Patterned singular value approach for robust star pattern matching algorithm패턴화된 특이값을 통한 강건한 별 패턴 매칭 알고리듬

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dc.contributor.advisorBang, Hyochoong-
dc.contributor.authorKim, Kiduck-
dc.description학위논문(박사) - 한국과학기술원 : 항공우주공학과, 2020.8,[v, 102 p. :]-
dc.description.abstractIn the work reported in this paper, a lost-in-space star-pattern-identification algorithm for agile spacecraft was studied. Generally, the operation of a star tracker is known to exhibit serious degradation or even failure during fast attitude maneuvers. While tracking methods are widely used solutions to handle the dynamic conditions, they require prior information about the initial orientation. Therefore, the tracking methods may not be adequate for autonomy of attitude and control systems. In this paper a novel autonomous identification method for dynamic conditions is proposed. Additional constraints are taken into account that can significantly decrease the number of stars imaged and the centroid accuracy. A strategy combining two existing classes for star pattern identification is proposed. The new approach is intended to provide a unique way to determine the identity of stars that promises robustness against noise and rapid identification. Moreover, representative algorithms implemented in actual space applications were utilized as counterparts to analyze the performance of the proposed method in various scenarios. Numerical simulations show that the proposed method is not only highly robust against positional noise and false stars, but also guarantees fast run-time, which is appropriate for high-speed applications.-
dc.subjectAgile satellite▼aStar tracker▼aStar sensor▼aStar identification▼aStar pattern recognition▼aSingular value▼aPattern matching-
dc.subject고기동 위성▼a별 추적기▼a별 센서▼a별 인식▼a별 패턴 매칭▼a특이값▼a패턴 매칭-
dc.titlePatterned singular value approach for robust star pattern matching algorithm-
dc.title.alternative패턴화된 특이값을 통한 강건한 별 패턴 매칭 알고리듬-
dc.description.department한국과학기술원 :항공우주공학과,-
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