Matricial representation of the transfer function for aliased systems

Jose Manuel Lopez-Alonso; Javier Alda

doi:10.1117/12.477478

29 July 2002 Matricial representation of the transfer function for aliased systems

Proceedings Volume 4719, Infrared and Passive Millimeter-wave Imaging Systems: Design, Analysis, Modeling, and Testing; (2002) https://doi.org/10.1117/12.477478
Event: AeroSense 2002, 2002, Orlando, FL, United States

Abstract

Aliasing characterization is a critical problem in the description of pixelated image acquisition system such as focal plane array cameras for infrared image-forming systems. The aliased spatial frequency spectrum contains only those frequencies below the Nyquist limit. The higher- than- Nyquist frequency components are aliased onto lower- than-Nyquist frequencies. This effect can be described by means of a matricial transformation that is a folded version of the non-aliased transfer function of the system. This matricial analysis helps to understand the effect of the sampling. The transformation can be related with an aliased Modulation Transfer Function (MTF). Several examples of the application of the method are presented along with the description of the matricial formalism.

Citation Download Citation

Jose Manuel Lopez-Alonso and Javier Alda "Matricial representation of the transfer function for aliased systems", Proc. SPIE 4719, Infrared and Passive Millimeter-wave Imaging Systems: Design, Analysis, Modeling, and Testing, (29 July 2002); https://doi.org/10.1117/12.477478

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