An 8radar network located at Hefei, Fuyang, Bengbu, Huangshan, Nanjing, Xuzhou, Zhumadian and Jiujiang is used to establish the regional mosaic of Anhui Province. By using GIS and geographical space conversion, the radar echo images at heights of 2-8 km are obtained. According to the rocket trajectory equations, the rocket elevation, azimuth and the ammunition amount used are calculated, and the technique parameters of weather modification are precisely analyzed.