|Performance Enhancement of a Satellite’s Onboard Antenna Tracking Profile using the Ground Station Searching Method
Young-Joo Song, Jung-Ro Lee, Jihoon Kang, Moon-Jin Jeon and Sang-il Ahn
International Journal of Aeronautical and Space Sicences, vol. 17, no. 3, pp.391-400, 2016
Abstract : In satellite operations, stable maneuvering of a satellite’s onboard antenna to prevent undesirable vibrations to the satellite
body is required for high-quality high-resolution images. For this reason, the onboard antenna’s angular rate is typically
minimized while still satisfying the system requirement that limits the speed of the onboard antenna. In this study, a simple
yet effective method, called the ground station searching method, is proposed to reduce the angular rate of a satellite’s
onboard antenna. The performance of the proposed method is tested using real flight data from the KOMPSAT-3 satellite.
Approximately 83% of arbitrarily selected real flight scenarios from 66 test cases show reductions in the onboard antenna’s
azimuth angular rates. Additionally, reliable solutions were consistently obtained within a reasonably acceptable computation
time while generating an onboard antenna tracking profile. The obtained results indicate that the proposed method can be
used in real satellite operations and can reduce the operational loads on a ground operator. Although the current work only
considers the KOMPSAT-3 satellite as a test case, the proposed method can be easily modified and applied to other satellites
that have similar operational characteristics.
Keyword : Onboard satellite antenna, Gimbal system, Tracking Profile Generation