and reduced to 4096, and vector summation is performed on all 6 array data, and one set of data strings (each bin By calculating the size, angle, and quality), the direction detection and location focus calculation (geolocation) results are derived. At the same time, drone signal detection and identification are performed through demodulation of each IQ channel data.

4 is a block diagram illustrating the function of drone detection and tracking technology, and FIG. 6 is a detailed view of the signal analysis unit 60.

After the vector spectrum-processed signal is detected, the signal analysis unit 60 compares the pattern format of the signal for the corresponding signal band with a stored signal pattern library, performs drone identification, and performs location tracking and processing for this. to process

Here, the stored signal pattern library may be data on a signal pattern for the irradiated drone 2 . While detecting the drone 2, this signal pattern may be continuously upgraded. Also, this signal pattern library may be stored in the control unit 80 or may be stored in an external storage.

At the same time, through signal demodulation, the drone signal identification is compared with the drone characteristics (Fingerprint DB library), and after the final determination of identification is made, drone information for drone location tracking is added. Accordingly, the accuracy and interception probability (POI) of drone detection and identification are improved.

In the signal processing process for detecting and tracking drone signals, incident waves arriving from different directions in the same frequency band affect the calculation of the angle of attack (AOA bearing angle), so filtering is required in terms of signal amplification and phase. It improves the accuracy of intercept probability (POI) and direction angle derivation.

Signals of noise and interference components coming in from all directions in the detection frequency band are primarily filtered to within 95% of the main signal having Gaussian distribution characteristics, and the direction finding quality (DF quality) of each bin ) (%) to improve accuracy by filtering data for angles that are 180 degrees symmetrical to each antenna.

Mutual correction is performed through probability comparison of drone coordinates and altitude values, which are results of analog direction finding and protocol analysis of drone signals.

The abbreviations of FIG. 6 are explained below.

Angle of Attack (AOA): Angle of Arrival, Direction Finding (DF): Direction Finding, MSDF: Multi-array Super-resolution Direction Finding, NCP: Node Command Protocol, Intercept Probability (POI): Probability of Intercept.

7 is a drone detection flowchart of the drone detection and tracking system.

The entire bandwidth of the signal used by the drone 2 is scanned in real-time bandwidth by the IQ channel scanning method (S1).

The received radio signal is converted into radio data using fast Fourier transform (FFT), and spectrum data is calculated (S2).

Analyze the signal share and pattern of the drone wireless signal (S3).

According to the analysis result, it is determined whether the radio signal is the signal of the drone 2 (S4).

If it is judged to be an illegal intruding drone 2, the angle of arrival of the signal emitted by the drone 2 is calculated (S5).

It is determined whether the radio signal scanned in step S1 is demodulated and decoded (S6).

If the radio signal scanned in step S6 is not demodulated, the IQ radio signal pattern is analyzed (S7).

When the radio signal scanned in step S6 is demodulated, the drone signal is demodulated (S8).

A drone signal is identified using at least one of the IQ radio signal pattern analyzed in step S7 and the drone signal demodulated in step S8 (S9).

The drone is detected using at least one of the angle of arrival of the radiated signal calculated in step S5 and the drone signal identified in step S9 (S10).

Here, the step of determining whether the radio signal is demodulated and decoded in step S6 includes extracting a carrier frequency from the radio signal, estimating a frequency and timing offset from the extracted carrier frequency, and Compensating for the offset of the radio signal based on the offset, performing digital equalizing using an adaptive filter on the compensated radio signal, demodulating the digitally equalized radio signal into an RF signal (RF demodulation), searching for an SFD index (Start frame delimiter index) in the demodulated radio signal, and performing protocol decoding on the demodulated radio signal in binary form from the searched SFD index (Start frame delimiter Index) A step of determining whether decoding is possible may be included.

Modifiable embodiments other than the above embodiments will be described.

In the above, the plurality of directional antennas (211 to 216, 221 to 226, 231 to 236, 241 to 246) of the plurality of single antennas 21 to 24 are only a fixed number and can be installed by increasing in some cases However, a plurality of single antennas may be formed in stages 6 to 8 instead of 4. In this case, only the 4th stage is activated to detect the drone, and in some cases, the 6th to 8th stages are immediately activated to detect the drone. That is, when the alert and detection level of the external drone is low, a plurality of single antennas 4 are operated, and when the alert and detection grade of the external drone is high, a plurality of single antennas 6 to 8 are operated. You may.

