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长春光学精密机械与物... [1]
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会议论文 [1]
发表日期
2005 [1]
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INS's error compensation on the base of the celestial theodolite (EI CONFERENCE)
会议论文
ICO20: Optical Devices and Instruments, August 21, 2005 - August 26, 2005, Changchun, China
Zhao H.-B.
;
Guo L.-H.
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提交时间:2013/03/25
In recent years there has been a major upsurge of interest in the integrated inertial navigation system (INS)/celestial navigation system (CNS) as a cost-effective way of providing accurate and reliable navigation aid for civil and military vehicles (ships
aircrafts
land vehicles and so on). One of the disadvantages of INS is its errors will grow unbounded. The CNS can be used to improve position estimation resulting from INS measurement. This paper describes the design of this. An error model developed earlier is used for CNS/INS filter (Kalman filter) mechanization. In CNS
celestial theodolite acquires an image of the sky
recognize the most brilliant stars in the image
creates with them a "constellation"
and searches for this pattern in an on board star catalogue of the observed region to get the precise position and attitude information of vehicles. The Kalman filter method is used to fuse measurement from the system. We can use this information to compensate INS's error. The tests carry out with this system show that system will get accurate navigation information.
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