Target identification performance as a function of spurious response: aliasing with respect to the half sample rate

Steven K. Moyer; Ronald G. Driggers; Richard H. Vollmerhausen; Keith A. Krapels

doi:10.1117/12.439161

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10 September 2001 Target identification performance as a function of spurious response: aliasing with respect to the half sample rate

Steven K. Moyer, Ronald G. Driggers, Richard H. Vollmerhausen, Keith A. Krapels

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Proceedings Volume 4372, Infrared Imaging Systems: Design, Analysis, Modeling, and Testing XII; (2001) https://doi.org/10.1117/12.439161
Event: Aerospace/Defense Sensing, Simulation, and Controls, 2001, Orlando, FL, United States

Abstract

The sampling limitations associated with focal plane array imagers caused an aliased signal that corrupts the image. The aliased signal is a function of pre-sample blur, sampling frequency, and post-blur or image reconstruction. Previous experiments at the U.S. Army Night Vision and Electronic Sensors Directorate have quantified the effect of aliasing on the task of infrared target identification. Based on data from these experiments, the MTF Squeeze model was developed. The degraded performance due to under- sampling was modeled as an increase in system blur or, equivalently, a contraction or `squeeze' in the MTF. This paper describes the results of numerous sampling experiments.

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Steven K. Moyer, Ronald G. Driggers, Richard H. Vollmerhausen, and Keith A. Krapels "Target identification performance as a function of spurious response: aliasing with respect to the half sample rate", Proc. SPIE 4372, Infrared Imaging Systems: Design, Analysis, Modeling, and Testing XII, (10 September 2001); https://doi.org/10.1117/12.439161

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