| 摘要 |
A vehicle ( 12 ) including a control system ( 18 ) is used for controlling vehicle attitude or angular velocity ( 38 ). The processor ( 24 ) is coupled to a star sensor or tracker ( 22 ) and a memory ( 30 ) that may include a star catalog ( 32 ), and an exclusion list ( 36 ). The exclusion list ( 36 ), a list of stars to be temporarily excluded from consideration when determining attitude or angular velocity or relative alignment of star sensors or trackers, is calculated on-board. Such a calculation prevents the necessity for a costly, periodic, ground calculation and upload of such data. By manipulating the star catalog, or sub-catalogs derived from said catalog, based upon the exclusion list ( 36 ), measurements of such excluded stars are prevented from corrupting the attitude or angular velocity or alignment estimates formulated on board.
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