基于非组合精密单点定位的GPS三频数据仿真  

SIMULATION OF TRIPLE-FREQUENCY GPS DATA BASED ON UNCOMBINED PRECISE POINT POSITIONING

作　　者：王永乾[1,2] 袁运斌[1] 董丽娜[1,2] 肖长伟[1,2] 

机构地区：[1]中国科学院测量与地球物理研究所大地测量与地球动力学国家重点实验室,武汉430077 [2]中国科学院研究生院,北京100049

出　　处：《大地测量与地球动力学》2012年第3期102-105,共4页Journal of Geodesy and Geodynamics

基　　金：国家自然科研基金(41021003;41074013;40890160;41104012);湖北省自然科学基金(2011CDB399)

摘　　要：提出利用非组合PPP算法实施三频GPS数据仿真,通过GPS双频观测数据解算测站环境误差(如对流层、电离层延迟等),然后利用解算误差项进行L5频率数据仿真,经与实测数据对比,载波相位观测值差值大都在0.2周以内,且波动幅度较小,稳定可靠,该算法仿真的三频GPS数据能较好地体现测量实际环境,有利于三频数据相关算法研究。The simulation technique of triple-frequency GPS data by using uncombined precise point positio- ning（PPP） algorithm is proposed. Through solving GPS dual-frequency observation data, the errors of observational environment including troposphere and ionosphere delay are calculated, and then the data of i5 frequency are simu- lated.according to the errors calculated. By the comparison with the measured I5 observation data,it is obtained that the difference between the simulated carrier and the observed carrier is less than 0.2 cycles, and the fluctua- tion is small enough that verifies the algorithm. Consequently, the simulation technique using PPP could reflect the actual measuring environment and play a significant role in the relevant triple-frequency algorithm.

关 键 词：精密单点定位 三频 仿真 电离层延迟 对流层 

分 类 号：P228.4[天文地球—大地测量学与测量工程]