摘要
一般导航系统单点定位精度只有15m左右,不能满足某些要求定位精度较高的场合,差分定位能很好的解决定位精度不高的问题.本文在差分GPS的基础上,提出和构建了基于北斗/GPS的组合伪距差分系统,通过该系统产生的伪距改正数能显著的提高用户的定位精度.同时,由于RTCM2.X格式没有定义北斗系统的伪距差分电文格式,本文提出一种改进的RTCM差分电文使其适用于北斗系统用户,以便于北斗用户使用此数据传输协议进行差分定位.
In general, the positioning accuracy of single point navigation system is only about 15m, It can＇t satisfy some fields of precision positon, Differential positioning can be a good solution to the problem of low positioning accuracy. In this paper, On the basis of differential GPS, the BDS/GPS combined pseudorange differential system was designed, the user＇s positioning accuracy can be significantly improved by pseudorange correction generated by the scheme. At the same time,duing to the Beidou system of pseudo range differential message format isn＇t defined int the RTCM2. X format, this paper proposes an improved RTCM differential message format to make it applicable to the user of the Beidou system, so as to facilitate the Beidou user to use this data transmission protocol for differential positioning
出处
《微电子学与计算机》
CSCD
北大核心
2016年第10期36-40,共5页
Microelectronics & Computer
基金
广西科技公关开发项目(桂科攻1348014-9)
广西研究生创新项目(YJCXS201528)
