Investigation of screening filter methods to enhance computation speed of conjunction assessment analysis

Name: Phasawee Saingyen

Organization : Prince of Songkla University. Faculty of Engineer

Email : phasawee@gistda.or.th

Name: Keerati Puttasuwan

Organization : Geo-Informatics and Space Technology Development Agency (GISTDA)

Email : keerati.p@gistda.or.th

Name: Sittiporn Channumsin

Organization : Geo-Informatics and Space Technology Development Agency (GISTDA)

Email : sittiporn@gistda.or.th

Name: Suwat Sreesawet

Organization : Geo-Informatics and Space Technology Development Agency (GISTDA)

Email : suwat@gistda.or.th

Name: Prakasit Udomthanatheera

Organization : Geo-Informatics and Space Technology Development Agency (GISTDA)

Email : prakasit@gistd.or.th

Name: Thanathip Limna

Organization : Prince of Songkla University. Faculty of Engineering

Email : thanathip.l@coe.psu.ac.th

keyword: Conjunction assessment (Orbital mechanics)

LCSH: Computer simulation

; Screening methods (Computational analysis)

LCSH: Aerospace engineering

; Computational efficiency

Abstract: The collision events in space result in generating a large number of fragmentation debris in orbit that threats to active satellites or spacecraft in near future. Currently, the space traffic management system analyzes the conjunction assessment to evaluate the collision risk of satellite by defining the time closest approach (TCA) and miss distance between two space objects to decide the collision avoidance maneuver plan of satellite when there is a high chance of collision. However, the computation time of conjunction analysis is the key to decide the collision maneuver plan to mitigate the collision risks because the conjunction analysis assessment algorithm without a filter spend huge runtime to detect the TCA of all space objects. In order to enhance the computation speed, the conjunction filter algorithms are very useful for finding the conjunction events of some objects before computing the precise TCA and miss distance. The timestep analysis is one of the keys to increase the computation speed. However, the filter possible miss some conjunction events. This paper presents the investigations of two conjunction filter methods: “Smart Sieve” and “CSieve” to define the conjunction events of three Thai satellites: THEOS, NAPA-1 and NAPA-2 by varying the timestep of both filters. The analyzed results (computation cost, number of conjunction events) are compared with the conjunction assessment analysis without filter.

King Mongkut's University of Technology North Bangkok. Central Library

Address: BANGKOK

Email: library@kmutnb.ac.th

Created: 2022

Modified: 2025-08-21

Issued: 2025-08-21

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BibliograpyCitation : In Electrical Engineering Academic Association (Thailand) and Rajamangala University of Technology Isan Khon Kaen Campus. Faculty of Engineering. The 2022 International Electrical Engineering Congress (iEECON 2022) (P01642). Khon Kaen : Rajamangala University of Technology Isan, 2022

eng

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