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System and method for detecting dynamic RCS and frequency domain of unmanned aerial vehicle

A detection method and technology of unmanned aerial vehicles, applied in the field of radio detection, can solve the problems of undetectable dynamic RCS and frequency domain of unmanned aerial vehicles

Active Publication Date: 2020-01-10
闫军
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The present invention provides a dynamic RCS and frequency domain detection system for unmanned aerial vehicles, aiming at solvin

Method used

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  • System and method for detecting dynamic RCS and frequency domain of unmanned aerial vehicle
  • System and method for detecting dynamic RCS and frequency domain of unmanned aerial vehicle
  • System and method for detecting dynamic RCS and frequency domain of unmanned aerial vehicle

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Embodiment 1

[0080] Such as Figure 1-2 As shown, a kind of unmanned aerial vehicle dynamic RCS and the detection system of frequency domain that the present embodiment provides, comprise: vector network analyzer 7, have at least one first channel module for transmitting signal, and have one for receiving signal The second channel module; the spectrum analysis component 5, which includes a signal source module and the receiver module; the turntable 9 component, including the turntable 9 and the turntable controller 8, the turntable 9 is used to carry the unmanned aerial vehicle, the The turntable controller 8 is used to step control the rotation of the turntable 9; the transmitting antenna 3 is connected to the first channel module and the signal source module respectively; the receiving antenna 4 is connected to the second channel module and the receiver module respectively High-speed camera 2, described high-speed camera 2 is connected with described vector network analyzer 7 signals, to...

Embodiment 2

[0088] Such as Figure 8 as shown, Figure 8This embodiment of the present invention provides a flowchart of a method for detecting UAV dynamic RCS based on the system described in Embodiment 1. The detection method of the dynamic RCS of the UAV is carried out in a microwave anechoic chamber. The detection method of this unmanned aerial vehicle dynamic RCS comprises steps:

[0089] S101. Place the unmanned aerial vehicle in a microwave anechoic chamber, and start the unmanned aerial vehicle to make its rotor rotate.

[0090] Specifically, the UAV is fixedly placed on the turntable, and can also be fixedly placed on the top of the bracket on the turntable. In this way, the position of the UAV is coordinated with the positions of the transmitting antenna, receiving antenna, high-speed camera, etc., and information exchange can be carried out more effectively. When the UAV's rotors are not activated, the UAV can be called a static UAV. After the drone is fixed, you can contr...

Embodiment 3

[0106] Such as Figure 9 As shown, on the basis of Embodiment 2, the embodiment of the present invention also provides another flow chart of a detection method for UAV dynamic RCS based on the system described in Embodiment 1; the detection method for UAV dynamic RCS also includes step:

[0107] S201. Setting the parameters of the vector network analyzer.

[0108] S202. Calibrate the vector network analyzer according to the parameters of the vector network analyzer.

[0109] The parameter settings of the vector network analyzer must meet the microwave anechoic chamber conditions and the target RCS test requirements. Taking the Ku-band test as an example, the parameters of the vector network analyzer are set as follows: scanning range 12-18GHz, scanning bandwidth B=6Ghz, number of sampling points N, frequency resolution △f=B / N, time-domain dynamic range △t=1 / (△f), the maximum measurement distance in space L=(c*△t) / 2, the distance resolution, the vector network analyzer adop...

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Abstract

The invention belongs to the technical field of radio detection, and particularly relates to a system and a method for detecting the dynamic RCS and the frequency domain of an unmanned aerial vehicle.The system for detecting the dynamic RCS and the frequency domain of the unmanned aerial vehicle comprises a vector network analyzer, a frequency spectrum analysis component, a turntable component, atransmitting antenna, a receiving antenna, a high-speed camera and a computer, wherein the vector network analyzer is at least provided with a first channel module for transmitting signals and a second channel module for receiving signals; the frequency spectrum analysis component comprises a signal source module and a receiver module; the turntable component comprises a turntable and a turntablecontroller, the turntable is used for bearing the unmanned aerial vehicle, and the turntable controller is used for controlling the turntable to rotate in a stepping mode; the transmitting antenna isrespectively connected with the first channel module and the signal source module; the receiving antenna is respectively connected with the second channel module and the receiver module. The system solves the problems that only the RCS of a static target can be detected and the dynamic RCS and the frequency domain of the dynamic target, especially, the dynamic RCS and the frequency domain of theunmanned aerial vehicle are not detected in the prior art.

Description

technical field [0001] The invention belongs to the technical field of radio detection, and in particular relates to a dynamic RCS and frequency domain detection system and method of an unmanned aerial vehicle. Background technique [0002] Currently, the rotors of consumer-grade multi-rotor drones are considered to have little contribution to the RCS (Radar Cross Section) of the drone. The radar cross-sectional area RCS is a physical quantity that quantitatively characterizes the scattering intensity of a target. Based on doubts about the above data and conclusions, it is necessary to re-evaluate the RCS and rotor contributions of UAVs. In addition, the rotation of the drone's rotor will also modulate the echo and mark the special rotor modulation effect in the frequency spectrum. In the prior art, it is a common method to measure the RCS of a target using a vector network, but this method is generally used to measure the RCS of a static target, and hardly measures the dy...

Claims

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Application Information

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IPC IPC(8): G01S13/88G01S7/41G01S7/40
CPCG01S13/88G01S7/41G01S7/40G01S7/4052
Inventor 闫军
Owner 闫军
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