Abstract:  Multithread technology can be applied to solve the problem that the data stream of space Tracking Telemetry and Command (TT&C) network is difficult to be segmented and saved into files when multiple space targets are tracked by multiple space TT&C stations. Firstly, the model of the data stream in space TT&C network is analyzed and the conception of data segmentation is presented. Then, the necessity and possibility of using multithread technology are explained. At the same time, the method of data segmentation and data file generation is proposed by using the waiting mechanism of multithread synchronous object, and the key program code of the application is given. The practical application and the test show that the lossless data segmentation can be realized by this method in processing the data stream of space TT&C station and generating data file, and the method is high reliable and real-time.
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Key words: space TT&C network, multithread, data stream, data segmentation, synchronous object