Constraints-Based Optical Hybrid Navigation for Small-Body Close Flybys

doi:10.2514/1.G001847

	Constraints-Based Optical Hybrid Navigation for Small-Body Close Flybys
	Bu, Yanlong 6,7; Yang, Yang 5; Tang, Wenlin 4; Ding, Chibiao 3; Yin, Hejun 1,2
刊名	JOURNAL OF GUIDANCE CONTROL AND DYNAMICS
	2019-05-01
卷号	42 期号:5 页码:1093-1104
ISSN号	0731-5090
DOI	10.2514/1.G001847
英文摘要	This paper proposes a new optical hybrid navigation method for use in close flybys of small celestial bodies. Two steps are taken to estimate the inertial position and attitude of the spacecraft: 1) The relative motion between the spacecraft and the center of mass of the small body is determined by processing the images taken from the onboard monocular camera using the photogrammetric technique. 2) The absolute state is determined by establishing an accurate displacement increment equation, which is based on various constraints and integrates both optical and radiometric observations. No a priori precise alignment information of onboard cameras is needed for the whole process. The flyby of asteroid Toutatis by Chang'e-2 in 2012 is selected as a case study. The position accuracy of Chang'e-2 in the inertial frame is improved significantly from 15 to 5 km. The inertial pointing of the camera is obtained with an uncertainty of 0.003 deg, which is more precise than the given initial value of 0.5 deg. The proposed method is also beneficial to the camera alignment calibration, with the error reduced to 0.05 deg from the nominal value of 0.5 deg.
WOS研究方向	Engineering ; Instruments & Instrumentation
语种	英语
出版者	AMER INST AERONAUTICS ASTRONAUTICS
WOS记录号	WOS:000466741700010
内容类型	期刊论文
源URL	[http://ir.amss.ac.cn/handle/2S8OKBNM/34676]
专题	中国科学院数学与系统科学研究院
通讯作者	Bu, Yanlong
作者单位	1.Chinese Acad Sci, Beijing 100190, Peoples R China 2.Chinese Acad Sci, Chinas Lunar Explorat Program, Beijing 100190, Peoples R China 3.Chinese Acad Sci, Inst Elect, Beijing 100190, Peoples R China 4.Chinese Acad Sci, Natl Ctr Math & Interdisciplinary Sci, Acad Math & Syst Sci, Beijing 100190, Peoples R China 5.RMIT Univ, SPACE Res Ctr, Sch Sci, Melbourne, Vic 3001, Australia 6.Chinese Acad Sci, Inst Elect, Beijing 100094, Peoples R China 7.Beijing Aerosp Command & Control Ctr, Flight Dynam Lab, Beijing 100094, Peoples R China
推荐引用方式 GB/T 7714	Bu, Yanlong,Yang, Yang,Tang, Wenlin,et al. Constraints-Based Optical Hybrid Navigation for Small-Body Close Flybys[J]. JOURNAL OF GUIDANCE CONTROL AND DYNAMICS,2019,42(5):1093-1104.
APA	Bu, Yanlong,Yang, Yang,Tang, Wenlin,Ding, Chibiao,&Yin, Hejun.(2019).Constraints-Based Optical Hybrid Navigation for Small-Body Close Flybys.JOURNAL OF GUIDANCE CONTROL AND DYNAMICS,42(5),1093-1104.
MLA	Bu, Yanlong,et al."Constraints-Based Optical Hybrid Navigation for Small-Body Close Flybys".JOURNAL OF GUIDANCE CONTROL AND DYNAMICS 42.5(2019):1093-1104.