摘要
本文分析了在低俯视角情形时地杂波要引起雷达回波信号展宽的事实，对于伪码调相连续波雷达来讲，某一时刻的回波信号将是此前一段时间内展宽的回波在此时刻的迭加，提出了计算伪码调相连续波雷达回波信号的迭加方法，在以往对地杂波特性研究结果的基础上，同时考虑不同分辨单元间在空间和时间上的相关性质，研究该体制雷达地杂波回波信号的时间相关特性，并进行了计算机模拟，结果表明，与脉冲雷达相比，其他杂波的时间相关性将增强．
It is pointed out that the land clutter, when the radar grazing ange is low, will cause the time spread 0f radarecho signal, For the pseudo-random code continuous wave (PRG-CW) radar, the echo signal at a specified moment will be thesuperpostion of some spread echo signals in a period of time before this specified moment. A superposition algorithm was proposed to calculated the PRC-CW radar signal. Based on the former results on the characterstics of land clutter, and consideringtemporal and spatial correlation charateristics between defferent resolution cells, the temporal correlation characteristics of theecho signal of land clutter for the PRG-CW radar are investigaed with simulation method. The results indicate that the echosignal of land clutter for PRG-CW radar is more corrlated than that for pulse radar.
出处
《电子学报》
EI
CAS
CSCD
北大核心
1999年第12期92-94,共3页
Acta Electronica Sinica
基金
航天工业总公司九五预研项目!46.2.3/A960804-02
