三维空间直角坐标转换的Bursa模型抗差解法  

Bursa model robust solution for cartesian coordinate transformation in three-dimensional space

作　　者：陈再辉 CHEN Zaihui(Lishui Construction Technology Management Center,Lishui,Zhejiang 323000,China)

机构地区：[1]丽水市建设技术管理中心,浙江丽水323000

出　　处：《导航定位学报》2021年第2期118-121,共4页Journal of Navigation and Positioning

摘　　要：对于空间直角坐标转换精度的研究主要是转换模型的选取和抗差估计理论的应用,通过各种模型和算法提高转换参数的解算精度。针对空间直角坐标转换中的布尔萨(Bursa)模型的严密公式,给出了模型的抗差求解方法和具体的解算步骤,解算过程更为严谨。使用常用的几种权函数进行模型参数的抗差解算,对其求解参数的收敛速度进行比较分析。通过具体实例验证了方法的有效性和可靠性。The research on the accuracy of space rectangular coordinate transformation is mainly the selection of transformation model and the application of robust estimation theory.Through various models and algorithms,the accuracy of transformation parameters is improved.Aiming at the rigorous formula of Bursa model in space rectangular coordinate transformation,this paper gives the model’s robust solution method and specific solution steps,and the solution process is more rigorous.Several commonly used weight functions are used for robust calculation of model parameters,and the convergence speed of their solution parameters is compared and analyzed.The effectiveness and reliability of the method are verified by specific examples.

关 键 词：空间直角坐标 布尔萨模型 抗差估计 粗差 

分 类 号：P228[天文地球—大地测量学与测量工程]