초록 ▼

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

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.

대표청구항 ▼

A star sensor comprising: CCD means for detecting the light rays of a star and for producing an output representative of the intensity distribution of said light rays at various points of said CCD means; means for counting clock pulses with which said CCD means is driven; means for filtering said ou

A star sensor comprising: CCD means for detecting the light rays of a star and for producing an output representative of the intensity distribution of said light rays at various points of said CCD means; means for counting clock pulses with which said CCD means is driven; means for filtering said output of said CCD means to produce an envelope signal representative of an envelope component thereof, said envelope signal having a zero crossing point; means for detecting the zero-crossing point of said envelope signal to produce a detecting means output; and computing means responsive to the output of said detecting means and to the output of said counting means for proving a signal representative of the position of said star.