Horizon sensor for a satellite in geostationary orbit

Details Horizon sensor for a satellite in geostationary orbit Horizon sensor for a satellite in geostationary orbit

1974-10-07

1976-02-03

Lieberman, Eli

Radiant energy

Photocells; circuits and apparatus

Photocell controls its own optical systems

250202, 250203R, 250234, 250347, G01J 104

Patent

active

039366294

ABSTRACT:
A horizon sensor for satellites comprising a mask with four sets of four openings one of which receives a projected portion of the earth-space transition line, another is in the form of a grating and the remaining two slit-shaped openings include each a detector on which a secondary image of the grating or of the transition are reflected by an oscillating concave spherical mirror to derive therefrom a digitized measuring signal indicating the position of the transition line.

REFERENCES:
patent: 3237010 (1966-02-01), Elliott et al.
patent: 3732424 (1973-05-01), Wojtulewicz
patent: 3793518 (1974-02-01), Harper

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