一种脉冲多普勒雷达系统及其信号处理方法

Pulse Doppler radar system and its signal processing method

Abstract

The invention discloses a pulse Doppler radar system based on multiple detection signals and a signal processing method. The pulse Doppler radar system comprises a plurality of transmitters, wherein each transmitter respectively transmits orthogonal pulse detection signals synchronously at different pulse repetition frequencies (PRF), and the PRF of different detection signals meet stagger relationship, the receiving system of airborne radar is composed of a receiver or a plurality of receivers. The signal processing method processes the echo corresponding to different transmission signals via target detection, to obtain respective target detection results. The interference accumulation time of the pulse Doppler radar can be significantly prolonged under single PRF, thereby improving target detection performance. The invention utilizes the stagger relationship among different PRF, to process ambiguity resolution treatment on the detection result having distance and Doppler ambiguity under different PRF, to obtain correct target distance and Doppler information.
本发明公开了一种基于多探测信号的脉冲多普勒雷达系统及信号处理方法,所述系统包括多部发射机,每一部发射机分别以不同的脉冲重复频率(PRF)同时发射正交脉冲探测信号,且不同探测信号间的PRF满足参差关系,机载雷达的接收系统可由一部接收机,也可由多部接收机组成。对应不同发射信号的回波被分别进行目标检测处理,得到各自的目标检测结果。本发明的脉冲多普勒雷达在单个PRF下的相干积累时间可显著延长,从而提高了目标检测性能。本发明利用不同PRF间的参差关系,将不同PRF下存在距离和多普勒模糊的检测结果进行解模糊处理,获得正确的目标距离和多普勒信息。

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Cited By (12)

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