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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．
In this paper, we analyze the fact that ground clutter should cause the radar echo signal broadening in the case of low top-view angle. For the pseudo-code phase modulated continuous wave radar, the echo signal at a certain moment will be the echo that has been broadened in the previous period At this moment, an iterative method to calculate the echo of phase-modulated continuous-wave radar is proposed. Based on the previous research on the characteristics of clutter, we consider the spatial and temporal differences between different resolving units The time-dependent characteristics of the clutter echo of this system are studied and the computer simulation is carried out. The results show that the temporal correlation of other clutter will be enhanced compared with the pulse radar.