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Abstract:
To reduce processing time, satellite conjunction prediction tools often employ methods to decrease the number of objects for consideration. Various economizing filters are used to identify orbiting pairs that cannot come close enough over a prescribed time period to be considered hazardous. Such pairings can then be eliminated from further computation to quicken the overall processing time. For each pair that remains, the respective orbits are propagated to determine if the minimum distance between objects is below a preset screening threshold. When conjunction probability is to be used as a metric, the minimum distance threshold must be determined from the minimum acceptable probability threshold. This work develops an analytical approximation that relates maximum probability to a miss distance threshold, thereby ensuring that the screening distance is adequate for probability-based conjunction assessment.
Citation:
"Determining A Probability-Based Distance Threshold For Conjunction Screening," Salvatore Alfano, Paper No. AAS 13-352, AAS/AIAA Space Flight Mechanics Meeting, Kauai, Hawaii, February 10 – 14, 2013.
JOURNAL OF SPACECRAFT AND ROCKETS, Vol. 50, No. 3, May–June 2013
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Comparing the effectiveness of positional accuracy improvements
