利用matlab产生一个雷达回波信号，模拟了信号的强度和回波时间的变化-Using matlab to generate a radar echo signal, analog signal intensity and echo time of change

瑞利分布的气象雷达回波，时频分析，功率谱密度，频谱分布。-Rayleigh distribution of meteorological radar echo time-frequency analysis, power spectral density, spectral distribution.