日月影响的地球重力加速度精确计算方法  

Precise Calculation Method of Gravitational Acceleration Considering the Sun and the Moon

作　　者：黄劲松 傅瑜 HUANG Jin-song;FU Yu(China Academy of Launch Vehicle Technology,Beijing,100076,China)

机构地区：[1]中国运载火箭技术研究院,北京100076

出　　处：《宇航计测技术》2021年第4期50-54,76,共6页Journal of Astronautic Metrology and Measurement

摘　　要：介绍了地球表面上任意一点重力加速度的计算方法,得出了考虑地球、太阳和月球引力,海平面一定高度范围内的点位在一年和一昼夜中,不同的时间点重力加速度的计算公式。其中太阳引力和地球围绕太阳旋转相关的加速度分量在一昼夜时间内影响的方向会有变化,月球引力的影响较小,但影响的方向在昼夜间也是变化的,最终确定了地球表面上加速度的最大最小值。A calculation method of gravitational acceleration at any point on the earth was studied,and the research obtains the formula of gravitational acceleration considering the effects of the gravity of the earth,the sun and the moon,the height above sea level,the time of a year and a day.The acceleration component related to the sun's gravity and the earth's revolution acceleration takes the value of the variable sign in a day.The influence of the moon's gravity is minor and the sign changes throughout the day.The study gives the maximum and minimum values of gravitational acceleration on the earth's surface.

关 键 词：重力加速度 太阳引力 月球引力 近日点 远日点 

分 类 号：TP391.41[自动化与计算机技术—计算机应用技术]