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In order to improve operation scientifically,new-type Doppler radar and SSS (RS, GIS, GPS) technology are used in rain enhancement to command the rocket vehicle in real time and flexibly. Based on the analysis of local weather characteristics, radar echo features and the up-to-date technology, discussed are some crucial issues relevant to the utilization of Doppler radar in cloud seeding such as the choice of target clouds, the estimation of catalyzing potential, identification of catalyzing opportunity and the determination of catalyziong points, etc. An new technical operation method is presented, including rocket monitoring, index identification, operational parameter formation and effectiveness feedback, etc., and a technical procedure was proposed, in which SSS technology was adopted to trace and control operation vehicles in real time and scientifically.