Computer Science
Scientific paper
Jan 1984
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1984stin...8429092m&link_type=abstract
Final Technical Report, 17 Aug. 1982 - 31 Jan. 1984 General Electric Co., Schenectady, NY. Signal Electronics Lab.
Computer Science
Charge Injection Devices, Charge Transfer Devices, Focal Plane Devices, Imaging Techniques, Interfaces, Noise Spectra, Star Trackers, Analog To Digital Converters, Circuit Boards, Masks, Shot Noise, Solid State, Temperature Control
Scientific paper
An improved Charge Injection Device (CID) stellar tracking sensor and an operating sensor in a control/readout electronics board were developed. The sensor consists of a shift register scanned, 256x256 CID array organized for readout of 4x4 subarrays. The 4x4 subarrays can be positioned anywhere within the 256x256 array with a 2 pixel resolution. This allows continuous tracking of a number of stars simultaneously since nine pixels (3x3) centered on any star can always be read out. Organization and operation of this sensor and the improvements in design and semiconductor processing are described. A hermetic package incorporating an internal thermoelectric cooler assembled using low temperature solders was developed. The electronics board, which contains the sensor drivers, amplifiers, sample hold circuits, multiplexer, analog to digital converter, and the sensor temperature control circuits, is also described. Packaged sensors were evaluated for readout efficiency, spectral quantum efficiency, temporal noise, fixed pattern noise, and dark current. Eight sensors along with two tracker electronics boards were completed, evaluated, and delivered.
Burke H.-H. K.
Michon G.-J.
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