七参数坐标转换模型的比较分析  

The Comparative and Analysis of Seven-parameter Coordinate Conversion Model

作　　者：张飞[1] 王建强[1,2,3] 罗寒[1] 

机构地区：[1]东华理工大学测绘工程学院,江西南昌330013 [2]流域生态与地理环境监测国家测绘地理信息局重点实验室,江西南昌330013 [3]江西省数字国土重点实验室,江西南昌330013

出　　处：《测绘与空间地理信息》2016年第5期48-51,共4页Geomatics & Spatial Information Technology

基　　金：国家自然科学基金项目(41304020;41204003;41404026;41464001);东华理工大学博士科研启动基金项目(DHBK201114)资助

摘　　要：主要介绍了Bursa模型、Molodensky模型,以及武测七参数坐标转换模型的原理与方法,采用最小二乘原理求解七参数数值并通过Cshape编程实现三种模型的转换过程,比较三种模型的坐标转换结果并解算模型的相关系数矩阵,分析了三个模型七参数之间的相关性。结果显示,三种模型转换后的坐标及残差完全一样,小范围内Molodensky模型参数之间的相关性明显弱于Bursa模型和武测模型。The principle and method of Bursa model,Molodensky model and Wuce model coordinate transformation model parameters are mainly introduced,using the least square principle to solve parameter values and achieving the conversion process of three models programmed by Cshape,comparing the conversion result of the three models and solving the correlation coefficient matrix of models,analyzing the correlation between the Seven-Parameter of three models. The results show that the coordinates and residuals of three models exactly the same after the conversion and the correlation between Molodensky model parameters weaker than Bursa model and Wuce model within a small range.

关 键 词：BURSA模型 Molodensky模型 武测模型 相关性 Cshape 

分 类 号：P226.3[天文地球—大地测量学与测量工程]