| This thesis studies the Satellite Positioning and Navigation system by the application of Software Radio framework. An efficient hardware and software module of the receiver of this system is put forward and some useful study results are obtained. Based on the Software Radio framework succeeded used in 3G mobile communication systems, the thesis introduce the framework in the receiver research of the Satellite Positioning and Navigation system, give emphasis to the application of DDC and DSP, establish an digital IF Software Radio framework. Use the method of Object Oriented to analysis the software of Satellite Positioning and Navigation receiver system and present a kind of scientific software module map. Employ the software of MATLAB and SystemView to resolve some problems that refer to simulate demodulation and recover spread spectrum signal, and present relevant arithmetic. Realize and optimize absolute positioning calculation on TMS32OC62O1EVM board. The study of this paper in4icate that the application of digital IF Software Radio framework is practicable in the receiver of the Satellite Positioning and Navigation system. It can provide some reference worth to expand the application field of Software Radio and study the framework of the Satellite Positioning and Navigation receiver system. |
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