多谱勒天气雷达系统建模与仿真

his paper focuses on the whole system of Doppler Weather radar, designs radar receiver simulation modeling in detail, being committed to New Generation Doppler Weather Radar teaching activities and deepen the students understanding of radar systems . With reference to WSR98D/XD, received clutter and noise are simulated by white noise and Rayleigh noise in atmospheric environment. Echo signal is converted to digital signal by using Zero-order holder; digital frequency Radar Receiver is designed by using Cascaded Integrator-Comb (CIC) filters; FIR filter is used to improve the Signal –Noise ratio (SNR); Doppler information is extracted by Pulse-Pair Processing algorithms. Finally, PPI products of echo signal Power and Doppler average velocity are displayed.