Sensitivity of Separation Indicators in Spacecraft Formation Collision Risk Analysis
Author(s)
Núñez Garzón, Ulises E.
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Abstract
The 99.73% minimum distance, denoted as 3, is the 0.27%-percentile in the distribution of
the norm of the instantaneous relative position between two agents. Previously, 3 has been
proposed as a probabilistic collision risk boundary for spacecraft formation flight under the
assumption of Clohessy-Wiltshire (CW) relative orbital dynamics. In this case, agents with
lesser separation than 3 have an instantaneous collision probability higher than 0.27%.
This work validates the foregoing interpretation of 3 by showing that small changes to the
target probability of 3 also result in small changes to 3 itself.
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Date
2021-08
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