实际上差不多就是这样发生的，只不过月球轨道交点的空间方位有渐移运动。
In fact, this is what almost happens, except that the nodes of the lunar orbit are gradually shifting their orientation in space.
并给出了在轨道交点周期、回归圈数、回归周期、重复周期和其他因素等约束条件下的轨道设计要点。
The key points of the design under the restrained conditions, such as orbit node period, regressive cycles, regressive period, repeat period and others, were also presented.
研究了通过遗传算法模型优化设计侦察卫星轨道高度、轨道倾角、右升交点角及平近点角等轨道参数的方法。
Through the GA model, the orbital elements of each satellite such as altitude, inclination, RAAN and mean anomaly are optimized.
通过引入假想交点的概念，推导出了交点周期、基本交点距与轨道高度的关系。
Then, the relationship among nodal period, fundamental interval and orbital altitude was educed by deriving the definitions of fictitious node.
文摘：以升交点经度的范围来描述所有能覆盖到目标的轨道。
Abstract: All orbits by which targets can be covered are described according to the longitude of ascending node.
文摘：以升交点经度的范围来描述所有能覆盖到目标的轨道。
Abstract: All orbits by which targets can be covered are described according to the longitude of ascending node.
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