創新均勻度優化碎形三角網格分割演算法及其追星儀隨載資料庫篩選之應用 none

NCUIR > Engineering College > Graduate Institute of opto-Mechatronics > Electronic Thesis & Dissertation > Item 987654321/43436

Please use this identifier to cite or link to this item: http://ir.lib.ncu.edu.tw/handle/987654321/43436

Title:	創新均勻度優化碎形三角網格分割演算法及其追星儀隨載資料庫篩選之應用 none
Authors:	潘建宏;Jian-hong Pan
Contributors:	光機電工程研究所
Keywords:	三角網格分割;星圖目錄;選星;追星儀;triangular mesh;star tracker;star catalog;guide star selection
Date:	2010-07-19
Issue Date:	2010-12-08 13:38:44 (UTC+8)
Publisher:	國立中央大學
Abstract:	為提供一均勻的星圖目錄給追星儀當作比對的星體資料庫，本文提出了利用均勻度優化碎形三角網格分割演算法產生視線，再以視線選星演算法對原始的星圖目錄做篩選，最後生成均勻的追星儀隨載星體資料庫。也因為本文是使用視線選星演算法選星，所以視線分佈的均勻度會直接影響到選星後星圖目錄的均勻度。對於此問題，本文提出了兩個衡量視線分佈的均勻度指標。再透過這兩個指標，選出較好的視線分佈演算法，進而選星得到較均勻的追星儀隨載星體資料庫。 To have an uniform star catalog to be an onboard star database, an algorithm called Uniformity Enhanced Fractal Triangular Mesh to produce line of sights is employed. Then, use these line of sights which are in the directions of the field of views to select stars into the star catalog. On account of the characters of selecting stars by line of sights, the uniformity of line of sights will effect the uniformity of the on-board star catalog directly. This problem can be analyzed by calculating two indices: the coverage ratio of line of sights and worst distribution ratio of line of sights. Better line of sights distribution will be chosen by comparing the indices. A more uniform star catalog will be produced by the more uniform line of sights consequently.
Appears in Collections:	[Graduate Institute of opto-Mechatronics] Electronic Thesis & Dissertation

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