USAF space sensing cryogenic considerations

Erin N. Pettyjohn

doi:10.1117/12.878962

4 February 2011 USAF space sensing cryogenic considerations

Erin N. Pettyjohn

Proceedings Volume 7951, Laser Refrigeration of Solids IV; 795102 (2011) https://doi.org/10.1117/12.878962
Event: SPIE OPTO, 2011, San Francisco, California, United States

Abstract

Infrared (IR) space sensing missions of the future depend on low mass, highly capable imaging technologies. Limitations in visible imaging due to the earth's shadow drive the use of IR surveillance methods for a wide variety of applications. Utilization of IR sensors greatly improves mission capabilities including target behavioral discrimination. Background IR emissions and electronic noise that is inherently present in Focal Plane Arrays (FPAs) and surveillance optics bench designs obviates their use unless they are cooled to cryogenic temperatures. The interaction between cryogenic refrigeration component performance and the IR sensor optics and FPA can be seen as not only mission enabling but also as mission performance enhancing when the refrigeration system is considered as part of an overall optimization problem.

Citation Download Citation

Erin N. Pettyjohn "USAF space sensing cryogenic considerations", Proc. SPIE 7951, Laser Refrigeration of Solids IV, 795102 (4 February 2011); https://doi.org/10.1117/12.878962

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