Linear System Theory

doi:10.1117/3.2588947.ch4

Book: Electro-Optical Imaging System Performance, Sixth Edition

Author(s): Gerald C. Holst

Published: 2017

https://doi.org/10.1117/3.2588947.ch4

Author Affiliations +

Abstract

Linear filter theory was developed for electronic circuitry and has been applied to optical, electro-optical, and mechanical systems. Linear filter theory forms an indispensable part of system analysis. Spatial domain analysis becomes quite complex for even simple electro-optical imaging systems. It is far easier to perform calculations in the frequency domain. Fourier transforms link the spatial and frequency domains.