Title :
Advances in microwave digital radiometry
Author :
Piepmeier, J.R. ; Gasiewski, A.J. ; Almodovar, E.
Author_Institution :
Microwave Instrum. Technol. Branch, NASA Goddard Space Flight Center, Greenbelt, MD, USA
Abstract :
The increasing availability of discrete and integrated high-speed digital logic has enabled the advancement of microwave digital radiometry for Earth science applications. The first digital radiometers were used for autocorrelation spectroscopy with bandwidths of a few megahertz. Current digital radiometers operate with bandwidths of hundreds-of-megahertz. The applications of digital radiometers have been extended to include polarimetry, interferometry, and total power radiometry. Future technology development opportunities include increasing the speed and lowering the power of digital processors, track-and-hold circuits, and analog-to-digital converters
Keywords :
atmospheric measuring apparatus; atmospheric techniques; geophysical equipment; geophysical techniques; hydrological equipment; hydrological techniques; radiometers; remote sensing; terrain mapping; analog-to-digital converter; atmosphere; autocorrelation spectroscopy; digital radiometer; equipment; geophysical measurement technique; hydrology; instrument; integrated high-speed digital logic; interferometry; land surface; meteorology; microwave digital radiometry; microwave radiometer; polarimetry; remote sensing; soil moisture; terrain mapping; total power radiometry; track-and-hold circuit; Autocorrelation; Bandwidth; Circuits; Geoscience; Logic; Microwave radiometry; Polarimetry; Radio interferometry; Radiometers; Spectroscopy;
Conference_Titel :
Geoscience and Remote Sensing Symposium, 2000. Proceedings. IGARSS 2000. IEEE 2000 International
Conference_Location :
Honolulu, HI
Print_ISBN :
0-7803-6359-0
DOI :
10.1109/IGARSS.2000.860262
