Radar signal processing method

Abstract

The invention discloses a radar signal processing method and belongs to the field of signal processing. The method comprises the following steps of: receiving an echo signal which is formed after an emitting signal is reflected by a flying target; converting the echo signal into a baseband signal; performing preset signal processing operation on the baseband signal, thereby acquiring a target signal corresponding to the flying target, wherein the preset signal processing operation at least comprises fast fourier transform FFT treatment and two-dimensional constant false alarm rate CFAR detection; and confirming a motion trail and/or motion trend of the flying target according to the target signal. The problems of high omission ratio and false alarm probability when the radar is used for monitoring the flying target characterized by low flight altitude, small volume and low speed can be solved. The effects of reducing the omission ratio and false alarm probability and increasing the precision for positioning and tracking the flying target are achieved.

Description

technical field [0001] Embodiments of the present invention relate to the field of signal processing, and in particular to a radar signal processing method. Background technique [0002] With the popularity and application of flying targets such as drones, delta wings, paragliders, hot air balloons, and model aircraft, there is an urgent need for detection and tracking of such flying targets. [0003] In the related technology, the radar sends out the transmission signal, and then receives the echo signal reflected by the flying target, uses pulse compression technology and coherent accumulation technology to process the echo signal, obtains the information of the flying target, and then according to the flying target information for early warning. [0004] However, this type of flying target has the characteristics of low flying height, small size, and slow speed, and is easy to hide in ground clutter, and the small RCS (Radar Cross-Section) also makes this type of flying ...

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Problems solved by technology

[0004] However, this type of flying target has the characteristics of low flying altitude, small size, and slow speed, and is easy to hide in ground clutter, and the small RCS (Radar Cross-Section) also makes this type of flying target difficult to be detected. Radar detection, resulting in a high probability of missed detection and false alarm during monitoring

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