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Conference Paper
Analysis of Geostationary Satellite Conjunction Monitoring
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- Authors
- Yoola Hwang, Byoung-Sun Lee
- Issue Date
- 2017-08
- Citation
- AAS/AIAA Astrodynamics Specialist Conference 2017 (AAS), pp.1-11
- Publisher
- AAS
- Language
- English
- Type
- Conference Paper
- Abstract
- As geostationary satellites are increasing, the numbers of operating satellites placed at the same or close longitude are growing up. Two Line Elements (TLE) can be easily used to monitor and analyze the satellites located at same or close longitude for collision monitoring. However, TLE in accuracy is not enough to perform maneuver for collision avoidance. In this paper, we monitor the collision risk by calculating the distances between two satellites at each epoch using TLE, operational orbit, and conjunction data message (CDM). In addition, we study the reliability of TLE by comparing the North American Aerospace Defense Command (NORAD) TLE converted to osculating orbit and propagated with the actual operational osculating orbit. We also discuss about the conjunction monitoring differences between NORAD TLE propagated using our dynamic models and Joint Space Operations Center (JSpOC) CDM based on our experiences in the view of the satellite operator.
- KSP Keywords
- Collision risk, Data Message, Dynamic Models, Geostationary satellite, Joint space, Space Operations, collision avoidance