A Novel Analytical Method to Determine Future Close Approaches between Satellites

Austin Ogle, Nazarbayev University; Christos Spitas, Nazarbayev University

Keywords: Orbital Mechanics, Conjunction Assesment, SSA

Abstract:

Satellite operators are overwhelmed by proximity warnings published in conjunction analysis reports. Historically proven, the vast majority are false warnings and can be safely ignored. This is an artifact of using TLEs or other data sources which come with poor covariance. In turn, large tresholds are used to overcome this uncertainty. Only by reducing the threshold for warnings as well as using more accurate data sources can we provide satellite operators with a reasonable and actionable list of vulnerabilities. This paper builds upon the fundamental concepts laid out in [1] and defines a new mutual frame from which equations for the relative dynamics of satellites can be described. These equations build into a new time prefilter, leading to computational savings, as well as the ability to analytically predict when close approaches will take place under two body motion.

Date of Conference: September 27-20, 2022

Track: Conjunction/RPO

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