对地观测卫星太阳同步轨道的快速设计方法

对地观测卫星轨道具有全球目标覆盖和太阳同步两种特性，通过设计轨道周期和轨道倾角可以获得这些特性，为此，给出了一种能十分简便，快速地完成轨道初步设计的方法，为轨道精密复算和开展卫星姿态控制等分系统设计提供技术支持，此外还揭示了星载探测仪器在地面上产生的扫描带的分布排列规律，分析了轨道衰减和复升问题，最后给出一个算例。

A Rapid Method to Design Sun-Synchronous Orbit of Earth Observation Satellite

Global coverage and sun synchronization are the essential properties of the earth observation satellites, which are assumed by designing the orbit period and inclination. An original method, described in the paper, is able to accomplish the preliminary orbit design very simply and rapidly that provides the technical support to further design of the orbit itself and other subsystems like the satellite attitude control system. It discovers the nature underlined in the ordering and evolution of the observation scan strips on the earth surface, and analyzes orbit decay and recovery maneuver. A numerical example to the problem is given.