Modulation transfer function analysis for focal plane antenna array quasi-optical imagers

Author

Volkov, Leonid V. ; Voronko, Alexander I. ; Volkova, Natalie L.

Author_Institution

IRE, Acad. of Sci., Moscow, Russia

fYear

2004

fDate

27 Sept.-1 Oct. 2004

Firstpage

743

Lastpage

744

Abstract

Effects of image formation, sampling and reconstruction in focal plane antenna array (FPAA) MMW/SMMW imager are analyzed in terms of its spatial frequency response. Rigorous expression for the optical transfer function (OTF) of an imaging subsystem of the imager is derived. Formalism of average modulation transfer functions (MTF) for sampled imaging systems is extended for exact MTF analysis of both the entire FPAA MMW imager and its constituent subsystems.

Keywords

antenna arrays; focal planes; frequency response; image reconstruction; image sampling; optical images; optical transfer function; MMW imager; MTF analysis; OTF; SMMW imager; focal plane antenna array; image formation; image reconstruction; image sampling; imaging subsystem; modulation transfer function analysis; optical transfer function; quasioptical imagers; sampled imaging systems; spatial frequency response; Antenna arrays; Convolution; Field programmable analog arrays; Image analysis; Image reconstruction; Image sampling; Layout; Optical imaging; Sampling methods; Transfer functions;

fLanguage

English

Publisher

ieee

Conference_Titel

Infrared and Millimeter Waves, 2004 and 12th International Conference on Terahertz Electronics, 2004. Conference Digest of the 2004 Joint 29th International Conference on

Print_ISBN

0-7803-8490-3

Type

conf

DOI

10.1109/ICIMW.2004.1422306

Filename

1422306