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.
出处
《大地测量与地球动力学》
CSCD
北大核心
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)
关键词
精密单点定位
三频
仿真
电离层延迟
对流层
precise point positioning （PPP）
triple-frequency
simulation
ionospheric delay
troposphere
