摘要
天线相位中心误差是高精度地壳形变监测中制约定位精度的重要误差源,天线相位中心改正已成为提高观测精度的有效手段。文中对基于精密测量机器人的GPS天线相位中心变化精确检测方法进行了试验研究,并对试验数据进行初步分析,得到的天线平面校正精度约为2mm,高程方向校正精度约为3mm。研究结果表明,天线相位中心的精确校正除了可以提高GPS测量定位精度之外,还可为中国自主北斗导航系统提供精确的天线相位中心校正参数,推动北斗导航系统在高精度地壳形变监测领域的应用。
In the high-precision GPS positioning applications, the antenna phase center calibration significantly impacts the survey accuracy. This article introduces the experiment study of precise calibration of GPS antenna phase center variations based on automatic survey robot GPS which is funded by Crust Movement Observation Network of China project. In this paper, the main derivations of the principle and implementation procedure are described step by step. Comparing with the known calibration parameters,the horizontal accuracy is estimated about 2mm and the vertical accuracy is estimated about 3mm. This study is of practical significance to improve the accuracy of GPS positioning and to popularize the application of calibration of antenna phase center variation based on survey robot.
出处
《地震地质》
EI
CSCD
北大核心
2013年第2期380-387,共8页
Seismology and Geology
基金
中国地震局监测预报项目"北斗导航与GPS联合应用分析"
国家自然科学基金(41104016)共同资助
