基于GCRS-ITRS变换的星下点求解研究  

Study on the Calculation of the Ground Track Points Based on GCRS-ITRS Transform

作　　者：任乐亮 鲜勇 郭禹岐 张大巧 常燕 REN Leliang;XIAN Yong;GUO Yuqi;ZHANG Daqiao;CHANG Yan(College of War Support,Rocket Force University of Engineering,Xi’an 710025,China)

机构地区：[1]火箭军工程大学作战保障学院

出　　处：《大地测量与地球动力学》2019年第11期1178-1181,共4页Journal of Geodesy and Geodynamics

摘　　要：借鉴数值分析的思想,在大地椭球模型的基础上采用IERS2010规范,结合成熟的基本天文标准(SOFA)程序库,在C++环境下设计一种基于GCRS-ITRS变换关系的星下点计算方法,以满足其实时性及精确度的要求。In this paper,we use the theory of numerical analysis and design a method of ground track point calculation based on GCRS-ITRS transformation.Based on the earth ellipsoid model and the IERS2010 standard,combined with the mature basic library of Standards of Fundamental Astronomy(SOFA),under the enviroment of C++,the method can satisfy the requirements for real-time and accuracy.

关 键 词：星下点 GCRS-ITRS变换 SOFA程序库 J2000.0平赤道坐标系 航天动力学软件 

分 类 号：P228[天文地球—大地测量学与测量工程]