Television – Special applications – Observation of or from a specific location
Patent
1997-09-29
2000-02-08
Britton, Howard
Television
Special applications
Observation of or from a specific location
348116, 348117, 701 4, 701 13, H04N 718
Patent
active
060232919
ABSTRACT:
A method and system is disclosed for imaging a celestial object, typically the Earth, with a spacecraft orbiting the celestial object. The method includes steps of (a) operating an imager instrument aboard the spacecraft to generate data representing an image of the celestial object; (b) processing the image data to derive the location of at least one predetermined landmark in the image and a location of edges of the celestial object in the image; and (c) further processing the detected locations to obtain the attitude of the imager instrument. The method includes a further step of outputting the image and the imager instrument attitude to at least one end-user of the image, and/or using the imager instrument attitude to revise the image before outputting the image to the at least one end-user of the image. The generated data preferably represents a one half frame image, and the steps of processing and further processing thus occur at a one half frame rate. The step of processing includes a step of applying the a priori knowledge of the attitude coefficients in processing new observations to determine the imager current attitude.
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Kamel Ahmed A
Ong Kwok M
Britton Howard
Space Systems Loral, Inc.
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