CSpace
Constraints-Based Optical Hybrid Navigation for Small-Body Close Flybys
Bu, Yanlong1,2; Yang, Yang3; Tang, Wenlin4; Ding, Chibiao5; Yin, Hejun6,7
2019-05-01
Source PublicationJOURNAL OF GUIDANCE CONTROL AND DYNAMICS
ISSN0731-5090
Volume42Issue:5Pages:1093-1104
AbstractThis 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.
DOI10.2514/1.G001847
Language英语
WOS Research AreaEngineering ; Instruments & Instrumentation
WOS SubjectEngineering, Aerospace ; Instruments & Instrumentation
WOS IDWOS:000466741700010
PublisherAMER INST AERONAUTICS ASTRONAUTICS
Citation statistics
Document Type期刊论文
Identifierhttp://ir.amss.ac.cn/handle/2S8OKBNM/34677
Collection中国科学院数学与系统科学研究院
Corresponding AuthorBu, Yanlong
Affiliation1.Beijing Aerosp Command & Control Ctr, Flight Dynam Lab, Beijing 100094, Peoples R China
2.Chinese Acad Sci, Inst Elect, Beijing 100094, Peoples R China
3.RMIT Univ, SPACE Res Ctr, Sch Sci, Melbourne, Vic 3001, Australia
4.Chinese Acad Sci, Natl Ctr Math & Interdisciplinary Sci, Acad Math & Syst Sci, Beijing 100190, Peoples R China
5.Chinese Acad Sci, Inst Elect, Beijing 100190, Peoples R China
6.Chinese Acad Sci, Chinas Lunar Explorat Program, Beijing 100190, Peoples R China
7.Chinese Acad Sci, Beijing 100190, Peoples R China
Recommended Citation
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.
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