基于FFT的GPS接收机伪码捕获算法研究

A FFT-based Code Acquisition Algorithm in Despread-spectrum Algorithm of GPS Receiver

分析了导航GPS接收机扩频接收算法对伪码捕获法的要求．针对最大似然估计串行二维码捕获法在GPS接收算法应用中的缺点,提出基于FFT算法的GPS伪码捕获方案,给出了详细的捕获算法流程,并结合仿真结果对其进行了详尽的分析,该方案对GPS快速码捕获算法的研究提供了新思路．

The request of PN code acquision for the despread algorithm of navigation GPS receiver is analyzed and to overcome the shortcomings of MLE algorithm and the FFT - based GPS PN code acquisition algonithm. The details of acquisition procedure are given and analyzed With the help of the somulation result,providing new for the research of fast GPS code acquisition. thought