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Proceedings Paper

CMOS active pixel sensor specific performance effects on star tracker/imager position accuracy
Author(s): Bruce R. Hancock; Robert C. Stirbl; Thomas J. Cunningham; Bedabrata Pain; Christopher J. Wrigley; Peter G. Ringold
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Paper Abstract

This paper gives the status of theoretical and experimental efforts at JPL in the development of environmentally robust (Radiation Hard and radiation Tolerant), ultra-low power, high performance CMOS active pixel sensor (APS) imagers for start tracker/imager applications. The work explores the effect of imager performance on star position accuracy, specifically examining the performance of JPL designed APS imagers. Accuracy is estimated as a function of star magnitude for a nominal star tracker optical design. Using these APS sensors, which have wide dynamic range and no blooming, simultaneous imaging of widely differing star magnitudes during the same observation is possible. It is shown that prototype Rad Hard APS imagers meet many next generation, star tracker/imager mission performance requirements when operated at reduced temperatures. These imagers also provide excellent performance at cryogenic operating temperatures appropriate to some anticipate flight missions. APS imagers with their high level of integration, on-chip timing and control, ultra-low power, and environmental robustness are excellent candidates for NASA's earth observing, interplanetary and deep space exploration missions.

Paper Details

Date Published: 15 May 2001
PDF: 11 pages
Proc. SPIE 4284, Functional Integration of Opto-Electro-Mechanical Devices and Systems, (15 May 2001); doi: 10.1117/12.426872
Show Author Affiliations
Bruce R. Hancock, Jet Propulsion Lab. (United States)
Robert C. Stirbl, Jet Propulsion Lab. (United States)
Thomas J. Cunningham, Jet Propulsion Lab. (United States)
Bedabrata Pain, Jet Propulsion Lab. (United States)
Christopher J. Wrigley, Jet Propulsion Lab. (United States)
Peter G. Ringold, Jet Propulsion Lab. (United States)

Published in SPIE Proceedings Vol. 4284:
Functional Integration of Opto-Electro-Mechanical Devices and Systems
Michael R. Descour; Juha T. Rantala, Editor(s)

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