GNSS网平差的闭合差彻底检验方法

A Thorough Test Method for Closure Error of GNSS Network Adjustment

基于最小二乘原理推导了间接平差模型转化为条件平差模型的矩阵运算方法,采用条件平差法的独立最小闭合环对GNSS网进行初步检查。提出引入完全枚举法来全面搜索GNSS网的全部闭合环的解决方案,实现对GNSS网进行彻底质量检查的目的。理论和实践均证实:相对于独立最小闭合环搜索算法,基于完全枚举法的闭合差检查法具有更严格、更彻底的粗差探测和定位功能。

Based on the least square principle, the matrix operation method for converting the indirect adjustment model into the conditional adjustment model is derived, and the GNSS network is preliminarily checked with the independent minimum closed loop of the conditional adjustment method. The solution of introducing complete enumeration method to comprehensively search all closed loops of GNSS network is proposed to realize thorough quality inspection of GNSS network. Both theory and practice have proved that compared with the independent minimum closed loop search algorithm, the closure error testing method based on the complete enumeration method has more strict and thorough gross error detection and positioning functions.