Angle measurement method of UAV detection radar based on frequency scanning antenna

Abstract

The invention discloses an angle measurement method of a UAV detection radar based on a frequency scanning antenna, belongs to the field of UAV detection technology, and is suitable for UAV detectionand capable of improving angle measurement accuracy, saving development cost, and reducing development cost while improving the angle measurement accuracy of the radar system for low-altitude slow small targets such as UAVs. The main idea comprises: determining a frequency scanning antenna and obtaining echo signals after D-channel low-frequency sampling according to the frequency scanning antenna; setting D as a positive integer; obtaining the distance and Doppler information of a UAV target according to the echo signals after the D-channel low-frequency sampling; and obtaining the azimuth angle of the UAV target according to the distance and Doppler information of the UAV target, wherein the azimuth angle of the UAV target is an angle measurement result of the UAV detection radar based on frequency scanning antenna.

Description

technical field [0001] The invention belongs to the technical field of unmanned aerial vehicle detection, and in particular relates to an angle measurement method for an unmanned aerial vehicle detection radar based on a frequency scanning antenna, which is suitable for unmanned aerial vehicle detection, can improve angle measurement accuracy and save development costs. Background technique [0002] The opening of low-altitude airspace poses new challenges to ground military and civilian radar target detection technology. At present, there is no effective means for low-altitude target detection in China, and problems such as low-altitude control and security need to be resolved urgently. The rapid development and wide application of low-altitude, slow-speed and small-target technology represented by unmanned aerial vehicles has brought new challenges to national security. effective monitoring. [0003] Low-altitude, slow-moving, and small targets represented by unmanned aer...

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Problems solved by technology

[0004] In view of the deficiencies in the prior art, the object of the present invention is to propose a method for measuring the angle of UAV detection radar based on frequency scanning antenna. At the same time, aiming at the defect of low angle measurement accuracy of existing frequency scanning antennas, a design scheme of area array radar based on frequency scanning antennas based on digital beam forming (DBF) system is proposed, which reduces development costs and improves radar system performance Angle measurement accuracy of low-altitude slow-speed small targets such as UAVs

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