| The ZDPS-1A pico-satellite made by Zhejiang University Micro-satellite Research Center was sent into orbit in September,2010, and succeeded in mission. The Center has manufactured a series of satellites which collected a great quantity of satellite telemetry data of important research value. Hence, a reliable data storage system is necessary. Otherwise, satellite telemetry data channels are too complex to distinguish, therefore, data mining method was proposed to solve the problems and to provide a reference to optimize the design of satellites. For the reason of low real-time and high cost of the previous version, a realtime satellite ground station system is required.This paper studied server dynamic backup technology, fast access method to satellite database, data transmission reliability throughly. Meanwhile, data mining cluster technology was studied and a k-means clustering optimization based on ant clonoy algorithm was applied to analyse telemetry data. Physical truth proved the feasibility of this method.A new specialized protocol was defined in this paper called SUDI, aimed at solving the problem of communication between client and server. Meanwhile, a new configuration mode was defined to provide code form, display configuration, and analysis algorithm, this mode solves the universality and extension problems in TT&C softwares before. Also to satisfy the data transmission realibility demand, this paper improved a reliable data transmission pattern based on UDP.This paper designed Zhejiang University Micro-satellite Research Center ground station, and accomplished telemetry client and data server center. And after tested the functions of this system through experiments, the performance of this software was also evaluated.The accomplishment of telemetry client and data server center established the essential foundation for expert system of satellite fault diagnosis, and provided the data interface and source for satellite telemetry data mining. |
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