摘要
介绍了各种常用坐标转换模型及适用性,分析了重合点密度对不同坐标转换模型转换精度的影响和二维四参数转换模型投影变形影响,研究了不同坐标模型外推的范围与外推误差的大小,得出了相应的结论,为不同区域地理信息坐标转换模型的选取提供了有益的参考依据。
We introduce various coordinate transformation models and their practicability.Through a large of tentative calculations,we analze the coincident point density influence in different coordinate transformation model and four-parameter model of two-dimensional projection deformation,we study size of different coordinate transformation model of extrapoled extension and extrapoled error,and obtain corresponding conclusion that provides useful of reference for different regions of geographic information coordinate transformation.
出处
《测绘信息与工程》
2010年第5期37-39,共3页
Journal of Geomatics
关键词
坐标系
坐标转换
重合点
coordinate system
coordinate transformation
coincident point
