长二相码准连续波雷达信号脉压及多目标影响

提出了一种高占空比长二相码准连续波雷达体制,并就其中的信号处理问题展开了讨论。该体制雷达采用前后截断回波信号处理方式,当接收部分回波信号后就对目标进行检测,解决了收发隔离和盲距问题。重点研究了长序列调相信号多目标对脉冲压缩的相互影响及其处理方法。采用限幅脉压可以抑制近距离大目标对远距离小目标的严重干扰。

Radar signal processing for long phase-coded pseudo-continue waveforms

A pseudo-continue waveform system of long two-phase code with a high duty ratio is presented and its signal processing is discussed. Since the echo signals are partly received, this radar system has detected the target adopting the processing mode of blocking echo signal before and after, and the problems of the isolation between transmitter and receiver and blind range are solved. The interference and its processing method of long sequence phase-modulation signal of multitargets in pulse compression are studied emphatically. Using pulse compression of amplitude limit the serious interference of big target of close range in little larget of distant range can be restrained.