On the imaging of hot spots using correlation radiometers and a circular aperture

Author

Schaller, Gerd

Author_Institution

Inst. fur Hochfrequenztech., Erlangen-Nurnberg Univ., West Germany

Volume

37

Issue

8

fYear

1989

fDate

8/1/1989 12:00:00 AM

Firstpage

1210

Lastpage

1216

Abstract

Results of computer simulations are presented for a microwave correlation radiometer system that uses a circular synthetic aperture for imaging hot spots in homogeneous lossy tissue. The previously described system (see IEEE MTT-5 Int. Microwave Symp. Dig., p.155-6, 1988) combined with a reconstruction algorithm has the ability to reconstruct correctly the position and the power density ratios of point-shaped noise sources with spatial resolution that is nearly constant in all directions and all over the object plane. It is shown that inexactly known attenuation and phase constants of the tissue affect the reconstructions only slightly

Keywords

digital simulation; microwave imaging; radiometry; attenuation constants; circular aperture; computer simulations; correlation radiometers; homogeneous lossy tissue; hot spots; phase constants; point-shaped noise sources; power density ratios; reconstruction algorithm; spatial resolution; Apertures; Attenuation; Biomedical imaging; Image reconstruction; Medical diagnostic imaging; Microwave imaging; Radiometers; Reconstruction algorithms; Spatial resolution; Temperature;

fLanguage

English

Journal_Title

Microwave Theory and Techniques, IEEE Transactions on

Publisher

ieee

ISSN

0018-9480

Type

jour

DOI

10.1109/22.31080

Filename

31080