摘要
为了研究获取日月实时位置的算法,画出它们一天中的运动轨迹,基于GAMIT软件,给出了太阳与月球在惯性系中三维位置获取的原理与方法,介绍了惯性系与地固直角坐标系之间的转换方法,并在当地切平面坐标系中,导出获取太阳与月球视位置的公式。结合2009年7月22日在我国长江流域日全食的实例,分析了太阳与月球全天的运动轨迹,选取当天9时39分44秒上海站的数据进行验证,画出了此时刻地球上的日月影图,证明该方法可行。
Study on the algorithm for getting real-time position of the sun and the moon and drawing their orbits are the main purposes of this paper.On the basis of famous GPS data processing software GAMIT,the theory and method for getting 3D coordinates in the inertial coordinate system is introduced,and the way to transform inertial coordinate system to body-fix coordinate system is discussed,and the formula for solving solar and lunar apparent place is given.Taking into account of the solar eclipse chronometer phenomena happened on 22/07/2009 in China,data at nine-o＇clock,thirty-nine minutes and eighteen seconds in Shanghai is used to analyze the track of the sun and the moon,and the methods are proved correct.
出处
《大地测量与地球动力学》
CSCD
北大核心
2010年第6期140-143,149,共5页
Journal of Geodesy and Geodynamics
关键词
GAMIT
数据处理
日食
视位置
坐标系
GAMIT
data processing
solar eclipse
apparent place
coordinate system
