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南通航运职业技术学院学报[ISSN:1006-6977/CN:61-1281/TN]

Title:: Study on Robust Algorithm for Conversion Between Different Geodetic Coordinate Systems

Author(s):: CAO Hou-long; Construction Center, National Nuclear Engineering Co., Ltd.

Keywords:: gross error; Baarda data detection method; robust estimation; quasi-accurate detection

method;

摘要:: 不同大地坐标系间的坐标转换是采用两套坐标系下坐标的公共点，结合相应的转换模型，求取转换九参数
来实现转换的过程。转换时若公共点坐标存在粗差，九参数的求解精度便会受到影响，致使转换失败。文
章将传统的Baarda粗差数据探测法、抗差最小二乘法以及拟准检定法用于解决其转换时公共点坐标粗差导
致的精度偏离问题。结合转换算例得出精度对比结论，为工程实际中的大地坐标转换算法的选择提供一定
的参考依据。

Abstract:: The coordinate transformation between different geodetic coordinate systems applies the

common point of coordinates in two sets of coordinate systems. Integrated with corresponding

transformation model, the process of transforming nine parameters is produced. If there is a

gross error in the common point coordinate during conversion, the accuracy of the nine

parameters will be affected, resulting to failure of conversion. The traditional Baarda gross

error data detection method, robust least squares method and quasi-accurate detection method

are used to solve the problem of precision deviation caused by gross error of common point

coordinate during conversion. In combination with conversion algorithm examples, it provides

certain reference for the selection of geodetic coordinate conversion algorithm in

engineering practice.

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更新日期/Last Update: 2019-12-03