Radiant energy – Photocells; circuits and apparatus – Photocell controls its own optical systems
Reexamination Certificate
2005-07-12
2005-07-12
Luu, Thanh X. (Department: 2878)
Radiant energy
Photocells; circuits and apparatus
Photocell controls its own optical systems
C701S013000, C244S164000
Reexamination Certificate
active
06917025
ABSTRACT:
A combined earth-star sensor system (1) for three-axis attitude determination of satellites in space comprises separate apertures with different directions of observation and common image pickup devices (4) for the earth sensor and the star sensor. A common optical arrangement (2) for earth observation and start observation, and a deflection mirror (3) for derivation of the laterally entering light from the earth, to the common optical arrangement (2) may be provided. In one focal plane there is a focal plane sensor with an array of image pickup devices (4) with the integration time being controllable. An evaluation unit determines the orbit and the attitude of the space vehicle from the attitude and movement of the stars and of the rim of the earth in the focal plane.
REFERENCES:
patent: 5189295 (1993-02-01), Falbel
patent: 5319969 (1994-06-01), Billing-Ross et al.
patent: 6252627 (2001-06-01), Frame et al.
patent: 0589387 (1994-03-01), None
patent: 5-052549 (1993-03-01), None
Diehl Hermann
Gottzein Evelyne
Platz Willi
Zinner Helmut
Astrium GmbH
Ladas & Parry LLP
Luu Thanh X.
LandOfFree
Combined earth/star sensor system and method for determining... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Combined earth/star sensor system and method for determining..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Combined earth/star sensor system and method for determining... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3414896