Boots – shoes – and leggings
Patent
1984-07-20
1987-04-14
Krass, Errol A.
Boots, shoes, and leggings
364459, 342352, G06F 1550, B64G 110
Patent
active
046583610
ABSTRACT:
An apparatus for determining attitude of a satellite by using a star sensor includes a ground terminal equipped with a data processing unit and star catalogue, a star sensor, an estimating the unit for estimating attitude of the satellite and a decision unit for deciding the attitude determination mode I or II in dependence on attitude stability of the satellite. In the mode I, angles representative of the satellite attitude are estimated by the estimating unit on the basis of a star sub-catalogue prepared by utilizing a priori information. In the mode II, the attitude angles are estimated by the data processing unit through data transaction with the ground terminal without resorting to the use of the priori information.
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Lillestrand et al, "Horizon-based Satellite Navigation Systems", Sep. '63, pp. 247-270, IEEE Transactions on Aerospace and Navigational Electronics, vol. ANE-10.
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"Digital Attitude Reference System (Dars)", Cambell et al, vol. 20, No. 1, Spring 1973, pp. 49-67, Journal of the Institute of Nav..
Kawano Katsumi
Kosaka Michitaka
Miyamoto Shoji
Mohri Satoshi
Nakajima Takashi
Black Thomas G.
Hitachi , Ltd.
Krass Errol A.
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