双极化多普勒天气雷达测速精度的模拟分析

Simulation Analysis of Dual-polarization Doppler Weather Radar Velocity Measurement Precision

通过数值模拟的方法分别得到同时发射方式和交替发射方式下的双极化多普勒天气雷达的回波信号 ,并利用模拟的回波信号分析了交替发射方式下的测速精度 ,结果表明 :在忽略粒子形状和相态的相互影响的情况下 ,形状对测速精度的影响较小 ,相态和回波信噪比对测速精度的影响较大。

Based on numerical modeling, the two polarization echoes for two working modes are obtained respectively,and the velocity precision for the alternative transmission mode is analyzed. it is shown that if the mutual influence between the shape and the state is ignored, influence of shape on the precision is less than the echo S/N and working modes.