精密单点定位中伪距观测值的选择
首发时间:2008-03-19
摘要:研究了提高伪距观测值精度的三种方法,即:相位平滑伪距、Hatch滤波和卡尔曼滤波,并探讨了它们的异同。在此基础上,利用自己编写的程序,分别用三种方法平滑后的伪距观测值进行单点定位计算,并与IGS跟踪站的已知坐标进行对比,得到一些结论。
关键词: 精密单点定位 相位平滑伪距 Hatch滤波 卡尔曼滤波
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Selection of Pseudo-range on GPS Precise Point Positioning
Abstract:Three methods of improving the precision of pseudorange and their contrasts are discussed firstly. Based on this, the software of GPS point positioning is compiled by the author of this paper, and the accuracy of GPS dual frequency phase-smoothed pseudorange and its point positioning is researched. Comparison with the result calculated and IGS station, some conclusions are given in the end.
Keywords: Precise Point Positioning Carrier-smoothed Hatch-type filter Kalman
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No.1947720646512059****
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