贝赛尔大地主题解算分析  

Analysis on the solution of Bessel geodetic problem

作　　者：王建强[1] 胡明庆[2] 

机构地区：[1]武汉大学测绘学院,武汉430079 [2]武汉测绘信息工程院,武汉430010

出　　处：《测绘科学》2012年第1期30-31,共2页Science of Surveying and Mapping

摘　　要：贝赛尔大地主题解算是少数适合长距离大地主题计算的方法之一。文章通过对贝赛尔大地主题解算进行计算分析,发现贝赛尔大地主题反算中的大地线长计算精度受起点方位角的影响很大,误差可达8m。为了消去这一巨大误差,本文提出在大地主题反算时互换大地线起点和终点的方法,计算结果表明该方法可以有效消除方位角对大地线长误差的影响。There are few methods which are suitable for the solution of long geodesics and Bessel geodetic solution is one of them.In the paper,the calculating and analysis of Bessel geodetic solution showed that the precision of geodetic line was influenced by geodetic azimuth and the error could be up to 8m.The method of exchange between the starting point and end point around the geodesic was proposed to eliminate this huge error.The result of simulations showed that the error could be eliminated effectively by the method.

关 键 词：大地主题问题 贝赛尔公式 大地线 大地方位角 

分 类 号：P226[天文地球—大地测量学与测量工程]