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赤道同步卫星轨道倾角的摄动,主要是由于太阳、月球的引力所引起的。它们的作用使得卫星轨道平面围绕三个轴进动。这三个轴是黄极、北极和白极。绕此三轴进动的合成,就是赤道同步卫星轨道倾角变化的近似规律。这一结果,可从解Lagrangè行星运动方程得到。本文采用一个简单的方法可得到相近的结论。许多结果和现有资料非常接近。这个方法的基本思路是:设卫星在轨道上运动如同一个“陀螺”,在受到外力矩作用下产生进动。Thomson用此法研究过地球扁率引起的卫星轨道面的进动。我们用它来研究同步卫星轨道倾角的变化,也是有效的,尤其给出一个清晰的运动模型。
The perturbation of equatorial orbiting satellite orbit inclination is mainly caused by the gravitation of the sun and moon. Their role allows the orbital plane of the satellite to move around three axes. The three axes are yellow, north and white. The synthesis around this triaxial precession is the approximation of the change of the orbital satellite orbital inclination. This result can be obtained by solving the Lagrangè planetary equation of motion. This article uses a simple method to get similar conclusions. Many of the results are very close to what is available. The basic idea of this method is: Let the satellite move on the orbit as a “gyro”, precession by the external moment. Thomson used this method to study the precession of satellite orbital planes caused by the Earth’s flattening. It is also effective to use it to study the changes in orbital inclination of geostationary satellites, especially given a clear model of motion.