【摘要】：精細導星星庫是空間大口徑望遠鏡開展導星過程的必要組成部分,是用來確定空間望遠鏡視軸絕對指向的關(guān)鍵依據(jù)�；A(chǔ)星表的挑選、導星星庫的容量、劃分方式和天區(qū)搜索速度對于實現(xiàn)精細導星功能和性能指標都極為重要。在視場約為0.08deg2精度要求高的條件下,選用UCAC4星表作為基礎(chǔ)星表,提出混合分區(qū)星等過濾算法進行導星篩選,為了實現(xiàn)星表的快速搜索,對導星星表的存取方式進行了詳細分析,構(gòu)建了一個由約400萬顆10mv~16mv導星組成的精細導星星庫,并進行星庫均勻性和搜索速度分析。仿真結(jié)果表明,基于UCAC4星表構(gòu)建的16mv精細導星星庫全局均勻性達到0.44,導星搜索時間0.05s,視場中星數(shù)適中,能被高效識別的概率達到75.51%,可作為精細導星星圖識別的基準,支撐未來大口徑空間望遠鏡的觀測。
[Abstract]:The fine star database is a necessary part of the space telescope to guide the star, and is the key basis for determining the absolute direction of the space telescope's axis of view. The selection of the basic star catalog, the capacity of the guide star library, the partition method and the search speed of the sky area are all very important for the realization of the fine guide star function and performance index. Under the condition that the field of view is about high precision of 0.08deg2, the UCAC4 catalog is selected as the basic catalog, and the mixed partition magnitude filtering algorithm is proposed to filter the guide stars. In order to realize the fast search of the star catalog, the access mode of the guide star table is analyzed in detail. A fine guide star library consisting of about 4 million 10mv~16mv guide stars was constructed, and the uniformity and search speed of the database were analyzed. The simulation results show that the global uniformity of the 16mv fine guide star database based on the UCAC4 catalog is 0.44, the guide search time is 0.05 s, the number of stars in the field of view is moderate, and the probability of recognition can be reached to 75.51, which can be used as a benchmark for fine star map recognition. To support future observations of large-aperture space telescopes.
【作者單位】： 中國科學院上海技術(shù)物理研究所;中國科學院大學;中國科學院紅外探測與成像重點實驗室;
【基金】：國家自然科學基金資助項目(40776100)
【分類號】：P111

【參考文獻】

相關(guān)期刊論文 前6條

1 崔祥祥;王宏力;陸敬輝;喬興;鄧長智;張勇;趙愛罡;;適用于小視場星敏感器的導航星表構(gòu)建方法[J];紅外與激光工程;2015年04期

2 陸敬輝;王宏力;袁宇;崔祥祥;許哲;;均勻快速的導航星選取方法[J];紅外與激光工程;2015年01期

3 時圣革;雷肖劍;于長海;;星圖識別三角形算法綜述[J];光電技術(shù)應(yīng)用;2014年05期

4 李輝;王安國;張磊;;改進金字塔算法用于小視場星圖識別[J];應(yīng)用光學;2013年02期

5 朱長征;居永忠;杜曉輝;;導航星庫制定方法研究[J];宇航學報;2010年05期

6 馬濤;孫紅輝;肖松;劉朝山;;基于BP神經(jīng)網(wǎng)絡(luò)的小樣本星圖識別方法[J];應(yīng)用光學;2009年02期

【共引文獻】

相關(guān)期刊論文 前10條

1 袁曉波;張超;時春霖;;一種改進的基于K矢量的星圖識別算法[J];導航定位學報;2017年02期

2 趙sヰ，

本文編號：2272385