GPS信号捕获算法的研究

GPS信号的捕获是GPS接收机的核心模块,它是基于码相位和多普勒频移二维搜索的过程。对于捕获模块,通常采用串行搜索算法和并行频域搜索算法。探讨几种算法的原理并分析其相应缺陷,并指出对GPS弱信号捕获的性能优良算法。

Research of GPS Weak Signal Acquisition Algorithms

GPS signal acquisition is a hard core in a GPS receiver and is the two-dimension process of the search about the code delay and Doppler frequency.For acquisition,serial algorithms and parallel frequency of the search are usually adopted.The paper discusses the principle of algorithms and analyzes the defect of algorithms.According to the analysis of algorithms,the new algorithms about advanced performance is put fowarel and the new orientation of the GPS weak signal research is proposed.