磁方位角计算方法的探讨及应用实例  

Discussion and Applicationonon Calculation Method of Magnetic Azimuth

作　　者：袁国志[1] 李春进[1] 王英林[1] 

机构地区：[1]宁波市测绘设计研究院,浙江宁波315042

出　　处：《城市勘测》2015年第4期111-113,共3页Urban Geotechnical Investigation & Surveying

摘　　要：当磁方位角精度要求不高(如要求到分),且不具备实测条件时,利用已有的测绘成果通过计算获取磁方位角就有实际的意义。本文针对具体的已知条件,提出了较为严谨的磁方位角计算方法,重点强调了需要引起注意的关键点。本文最后介绍了一个应用实例,供参考。When the magnetic azimuth accuracy is not required too high（ such as minutes）,and do not have the actual observation conditions,the existing surveying and mapping results is used to calculate to get magnetic azimuth that has practical significance. In this paper,according to the known conditions of concrete,puts forward precise the magnetic azimuth angle calculation method,with emphasis on the key points which need to be paid attention to. At last the paper introduces an application example to be reference.

关 键 词：磁偏角 子午线收敛角 大地椭球 中央子午线 磁方位角 

分 类 号：P212.2[天文地球—测绘科学与技术]