Separation of presampling and postsampling modulation transfer functions in infrared sensor systems

Richard L. Espinola; Jeffrey T. Olson; Patrick D. O'Shea; Van A. Hodgkin; Eddie L. Jacobs

doi:10.1117/12.663903

16 May 2006 Separation of presampling and postsampling modulation transfer functions in infrared sensor systems

Richard L. Espinola, Jeffrey T. Olson, Patrick D. O'Shea, Van A. Hodgkin, Eddie L. Jacobs

Proceedings Volume 6207, Infrared Imaging Systems: Design, Analysis, Modeling, and Testing XVII; 62070P (2006) https://doi.org/10.1117/12.663903
Event: Defense and Security Symposium, 2006, Orlando (Kissimmee), Florida, United States

Abstract

New methods of measuring the modulation transfer function (MTF) of electro-optical sensor systems are investigated. These methods are designed to allow the separation and extraction of presampling and postsampling components from the total system MTF. The presampling MTF includes all the effects prior to the sampling stage of the imaging process, such as optical blur and detector shape. The postsampling MTF includes all the effects after sampling, such as interpolation filters and display characteristics. Simulation and laboratory measurements are used to assess the utility of these techniques. Knowledge of these components and inclusion into sensor models, such as the U.S. Army RDECOM CERDEC Night Vision and Electronic Sensors Directorate's NVThermIP, will allow more accurate modeling and complete characterization of sensor performance.

Citation Download Citation

Richard L. Espinola, Jeffrey T. Olson, Patrick D. O'Shea, Van A. Hodgkin, and Eddie L. Jacobs "Separation of presampling and postsampling modulation transfer functions in infrared sensor systems", Proc. SPIE 6207, Infrared Imaging Systems: Design, Analysis, Modeling, and Testing XVII, 62070P (16 May 2006); https://doi.org/10.1117/12.663903

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