饶长辉,姜文汉,凌宁.低对比度扩展目标跟踪算法[J].天文学报,2001,42(3):329. RAO Chang Hui JIANG Wen Han LING Ning. TRACKING ALGORITHM FOR LOW CONTRAST EXTENDED OBJECT[J]. Acta Astronomica Sinica,2001,42(3):329.