Although six directional antennas are installed in a plurality of single antennas in a similar concept to the above, 9 to 12 or 24 directional antennas may be installed. That is, when the alert and detection level of the external drone is low, six directional antennas may be activated and operated, and when the alert and detection grade of the external drone are high, six directional antennas may be activated and operated.

In the above embodiment, a fixed drone detection and tracking system is provided, but a drone detection and tracking system may be installed in a movable drone to detect the drone. In the case of detecting a drone in a fixed drone detection and tracking system, if the external drone detection is not accurate due to the detection distance, the movable drone detection and tracking system may be moved to detect the drone.

Due to the drone detection and tracking system 1, a plurality of directional antennas having the same frequency band are installed in each of the plurality of installation stages, and each of the plurality of installation stages has a different frequency band and can detect omnidirectional The detection distance of the drone can be improved, and the signal processing speed can be improved by high-speed switching of a plurality of directional antennas for multi-frequency band direction finding, so that the drone can be quickly detected, identified, and tracked.

1: Drone detection and tracking system 2: Drone
10: antenna support 11: first installation end
12: 2nd installation stage 13: 3rd installation stage
14: 4th installation stage
20: detection unit 21: first stage antenna
22: second stage antenna 23: third stage antenna
24: fourth stage antenna
30: switching unit 31: single switching unit
32: band switching unit 33: switching control unit
40: signal receiving unit 50: signal processing unit
60: signal analysis unit 70: communication unit
72: display unit 74: user input unit
80: control unit

Claims (8)

In the drone detection and tracking system,
An antenna support having a plurality of installation ends surrounding the outside at different locations;
a detection unit including a plurality of directional antennas having different frequency bands installed at each of the plurality of installation stages and detecting in all directions;
A plurality of switches for sequentially activating the plurality of directional antennas installed at each of the plurality of installation stages and connected to the plurality of directional antennas at each of the plurality of installation stages, wherein the plurality of directional antennas are sequentially switched at high speed a switching unit including a plurality of single switching units to be activated and connected to the plurality of single switching units, and including a band switching unit for selecting one of the plurality of single switching units; and
Controls the switching unit so that the plurality of directional antennas installed at each of the plurality of installation stages having different frequency bands are simultaneously and sequentially activated in the same direction, and detects the drone based on the drone detection signal received from the detection unit. A drone detection and tracking system including a control unit that controls to detect and track a location.
According to claim 1,
The switching unit,
A drone detection and tracking system including a plurality of single switching units installed in connection with the plurality of directional antennas at each of the plurality of installation stages and enabling the plurality of directional antennas to be sequentially switched at high speed and activated.
According to claim 2,
The switching unit,
A drone detection and tracking system connected to the plurality of single switching units and further comprising a band switching unit for selecting one of the plurality of single switching units.
According to claim 2,
The switching unit,
A drone further comprising a switching control unit connected to the plurality of single switching units and capable of outputting a control signal for simultaneously and sequentially switching the plurality of directional antennas installed at each of the plurality of installation stages to the plurality of single switching units detection and tracking system.
According to claim 2,
The switching unit,
It is connected to the plurality of single switching units and further includes a switching control unit capable of outputting a switching control signal to the plurality of single switching units so that the plurality of directional antennas installed at each of the plurality of installation stages are simultaneously and sequentially switched, ,
The drone detection and tracking system further comprises a signal receiver configured to calculate the drone detection signal received from the plurality of directional antennas installed at each of the plurality of installation stages as a spectrum in synchronization with the switching control signal.
According to claim 1,
The plurality of directional antennas are radially disposed along the outer circumference of the antenna support.
According to claim 6,
The plurality of directional antennas are installed with a detection area of a predetermined horizontal azimuth at each of the plurality of installation ends.
According to claim 7,
A drone detection and tracking system wherein two adjacent directional antennas among the plurality of directional antennas have mutually overlapping detection areas.

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