广域差分的全矢量法

Full vector algorithm on wide area differential

针对广域差分改正矢量的组成元素集之一的电离层模型参数集,分别用Klobuchar模型和Georgiadou模型进行了分析和比较,详细推演了广域差分改正矢量估计的全矢量法。在统一的数学模型中给出了统一解算卫星星历误差、卫星钟差和广域差分基准站时钟误差的计算公式;对理想状态下的模型参数、基准站和跟踪的卫星的数量关系进行了探讨。

Considering the fact that the ionosphere model parameter set is the key element set in wide area differential correction vector, analysis and comparisons between the Klobuchar Ionosphere Model and the Geogiadou Ionosphere Model are performed; detailed Full vector algorithms are developed for wide area differential correction vector estimation. Formulae for the calculation of satellite ephemeris error, satellite clock error, as well as clock errors of the wide area differential GPS Reference station are derived in a uniform model; the relationship among the number of model parameters, reference station and satellite being tracked is discussed under an ideal condition, which is of significance in the design of a data processing center for a wide area differential GPS system.