基于MATLAB的坐标系统转换及精度评定  

Coordinate system conversion and accuracy evaluation based on MATLAB

作　　者：林楠 章荣露 曹顺 陶爱林 LIN Nan;ZHANG Ronglu;CAO Shun;TAO Ailin(China MCC17 Group Co.,Ltd.,Maanshan 243000,China)

机构地区：[1]中国十七冶集团有限公司,安徽马鞍山243000

出　　处：《经纬天地》2024年第4期1-5,33,共6页Survey World

摘　　要：施工建设中常由于部分工程时间跨度较长、数据系统更迭,导致同一工程前后坐标系不一致,存在坐标数据转换的难题。坐标数据转换的目的是将现有的坐标系数据通过参数模型转换成目标坐标系中的坐标数据,其核心任务是求解出转换参数。利用MATLAB软件,通过编程语言,借助MATLAB强大的数值计算能力提高测量数据处理的效率和能力,并通过现场测量对转换得到的数据精度进行评定。结果表明:采用本文方法转换获取的数据的平面点位精度满足国家要求,针对具体施工区域范围内的坐标转换精度较高,避免了坐标换带且坐标数据随转随用,在实际工程应用中切实可行。In construction projects,it is common to encounter long time spans and updates to data systems,which can result in inconsistencies in the coordinate systems before and after the same project,the problem of coordinate data conversion exists.The purpose of coordinate data conversion is to convert existing coordinate system data into coordinate data in the target coordinate system through parameter models,and the core task is to solve the transformation parameters.The MATLAB software and programming language is used in this article to improve the efficiency and capability of measurement data processing by leveraging MATLAB's powerful numerical computing capabilities.The converted data accuracy is evaluated through field measurements.The results show that the plane point accuracy of the data obtained by using the method proposed in this article meets the national requirements,avoids coordinate swapping and allows coordinate data to be converted and used as needed in view of relatively high coordinate conversion accuracy within the specific construction area.Thus this method is practical and feasible in practical engineering applications.

关 键 词：MATLAB 编程语言 坐标转换 精度评定 

分 类 号：P258[天文地球—测绘科学与技术]