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http://dx.doi.org/10.5139/JKSAS.2019.47.4.283

Validation on Solar-array Drive Assembly of GEO-KOMPSAT-2A Through In-orbit Operation  

Park, Young-Woong (Korea Aerospace Research Institute)
Park, Keunjoo (Korea Aerospace Research Institute)
Park, Bong-Kyu (Korea Aerospace Research Institute)
Publication Information
Journal of the Korean Society for Aeronautical & Space Sciences / v.47, no.4, 2019 , pp. 283-288 More about this Journal
Abstract
In this paper, there is summarized the validation of ground test results through the telemetry acquired during on-orbit initial activation on solar-array drive assembly(SDA) of GK2A launched at Dec-5, 2018. Especially, the decision logic of SDA initial position and the compensation logic are validated and confirmed. The SDA initial position is needed when GK2A enter to geostationary orbit from transfer orbit and the compensation logic is for the accumulated position error due to the open-loop control. Up to now, it is normal operating. Also the periodic offset between the geostationary orbit and Sun position is found that it is not checked on design phase, and then the proper threshold value is applied.
Keywords
GEO-KOMPSAT; SDA; IOT; Open-loop Control; Ephemeris; Pointing Error; WOM;
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  • Reference
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2 Park, Y. W., and Park, K. J., "The Initial Target Position of Solar Array and the Verification on Geostationary Earth Orbit Korea Multi Purpose Satellite," Proceedings of the Korean Society for Aeronautical and Space Sciences Spring Conference, April 2018, pp.333-334.