quasi-spiral orbit

For evaluating the risk of satellites formation efficiently, quasi maximum instantaneous collision probability was defined. ( 3) Assuming a circular reference orbit, the safety evaluation criteria was figured out based on the collision probability.

为更有效的评估编队卫星碰撞危险程度，定义了拟最大瞬时碰撞率。（3）在圆参考轨道的假设下，基于碰撞概率制定了一套防碰撞安全评判准则。

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