Based On The Dsp Research And Development Of The Gps Satellite Receiver

Global Position System (GPS) is a new generator of precious satellite navigation and orientation system. Due to globality, all-weather and continuum realtime three-dimensional orientation, it has been widely developed in the fields of military and civil aviation. Recently, through the development of sience and technology, the technology of navigation and orientation has been progressed to the direction of great precision and dynamic. GPS receivers belong to the user equipment, mainly used to receive satellite signals and telegraphese, measure the distance from receiver to the satellites by the wireless signals, compute the position and speed of satellites by telegraphese, then compute the position and speed of user. Now, most GPS receivers are second developed on the modules of positioning from other countries. With the wide application of GPS locating, we need thoroughly research GPS positioning system, and do our best to make contribution to the positioning and navigation industry of our country.The article is based on the project research and development of GPS satellite receiver, which expatiate the principle and development process of receiver. It also describes the development of main modules based on TMS320C6713DSP of TI in detail. It makes use of resource of the chip, realizes the development of every module, achieves distilling of telegraphese, builds up new frame, calculates the position and provides external interface. In the section of calculating the position, the author combines the two measures of carrier phase position and code position. Finally, in the platform of Matlab, the author completes the function simulation of main modules. And the charts of simulation results show the precision enhancement with the carrier phase smooth measure instead of code measure position.