基于北斗三频数据的周跳探测与修复

针对三频伪距相位法和无几何相位法通常受电离层影响较大的问题,对其进行改进。选取弱电离层影响、低噪声的组合观测值,分析两种方法共同的不敏感周跳组合;采用LAMBDA方法搜索周跳固定解;采用北斗实测数据进行验证分析。结果表明:除两个不敏感周跳组合外,改进后的算法能探测并修复出1周以上的所有周跳。

Circle-slip detection and repair based on Beidou triple-frequency data

Considering that code‐phase method and geometry‐free phase method are usually influenced by the ionospheric delay ,this paper has improved these two methods .Combined observations with low ionosphere effect and small noise are selected ,and common insensitive circle‐slips of these two methods are analyzed .LAMBDA technique is applied to searching the fixed resolutions of circle slips .At last , experiments are carried out with Beidou data .The result shows that circle slips which are greater than 1 circle can be detected and repaired except for two insensitive circle‐slips .