星站差分GPS定位技术介绍

Introduction of satellite difference GPS technique

随着对GPS定位精度要求的提高 ,一些地区特别是远离基站的海上、沙漠、大山等地区 ,一般的DGPS仪器差分信号已不能覆盖 ,定位精度也不能满足要求。而星站差分GPS定位新技术 (RTG) ,采用Inmarsat卫星数字通讯网传输广域差分改正信号比较好地解决了这一难题。文中阐述了星站差分GPS定位的工作原理与差分技术 。

Along with the increasing demand on precision of GPS, in some areas, especially in deserts, at the sea and on mountains which are far away from the base station, the difference signal of common DGPS instrument can not cover these areas and precision of the positioning can not meet the demand. The new technique of satellite difference GPS (RTG) uses corrected general domain difference signal transmitted by Inmarsat digital satellite communication network can better solve the difficulty. The paper expounded the working principle and difference technique for satellite difference GPS, introduced the a part of characteristic indexes of the instrument.