新沂市地理空间数据坐标转换方法对比研究  

Comparative Study on Coordinate Transformation Methods of Geospatial Data in Xinyi City

作　　者：陈浩[1,3] 付超 刘友志[3] 汪云甲 CHEN Hao;FU Chao;LIU You-zhi;WANG Yun-jia(School of Environment and Geo-Informatics,China University of Mining and Technology,Xuzhou Jiangsu 221116,China;Provincail Geomatics Centre of Jiangsu,Nanjing Jiangsu 210000,China;Xinyi Bureau of Natural Resources and Planning,Xuzhou Jiangsu 221400,China)

机构地区：[1]中国矿业大学环境与测绘学院,江苏徐州221116 [2]江苏省基础地理信息中心,江苏南京210000 [3]新沂市自然资源和规划局,江苏徐州221400

出　　处：《现代测绘》2024年第4期27-30,共4页Modern Surveying and Mapping

基　　金：城市形变的雷达遥感监测与建构筑物安全风险智能识别关键技术研究(2022YFE0102600)

摘　　要：为实现地理标准统一、基础数据支撑、开展各级业务,以新沂市全域为研究区,选取38个均匀分布控制点,每个控制点平均控制面积约40 km^(2),平均距离约4.0 km。使用CASS和ArcGIS软件,采用四参数法、七参数法和空间校正3种转换方法,对新沂市地理空间数据从1980西安坐标系转换为CGCS2000大地坐标系,转换结果误差精度为毫米级。对比分析3种方法的精度高低,结果表明:四参数转换方法可以满足研究区域范围内的工程测量精度要求,采用ArcGIS软件空间校正的方式可以满足SHP、MDB等矢量数据转换精度要求,大范围、大比例尺测图地理空间数据转换可优先采用七参数进行转换。For the purposes of unifying geographical standards,providing foundational datas support,and facilitating operations at various levels,Xinyi city was designated as the study area,within which 38uniformly distributed control points were selected.Each control point had an average control area of approximately 40km^(2) and an average distance of roughly 4.0km from its neighbors.Utilizing CASS and ArcGIS software,three conversion methods—four-parameter transformation,seven-parameter transformation,and spatial adjustment—were employed to transform the geospatial data of Xinyi city from the Xi'an 1980coordinate system to the China Geodetic Coordinate System 2000(CGCS2000).The conversion results exhibited millimeter-level accuracy.By comparing and analyzing the precision of these three methods,it was concluded that the four-parameter transformation method can also meet the engineering survey accuracy requirements within the study area.Additionally,adopting spatial adjustment using GIS software can satisfy the precision requirements for vector data conversion formats such as SHP and MDB.Furthermore,for geospatial data conversion in large-scale and large-proportion mapping,the seven-parameter transformation method is preferred.

关 键 词：CASS GIS 地理空间数据 坐标转换 

分 类 号：P226.3[天文地球—大地测量学与测量工程] P208[天文地球—测绘科学与技术]