基于频谱细化的线性调频信号的参数估计。首先对中频信号延时相乘然后对产生的序列做FFT，初步算出LFM信号的调频斜率，然后用CHIRP-Z变换精确估计。-Estimated based on the parameters of the linear FM signal spectrum refinement. First of delay multiplied by the IF signal and then do the FFT on the resulting sequence, initi

作为信号源周期性的发射信号，周期为一秒，所发信号波形为先是LFM波接着CW脉冲，连接DA模块使用。(As the signal source, the periodically transmitted signal has a period of one second, and the signal waveform is first LFM wave and then CW pulse, which is connected to the DA module.)