Star sensor using CCD

Details Star sensor using CCD Star sensor using CCD

1984-07-25

1987-04-14

Ciarlante, Anthony V.

Image analysis

Histogram processing

For setting a threshold

382 68, 358103, G06K 938

Patent

active

046584315

ABSTRACT:
A star sensor which includes a charge-coupled device (CCD) for detecting light rays of a star and for producing an output representative of the distribution of the light rays of the star over the CCD. The CCD output is filtered and a detecting circuit is used for finding the points where the output signal voltage of the filter equals a predetermined level. A computing circuit compares the output of the detecting circuit to a reference voltage to locate peak values of the CCD signal. A data processor uses the generated outputs which correspond to the peak values to calculate the brightness and position of the star.

REFERENCES:
patent: 3985446 (1976-10-01), Feldman et al.
patent: 4227212 (1980-10-01), Woolfson et al.
patent: 4351004 (1982-09-01), Choate et al.
patent: 4499497 (1985-02-01), Levine
Article by G. Borghi et al entitled "Star Detection and Tracking Using CCDs".

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