Development of a two dimensional synthetic aperture microwave radiometer

Author

Le Vine, D.M. ; Gatlin, J.A. ; Maruschuk, J.G.

Author_Institution

NASA Goddard Space Flight Center, Greenbelt, MD, USA

fYear

1993

fDate

18-21 Aug 1993

Firstpage

1441

Abstract

Research is being conducted at the Goddard Space Flight Center to develop aperture synthesis in two dimensions for future application to microwave remote sensing of the Earth from space. A laboratory prototype has been assembled consisting of a two element interferometer (two antennas connected together to form a coherent correlation radiometer) mounted on an x-y positioner so that all baselines an a cartesian grid can be measured. The minimum spacing is approximately one-half wavelength and the maximum spacing is about 50 wavelengths. Initial tests have been completed and an image has been successfully obtained. The image was obtained by discretizing the theoretical response of the instrument and using measurements on the actual instrument to correct for gains and offsets in the RF system

Keywords

geophysical equipment; geophysical techniques; microwave imaging; radiometry; radiowave interferometry; remote sensing; 12 GHz; GSFC; Goddard Space Flight Center; SHF; aperture synthesis; artificial satellite; geophysical equipment measurement technique; imaging radiometer; instrument; land surface remote sensing; microwave radiometry; prototype; spacing; synthetic aperture microwave radiometer; terrain mapping; two dimensional; two dimensions; two element interferometer; Antenna measurements; Apertures; Assembly; Earth; Instruments; Laboratories; Microwave radiometry; Prototypes; Remote sensing; Wavelength measurement;

fLanguage

English

Publisher

ieee

Conference_Titel

Geoscience and Remote Sensing Symposium, 1993. IGARSS '93. Better Understanding of Earth Environment., International

Conference_Location

Tokyo

Print_ISBN

0-7803-1240-6

Type

conf

DOI

10.1109/IGARSS.1993.322735

Filename

322735