基于GAMP的实时PPP软件实现及性能分析  

Implementation and performance analysis of real time PPP software based on GAMP

作　　者：刘亚 何文涛[1,3] 张洁 Liu Ya;He Wentao;Zhang Jie(Institute of Microelectronics of Chinese Academy of Science,Beijing 100029,China;University of Chinese Academy of Sciences,Beijing 100049,China;Hangzhou Zhongke Microelectronics Co.,Ltd.,Hangzhou 310053,China)

机构地区：[1]中国科学院微电子研究所,北京100029 [2]中国科学院大学,北京100049 [3]杭州中科微电子有限公司,浙江杭州310053

出　　处：《电子技术应用》2022年第2期55-59,64,共6页Application of Electronic Technique

摘　　要：针对GAMP精密单点定位解算软件现阶段无法进行实时定位解算的问题,分析和研究了软件中事后精密单点定位算法的原理和流程,对比实时及事后精密单点定位数据来源和处理方式的不同,结合现有的实时数据处理软件的处理方式,在GAMP的基础上增加了实时数据流接收及预处理模块,同时将卫星精密轨道及钟差的来源从事后精密星历文件转向广播星历结合实时改正数的方式。分别通过网络接收四测站卫星观测数据以及UBLOX-F9T模块接收数据进行实时精密单点定位可以发现,静态实时精密单点定位精度可达厘米级,动态可达分米级,满足了实时定位解算需求。Aiming at the problem that GAMP software lacks the function of real-time precise point positioning at this stage,this paper analyzes and studies the principle and process of the post precise point positioning algorithm in the software,compares the different data sources and processing methods of the real-time and post precise point positioning,and combines with the processing method of existing real-time data processing software.On the basis of GAMP,a real-time data stream receiving and preprocessing module is added.At the same time,the source of satellite precise orbit and clock bias changes from post precise ephemeris file to broadcast ephemeris combined with real-time corrections.Through the real-time precise point positioning experiment of four stations and UBLOX-F9T module,it can be found that the static real-time precision point positioning accuracy can reach centimeter level and the dynamic accuracy can reach decimeter level,which meets the needs of real-time precise point positioning.

关 键 词：实时PPP 实时数据流 NTRIP协议 UBLOX协议 组合SSR 

分 类 号：TN961[电子电信—信号与信息处理] TP311[电子电信—信息与通信工程]