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本文首先介绍了NLFM信号的相位逗留原理——窗函数设计法,然后以一种典型监视雷达脉压前后的采样率、脉压后副瓣幅度与主瓣宽度指标为参考,对其在脉压处理前可能对应的波形进行了多种假设。以这些假设为基础,再通过一系列的仿真发现了一个问题,即当采用常用的相位逗留原理——窗函数法来设计NLFM信号以及其对应的脉压滤波器时,不论目标窗函数的副瓣有多低,信号经过脉压滤波器后并不能得到具备满意的低副瓣指标的输出。
In this paper, we first introduce the theory of phase staying in NLFM signal-window function design method, then take a typical monitoring radar sampling rate before and after the pulse pressure, pulse amplitude and the main lobe amplitude index as a reference, its pulse pressure There are several assumptions made about the waveforms that may be processed before processing. Based on these assumptions, we found a problem through a series of simulations. When using the common principle of phase-stay-window function to design the NLFM signal and its corresponding pulse-pressure filter, no matter what the target window function is How low the valve, the signal through the pulse compression filter and can not be satisfied with the low sidelobe index output.