The improved window probability matching method and self-adaptive Kalman filter and variational approach method were used to make rainfall estimation and evaluation of the data from the two Doppler radars of new generation(CINRAD/SA) in Zhengzhou and Sanmenxia and ground automatic rain gauge data respectively,and the rainfall mosaic of the two radars rainfall estimation was realized.The evaluation results show that for the radar rainfall measurement,the experience relationship obtained from the improved win...