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논문 기본 정보

자료유형
학술저널
저자정보
Kwang Hee Ko (Gwangju Institute of Science and Technology) Hyo-Sung Ahn (Gwangju Institute of Science and Technology) Semyung Wang (Gwangju Institute of Science and Technology) Sujin Choi (Korea Aerospace Research Institute) Okchul Jung (Korea Aerospace Research Institute) Daewon Chung (Korea Aerospace Research Institute) Hyungjun Park (Chosun University)
저널정보
한국항공우주학회 International Journal of Aeronautical and Space Sciences International Journal of Aeronautical and Space Sciences Volume.17 Number.4
발행연도
2016.12
수록면
622 - 630 (9page)

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초록· 키워드

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In the operation of a low earth orbit satellite, a series of antenna commands are transmitted from a ground station to the satellite within a visibility window (i.e., the time period for which an antenna of the satellite is visible from the station) and executed to control the antenna. The window is a limited resource where all data transmission is carried out. Therefore, minimizing the transmission time for the antenna commands by reducing the data size is necessary in order to provide more time for the transmission of other data. In this paper, we propose a geometric compression method based on B-spline curve fitting using dominant points in order to compactly represent the antenna commands. We transform the problem of command size reduction into a geometric problem that is relatively easier to deal with. The command data are interpreted as points in a 2D space. The geometric properties of the data distribution are considered to determine the optimal parameters for a curve approximating the data with sufficient accuracy. Experimental results demonstrate that the proposed method is superior to conventional methods currently used in practice.

목차

Abstract
1. Introduction
2. Technical Background
3. B-spline Method Using Dominant Points
4. Application to Satellite Communication
5. Analysis of Data Size for Transmission
6. Examples
7. Conclusions
References

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