基于地球椭球体等距正反方位投影参数计算  

Calculation of Azimuth and Coordinate Based on Azimuthal Equidistant Projection of Euipsoid

作　　者：华棠 丁佳波[2] 

机构地区：[1]海军海洋测绘研究所,天津300061 [2]海军出版社,天津300450

出　　处：《海洋测绘》2015年第5期16-19,共4页Hydrographic Surveying and Charting

摘　　要：等距方位投影所提供的主要投影参数是大地距离和大地方位角,可以直接服务于多种目的。等距反方位投影是以定点为极,动点至定点的大地距离和大地方位角保持真值。推导出了这两种投影的坐标计算公式,以及远程大地距离与大地方位角的计算与应用,并以实际算例进行了演示验证。Azimuthal equidistant projection provides main projection parameters of geodetic distance and geodetic azimuth for multiple purposes.Retoazimuthal equidisthat projection takes a fixed point as the polar point, and the geodetic distance and geodetic azimuth from the moving point to the fixed point keep the real values. In this paper,the coordinate calculating formulae of the above two kinds of projection are derived, as well as the calculation and application of the long- distance geodetic distance and geodetic azimuth, and the example demonstration and verification are conducted.

关 键 词：等距方位投影 大地距离 大地方位角 正距反方位投影 

分 类 号：P282.1[天文地球—地图制图学与地理信息工程]