摘要
我国大多数测图成果采用的是北京54(BJS54)和西安80(XAS80)坐标系统,这两套坐标系统分别采用了不同的椭球参数,向CGCS2000转换时造成同一点在不同坐标系下的坐标值存在差异,进而也对地图分幅产生影响。并且,这些测图成果具有数据量大,区域广泛,投影参数不一致,比例尺不统一的特点,这又增加了转换工作的难度。本文参考了国内外坐标转换的常用转换模型及图幅拼接关键技术,参照相关实验结果及实验数据,对其特点进行对比总结分析,揭示了各种方法的适用情况,也希望能对地质成果CGS2000坐标转换研究提供帮助。
Most mapping products in our country use Beijing 54(BJS54)and Xian 80(XAS80)coordinate systems.Due to using different ellipsoidal parameters,the coordinate values of the same point will be different when they turn to CGCS2000 in different coordinate systems,which will effect the mapping division.What's more,because of the huge mapping products data,wide range of areas,the different projection parameters,and the unified measuring scale,all of these could make the work harder.This paper made a comparison analysis of the various methods when data turn to CGCS2000 in Beijing 54(BJS54)and Xian 80(XAS80)coordinate systems referring to usual coordinate transformation models commonly used current and key technology of splitting map as same as the related experimental results and the experimental data,and points out the applicable situations of the various methods.The author hopes this article could offer some help to the research of geological results turning to CGCS2000 coordinate transformation.
出处
《中国矿业》
北大核心
2014年第S2期319-323,共5页
China Mining Magazine
