Building Earth Observation Cameras

200 Building Earth Observation Cameras

The desired detector for each pixel is selectable with the ROIC data words.

Fourteen FPMs are organized in two rows of seven each such that the detec-

tors have overlap so as to produce a contiguous detector array (after process-

ing) to cover the desired swath of 185 km. For optimal SWIR performance,

the FPA is passively cooled to 210 K. The AT spectral band separation leads

to an approximately 0.96-s time delay between the rst and the last band.

Since the detectors are displaced AT, the yaw axis is steered to compensate

for cross-track image motion due to the Earth’s rotation. The satellite also has

an ...