Research On Control And Detection Of Satellite Ground Based On Software Radio

The function of the traditional satellite control equipment was fixed and single.In addition,Its device was also very bulky and complexity.So it could not meet the new demands of the modern satellite monitoring technology.To solve this problem,we used software radio technology to develop the satellite control system.Against a background of a certain type satellite's research and under the guidance of software radio technology,this thesis researched the IF digital receiver which worked in satellite ground control stations. On this basis,I finally realized the demodulation of BPSK signal.In this paper,we first introduced the satellite control technology,software radio technology and IF digital technology.Next,according the requirements and technical specifications of the IF digital receiver system,we proposed the design of satellite telemetry system which based on software radio technology.Moreover,we discussed the design's working principle,function and implementation.The IF digital receiver system had two major components which were IF high-speed acquisition module and IF digital signal processing module. In this paper we had carried out detailed design of them. IF high-speed acquisition module's design included a wide range of contents,such as the introduction of the main device,calculation of relevant parameters,hardware schematics design, printed circuit board design,etc.IF digital signal processing module was used to complete the demodulation of BPSK signal,which was consisted of extractor,low-pass filter,costas carrier synchronization and so on.After devising the system,we also analyzed the test results simply.At last,I summarized my main work,pointed out the future work and improvements.The preliminary research results of the paper had many advantages,such as large dynamic range, high sampling precision, flexibility function, lower cost and so on.It also laid a solid foundation for satellite ground telemetry system that based on software radio.At the same time,it had a good reference to the applications which used software radio technology.