GPS软件接收机弱信号捕获系统设计  

Design of a Software Receiver for GPS Weak Signal Acquisition

作　　者：王劲[1] 宋茂忠[1] 

机构地区：[1]南京航空航天大学信息学院,南京市御道街29号210016

出　　处：《武汉大学学报（信息科学版）》2010年第7期846-849,867,共5页Geomatics and Information Science of Wuhan University

基　　金：航空科学基金资助项目(20060152003)

摘　　要：通过所建立的GPS接收信号模型,从消除互相关干扰的角度出发,设计了GPS弱信号捕获系统。并通过仿真测试出相关的系统参数及系统对捕获灵敏度的改善程度。Based on a set up model of the received signal,this paper presents a system of GPS weak signal acquisition,which aimes at the mitigation of the cross-correlation interference.Focused on the two parts of interference detection and the reconstruction of strong signals,the improvement of the sensitivity of the weak signal acquisition,along with some system parameters,are derived from the simulation.The data sections from different channels are adjusted during the weak signal acquisition.Finally,the acquisition results with the real GPS data are presented.

关 键 词：GPS 弱信号 互相关消除 软件接收机 

分 类 号：P228.41[天文地球—大地测量学与测量工程]