Scanning earth sensor using the sun's position for determining y

Details Scanning earth sensor using the sun's position for determining y Scanning earth sensor using the sun's position for determining y

1992-06-24

1993-11-02

Peters, Jr., Joseph F.

Aeronautics and astronautics

Spacecraft

With special crew accommodations

244164, 2502061, 364459, B64G 136

Patent

active

052577600

ABSTRACT:
A scanning sensor having a radiation detector is mounted on a spacecraft or satellite orbiting the earth. The scanner is pointed in such a way with respect to the orbit plane of the satellite that the instantaneous field of view of the detector crosses the region between the lower and upper limits of the travel of a celestial body in a year in order for the radiation detector of the earth sensor to encounter the celestial body at least once per orbit. Electrical signals based on the horizon crossing and the presence of a celestial body in the field of view of the detector are generated and used to derive Yaw, Pitch and Roll attitude information for the satellite with respect to the earth.

REFERENCES:
patent: 3337160 (1967-08-01), Eckermann, Jr.
patent: 3521835 (1970-07-01), Braga-Illa et al.
patent: 4827422 (1989-05-01), Savoca
patent: 5048774 (1991-09-01), Savoca
patent: 5062051 (1991-10-01), Sainct et al.
patent: 5080307 (1992-01-01), Smay et al.
patent: 5142150 (1992-08-01), Sparvieri et al.

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