多元回归格网改正量模型的大区域坐标转换方法  

Large area coordinate transformation method based on multivariate regression grid correction model

作　　者：杨国创 尹彤 王金月 高严 孙泽宇 YANG Guochang;YIN Tong;WANG Jinyue;GAO Yan;SUN Zeyu(Geology Surveying and Mapping Institute of Guangdong,Guangzhou 510800,China;Institute of Surveying and Mapping Standardization,Ministry of Natural Resources,Xi’an 710054,China;Supervision Center of Map,Ministry of Natural Resources,Beijing 100036,China)

机构地区：[1]广东省地质测绘院,广州510800 [2]自然资源部测绘标准化研究所,西安710054 [3]自然资源部地图技术审查中心,北京100036

出　　处：《导航定位学报》2023年第3期185-190,共6页Journal of Navigation and Positioning

摘　　要：为了解决我国存量地理信息成果向2000中国大地坐标系(CGCS2000)的整体无缝转换问题,提出一种多元回归格网改正量模型的大区域坐标转换方法:采用格网改正量法建立统一的转换模型,格网节点改正量采用多元回归算法实现,待转点改正量采用双线性内插法获取,研究整套转换模型及其使用方法。实验结果表明,多元回归模型计算精度较高,且可保证转换结果的唯一性;格网改正量法是大区域转换的统一模型,能够实现大区域的无缝转换;格网转换方法效率高、可实施性强、准确度高。In order to solve the overall seamless transformation of China's previous geographic information data results to the China geodetic coordinate system 2000(CGCS2000),the paper proposed a large area coordinate transformation method based on multivariate regression grid correction model:the unified transformation model was established by using the grid correction model,by which the grid node correction was realized by multiple regression algorithm,and the correction of the points to be transformed was obtained by bilinear interpolation,to perform the calculation and application of the whole set of the transformation model.Experimental result showed that the multiple regression model could have high accuracy and ensure the uniqueness of the conversion result;and the grid correction method would be a unified conversion model of large area to help realize seamless conversion of large areas;moreover,the grid conversion method would have high efficiency,strong implementability and high accuracy.

关 键 词：2000中国大地坐标系(CGCS2000) 多元回归 格网改正量 双线性内插 坐标转换 

分 类 号：P228[天文地球—大地测量学与测量工程]