Title :
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
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;
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
DOI :
10.1109/IGARSS.1993.322735
