Strapdown stellar sensor and holographic lens therefor

Details Strapdown stellar sensor and holographic lens therefor Strapdown stellar sensor and holographic lens therefor

1989-06-22

1991-04-30

Nelms, David C.

Radiant energy

Photocells; circuits and apparatus

Photocell controls its own optical systems

250216, G01J 120

Patent

active

050120816

ABSTRACT:
A star tracker for generating positional information for a vehicle includes a telescope 40 having multiple fields of view for imaging stellar objects. The telescope includes a plurality of radiation detectors 58 and an input lens 45 comprised of, in one embodiment of the invention, a plurality of holographic elements 45a and 45b. The holographic elements direct incident radiation originating from a plurality of stellar objects to an associated one of the radiation detectors. In another embodiment the multiple field of view telescope is comprised of a monocentric ball lens 80. The tracker may further include a multiplexer 60 for sequentially reading out a signal from each of the radiation detectors and a controller 62 coupled to the multiplexer for receiving the signals and for determining from the positions of the stellar objects imaged by the telescope a position of the vehicle.

REFERENCES:
patent: 4184749 (1980-01-01), Grossman
patent: 4189116 (1980-02-01), Ehrich et al.
patent: 4245882 (1981-01-01), Chang

Affiliated with

Also associated with

Rating

Strapdown stellar sensor and holographic lens therefor does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Strapdown stellar sensor and holographic lens therefor, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Strapdown stellar sensor and holographic lens therefor will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-642182