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Comparison on Ambiguity Resolution Methods Based on Beidou Triple-frequency Data of Short Baselines
Pages: 44-47
Year: Issue:  4
Journal: Hydrographic Surveying and Charting

Keyword:  BDSshort baselinetriple-frequency datacombination observationsambiguity resolution;
Abstract: 首先分析了矩阵变换、无几何CIR、几何CIR、组合观测量PAR、原始观测量PAR五种模糊度解算方法的原理;然后采用短基线北斗三频实测数据对每种方法进行测试和分析比较.结果表明:短基线条件下,无几何CIR算法和矩阵变换算法受电离层延迟和观测噪声的影响较大,模糊度固定成功率比较低,不适用于北斗实测数据;几何CIR算法和组合观测量PAR算法采用组合观测量会放大噪声水平,部分历元的模糊度固定出现错误;原始观测量PAR模糊度固定成功率最高,在本次算例中达到100%.
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