Research On The Influence To Satellite Communication System Performance Caused By The Broad Band And Fast Frequency-hopping Synthesizer

This thesis takes the Research on Influence to Satellite Communication system Performance Caused by the Broad Band and Fast Frequency-hopping Synthesizer as the main content. First the paper narrates characteristic and the superiority of the FH satellite communication system, and simply introduces the basic principle of the FH system, phase noise definition and measure method, as well as the basic principle of the modulation demodulation mode suitable for the system. Next, analyzes the influence to the system caused by the inspiring source's phase noise, includes the system performance worsening analysis aroused by the phase noise, the error rate's approximate calculation caused by the phase noise, as well as the frequency spectrum expansion analysis caused by the phase noise. Once more, proposes two kinds of satellite communication schemes taking QDPSK and MSK as the modulation demodulation mode, establishing the corresponding simulation models to these two schemes, and carries on the corresponding analysis and compares, obtains the feasible design proposal at the end, and provides the technology supports for the design plan. Finally, proposes the FH Satellite Communications improved plan.