| 摘要: |
| 针对三角形算法中模式识别率低、易造成误识别的问题,提出了一种改进的三角形算法。
首先,该算法通过对全天区导航星进行筛选,缩小星库存储空间;同时,在识别过程中对找到的三
边角距集合采用设置状态标识的方法,加快对探测星三角形的识别速度;在三角形匹配识别结果
不唯一时,引入其他观测星进行验证,确定唯一的匹配对应;在识别结束后,应用投影验证检验识
别结果。仿真结果表明,该算法能够有效地节省存储空间,缩短全天星图识别时间,与传统的三角
形算法相比具有较大的优势。 |
| 关键词: 星敏感器 星图识别 三角形算法 投影验证 |
| DOI： |
|
| 基金项目:国家自然科学基金(62003051) |
|
| An Improved Fast All-Sky Star Map Recognition AlgorithmLIANG Ying, CAI Shan-jun, ZHANG Li-na,YU Xing |
| LIANGYing,CAIShan-jun,ZHANGLi-na,YUXing |
| (BeijingInstituteofAutomaticControlEquipment,Beijing100074,China) |
| Abstract: |
| Aimingattheproblemoflowpatternrecognitionandeasytocausemisrecognitionintrianglealgorithm,
thispaperpresentsanimprovedtrianglealgorithm. Firstly,thealgorithm
screensnavigationstarsintheall-skyregioninordertosavestoragespace.Secondly,themethod
ofsettingthestatusmarkofnavigationstarsisadoptedtospeeduptheangulardistancematching
intherecognitionprocess. Whenthetrianglematchingresultisnotunique,afourthobservation
starisintroducedforverificationtodeterminetheuniquematchingcorrespondence.Finally,atthe
endofidentification,projectionverificationisappliedtotestrecognitionresult.Simulationiscarriedoutandtheresultshowsthatthealgorithmcannotonlysavestoragespaceeffectively,
butalsoreducethetimeinall-
skymaprecognitionandhasgreatadvantagesoverthetraditionaltriangle
algorithm |
| Key words: Starsensor Starmapidentification Trianglealgorithm Projectionverification |
