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基于MATLAB的二维坐标系变换

发表时间:2008-03-31  浏览量:1723  下载量:843
全部作者: 陈兆林,张书毕,冯华俊
作者单位: 国家海洋环境监测中心;中国矿业大学环境与测绘学院;有色金属矿产地质调查中心北京测绘院
摘 要: 对于大范围测区的坐标转换,如果利用同一套坐标参数进行转换会使坐标精度损失很大。本文提出一种利用Delaunay函数将测区分为若干个小三角形区域并分别计算各自三角形区域的转换参数的坐标转换方法。利用MATLAB的Delaunay函数功能将整个测区内的已知控制点连成三角网并计算各个三角形区域内的坐标转换参数,利用不同三角形区域内的转换参数进行二维坐标系的变换。通过对实际算例的分析表明,该坐标转换方法精度较高,能够满足一定区域内大比例尺地形图的精度要求。
关 键 词: 大地测量学与测量工程;坐标变换;Delaunay函数;转换参数;MATLAB
Title: Planar coordinate transformation based on MATLAB
Author: CHEN Zhaolin, ZHANG Shubi, FENG Huajun
Organization: National Marine Environmental Monitoring Cente;School of Environment and Spatial Informatics, China University of Mining and Technology;China Non-ferrous Metals Resource Geological Survey
Abstract: The coordinate systems are often transformed under a set of transformation parameters, but accuracy of coordinates are low in large area. This paper introduced an coordinate transformation method, which divide the whole area into some triangulation parts by using Delaunay function and computed the transformation parameters of each parts. The coordinate transformation parameters of different triangles were computed by using the Delaunay function of MATLAB to form triangulation network with the control points of the whole area. The calculative results show that the coordinate transformative method which is put forward in this paper is high accuracy and can meet the requirement of large scale topographic map.
Key words: geodesy and survey engineering; coordinate transformation; Delaunay function; transformation parameters; MATLAB
发表期数: 2008年7月第6期
引用格式: 陈兆林,张书毕,冯华俊. 基于MATLAB的二维坐标系变换[J]. 中国科技论文在线精品论文,2008,1(6):671-675.
 
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