摘要
研究单频GPS精密单点定位参数收敛，提出抗差估计方法可改善短时段观测数据处理的参数收敛。通过解算两目的实测数据，分析不同时段的定位精度发现，抗差估计方法相较于最小二乘更能加快单频精密单点定位的参数收敛，可以抵抗一些模糊度参数远远没有收敛或质量较差的观测数据对参数收敛的影响，并且能明显提高短时段数据解算的精度。
By studying the parameter convergence of single frequency GPS precise single point positioning, the robust esti- mation method is proposed to improve the parameter convergence of short time observation data processing. After calculating the measured data of two days and analyzing the positioning accuracy in different time periods, it is found that the robust estimation method can accelerate the parameter convergence of single-frequency precise single point positioning compared with the least squares, resist impacts of some ambiguity parameters without convergence or observation data with poor quality on parameter con- vergence, and significantly improve the accuracy of short-term data calculation.
出处
《测绘科学与工程》
2017年第1期26-29,共4页
Geomatics Science and Engineering
基金
基金项目：国家自然科学基金资助项目（U1431115）.
关键词
单频精密单点定位
参数收敛
抗差估计
最小二乘
single frequency precise point positioning
parameter convergence
robust estimation
least squares
