GPS信号被延时后对定位影响的仿真分析  

Simulation Analysis on the Affection of Positioning after GPS Signals Delayed

作　　者：华健江[1] 

机构地区：[1]中国电子科技集团公司第三十六研究所,嘉兴314033

出　　处：《电子对抗》2011年第2期5-9,共5页Electronic Warfare

摘　　要：根据GPS接收通道跟踪环对信号实施跟踪解调的原理，分析了经过人为与自然延时的信号被接收机跟踪解调的必要条件。再根据GPS定位原理和定位求解方程，对被人为与自然延时的信号进入接收机进行定位解算后，信号延时值变化与接收机定位偏差之间的关系进行了仿真分析。Based on the tracking and demodulating principles of GPS receiving channel tracking loops, the requirements which the delayed signals can be tracked and demodulated by receiver are an- alyzed. According to the GPS positioning principles and positioning equation, after the delayed signals coming into the receiver and positioning calculated by the receiver, the error between the actual posi- tion information with the position information calculated by the receiver is analyzed by simulation.

关 键 词：跟踪环 定位 延时 偏离距离 

分 类 号：P228.4[天文地球—大地测量学与测量工程]