Full characterization of satellite conjunction walk-ins
Id: 273
Type: Conference paper
Published: 01/08/2018
Event: 28th AAS/AIAA Space Flight Mechanics Mtg 2018
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Abstract:
We examine satellite conjunction walk-ins consisting of a time-ordered sequence of five or more close approaches within 10 km between a pair of orbiting objects, with each conjunction spaced at approximately full-orbital period apart from the former and subsequent ones. For geosynchronous orbits the sequence can be within 50 km. A volumetric approach is employed to determine the possibility of a walk-in while also determining the true anomalies of chief and deputy that yield the closest possible approach. Using an orbit element difference vector we identify the conditions which lead to such conjunction walk-in sequences. We employ a linearized approach to examine the various close approach patterns that result from these and other approach geometry conditions. We depict all three dimensions to simultaneously examine the evolution of miss-distance over time for a specific walk-in. We realize that linearized relative motion techniques are not adequate for all cases; our purpose is to use linearization as a window to gain understanding of the underlying mechanics of conjunction walk-ins.
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Citation:
Alfano, S. and Oltrogge, D.L., “Full Characterization of Satellite Conjunction Walk-ins,” AAS Space Flight Mechanics Conference, 8 January 2018, Orlando, FL, accessible at https://comspoc.com/Resources/Content/Private/C-20220424T112313/Paper/20180112_Sat_Conj_Walk-ins_Alfano_Oltrogge_SUBMITTED.pdf.
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