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亚分米级GPS基线解算新算法

DOI: 10.3969/j.issn.1006-7043.2009.12.006

Keywords: GPS 三差基线解 亚分米级 误差分析 均值漂移 后验信息 GPS triple-difference solution sub-decimeter error analysis mean shift posteriori information

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Abstract:

当双差模糊度固定解的可靠性下降时,三差基线解成为当前情况下的最优选择,但通常情况下三差基线解精度只能达到分米级,难以满足高精度的要求.通过对三差测量值进行误差分析,给出三差观测量信噪比模型,结合实际观测数据分析,指出噪声对三差观测量影响很大.借鉴均值漂移理论出了精度为亚分米级的基线解算的新算法,给出了适用于单频三差基线解算的均值漂移模型,所述算法的精度可以达到10cm,即亚分米级.

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