本程序实现了雷达回波的模拟（LFM）及其傅里叶变换，可以让初学者感受雷达回波的处理过程。(This program implements the radar echo simulation (LFM) and its Fourier transform, which allows beginners to feel the process of radar echo)

对舰船目标回波信号进行分析，并对信号进行多普勒频移，脉冲展宽等研究，最终构建回波信号(The echo signal of ship target is analyzed, and the Doppler frequency shift and pulse broadening are studied. Finally, the echo signal is constructed.)