18 February 1981 Submillisecond Measurements Of System Optical Modulation Functions In Mosaic Focal Plane Arrays
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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.
© (1981) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Paul E. Thurlow, Paul E. Thurlow, } "Submillisecond Measurements Of System Optical Modulation Functions In Mosaic Focal Plane Arrays", Proc. SPIE 0244, Mosaic Focal Plane Methodologies I, (18 February 1981); doi: 10.1117/12.959321; https://doi.org/10.1117/12.959321
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