摘要
基于经典的弹性地球自转动力学理论,通过引入章动坐标系相对惯性空间的运动,推导出一个同时包含极移和章动的弹性地球自转联合动力学方程。在推导过程中首次考虑了高阶岁差章动力矩和其它摄动因素(摄动周期满足0.5d≤T≤1.5d)对地球自转的影响,从而使得方程更加完备和完美,与现行的地球自转动力学方程相比较表明,该方法综合性强而且易于理解。
Based on classical dynamical equation for rotation of the elastic earth, an associated dynamical equation containing both nutation and wobble of the earth rotation have been deduced through introducing motion of nutation frame system with respect to inertial spatial frame. In process of deducing new equation, we have first considered influences of high degree precession-nutation moment and other disturbing mechanism (their periods satisfy the expression: 0.5d≤T≤1.5d) on the earth rotation. Consequently, it makes new equation to become more complete and perfect. It indicated that the new dynamical equation is more comprehensive and easily understood than the existing dynamical equation on the earth rotation.
出处
《山东科技大学学报（自然科学版）》
CAS
2004年第4期1-4,11,共5页
Journal of Shandong University of Science and Technology(Natural Science)
基金
国家自然科学基金资助项目 (40 3 740 3 0 )
(40 2 3 40 3 9)
地球空间环境与大地测量教育部重点实验室资助项目 (0 2 0 91 5)
中国科学院知识创新工程重要方向资助项目 (KZCX3 SW 1 3 2 )
关键词
章动坐标系
极移和章动
联合动力学方程
nutation coordinate system
wobble and nutation
associated dynamical equation
