CARABAS-an UWB low frequency SAR

Author

Hellsten, H.

Author_Institution

Dept. for Inf. Technol., Nat. Defense Res. Establ., Linkoping, Sweden

fYear

1992

fDate

1-5 June 1992

Firstpage

1495

Abstract

The significance of low-frequency ultrawideband (UWB) radar imagery has been investigated. In order to verify the theoretical predictions, an airborne SAR (synthetic aperture radar) system, operating over the frequency band 20-90 MHz, has been developed. CARABAS (coherent all radio band sensing) adopts a major part of the shortwave radio band for the transmission and reception of UWB signals. As a result, the system has a high geometric resolution, in particular in relation to the emitted wavelengths. A first data collection campaign took place in January 1992; initial data are still in the phase of evaluation. In the wavelength interval adopted, vegetation is transparent and radiation penetrates the ground to a significant degree. The system is considered capable of mapping structures and objects obscured by vegetation or buried in the ground.<>

Keywords

microwave imaging; military systems; remote sensing by radar; synthetic aperture radar; CARABAS; airborne SAR; coherent all radio band sensing; high geometric resolution; low frequency SAR; radar imagery; shortwave radio band; synthetic aperture radar; ultrawideband; Bandwidth; Frequency; Ground penetrating radar; Optical imaging; Radar imaging; Signal resolution; Speckle; Surveillance; Ultra wideband radar; Vegetation mapping;

fLanguage

English

Publisher

ieee

Conference_Titel

Microwave Symposium Digest, 1992., IEEE MTT-S International

Conference_Location

Albuquerque, NM, USA

ISSN

0149-645X

Print_ISBN

0-7803-0611-2

Type

conf

DOI

10.1109/MWSYM.1992.188295

Filename

188295