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Proceedings Paper

Submillisecond Measurements Of System Optical Modulation Functions In Mosaic Focal Plane Arrays
Author(s): Paul E. Thurlow
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Paper Abstract

Measurements of system optical modulation functions (MTF, SWR) may be distorted by time-dependent environmental effects (thermal, vibration, flexure) and by electronics drift. Fast data collection may therefore be advantageous by minimizing drift time. The problem of fast data collection is accentuated when modulation data must be taken on a large number of detectors in a focal plane array. A method has been developed for generation and storage of knife edge data from focal plane arrays, where data collection time per detector is in the sub-millisecond range. Once knife edge collects are completed, MTF response is found using conventional convolution techniques. SWR is obtained directly from knife edge response using a computerized simulation algorithm which bypasses use of MTF harmonics. Requirements for detector electronics speed, damping, and dynamic range are considered.

Paper Details

Date Published: 18 February 1981
PDF: 4 pages
Proc. SPIE 0244, Mosaic Focal Plane Methodologies I, (18 February 1981); doi: 10.1117/12.959321
Show Author Affiliations
Paul E. Thurlow, Santa Barbara Research Center (United States)

Published in SPIE Proceedings Vol. 0244:
Mosaic Focal Plane Methodologies I
William S. Chan, Editor(s)

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