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.

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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.

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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.

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