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Proceedings Paper

Status of focal plane arrays (FPAs) for space-based applications
Author(s): Daniel T. Wilhelm; Raymond K. Purvis; Anjali Singh; D. Z. Richardson; Robert Allan Hahn Jr.; James R. Duffey; W. Thomas Roberts Jr.; Judith A. Ruffner
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Paper Abstract

The past decade has seen extensive development of strategic IR focal plane arrays, with the result that surveillance, tracking, and interceptor sensors are a much more credible force for national and theater defense. Investment in IR detector materials, especially HgCdTe, has resulted in breakthrough improvements in array sensitivity, uniformity, and size, making these materials viable for the vital strategic defense systems currently envisioned for deployment. Development of silicon impurity band conductor detector arrays has resulted in arrays for the very long-wave IR that approach theoretical limits for performance in the surveillance applications of tomorrow. Programs for the development of readout circuitry have allowed array sizes to increase dramatically, while permitting longer operational lifetimes in space radiation environments with reduced electronics noise. Efforts under these development programs to cut array costs, while improving yield and performance, are preparing us for programs to manufacture the number required at a cost that will allow the surveillance system to be affordable. This paper presents an overview of space sensor missions, technical progress from recently completed programs, status of ongoing efforts, and speculation about development needs and directions for the future.

Paper Details

Date Published: 22 July 1994
PDF: 23 pages
Proc. SPIE 2217, Aerial Surveillance Sensing Including Obscured and Underground Object Detection, (22 July 1994); doi: 10.1117/12.179961
Show Author Affiliations
Daniel T. Wilhelm, Air Force Phillips Lab. (United States)
Raymond K. Purvis, Air Force Phillips Lab. (United States)
Anjali Singh, Air Force Phillips Lab. (United States)
D. Z. Richardson, Air Force Phillips Lab. (United States)
Robert Allan Hahn Jr., Air Force Phillips Lab. (United States)
James R. Duffey, S-Cubed (United States)
W. Thomas Roberts Jr., Nichols Research Corp. (United States)
Judith A. Ruffner, Univ. of Arizona (United States)

Published in SPIE Proceedings Vol. 2217:
Aerial Surveillance Sensing Including Obscured and Underground Object Detection
Ivan Cindrich; Nancy DelGrande; Sankaran Gowrinathan; Peter B. Johnson; James F. Shanley, Editor(s)

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