Results 191 to 200 of about 35,504 (247)
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Passive microwave remote sensing of the Earth's surface
IEEE Transactions on Antennas and Propagation, 1976This is a brief review paper on microwave radiometry as a remote sensing tool in geoscientific investigations. Topics covered include basic radiometric principles, radiometer receivers, and applications. This paper is one in a series of mini-reviews sponsored by the Wave Propagation Standards Committee of IEEE and is intended primarily for those ...
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IEEE Transactions on Geoscience and Remote Sensing, 2000
A technique based on microwave passive polarimetry for the estimates of ionospheric Faraday rotation for microwave remote sensing of Earth surfaces is described. Under the assumption of azimuth symmetry for the surfaces under investigation, it is possible to estimate the ionospheric Faraday rotation from the third Stokes parameter of microwave ...
S H Yueh
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A technique based on microwave passive polarimetry for the estimates of ionospheric Faraday rotation for microwave remote sensing of Earth surfaces is described. Under the assumption of azimuth symmetry for the surfaces under investigation, it is possible to estimate the ionospheric Faraday rotation from the third Stokes parameter of microwave ...
S H Yueh
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Atmospheric influences analysis in passive microwave remote sensing
2015 IEEE International Geoscience and Remote Sensing Symposium (IGARSS), 2015Passive microwave remote sensing has all-weather work capabilities, but atmospheric media have different influences on satellite microwave brightness temperature under different atmospheric conditions and environments. In order to clarify atmospheric influences on Advanced Microwave Scanning Radiometer-Earth Observing System (AMSR-E), atmospheric ...
Lijuan Shi +3 more
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Passive microwave remote sensing of forests: a model investigation
IEEE Transactions on Geoscience and Remote Sensing, 1996A model, based on the radiative transfer theory and the matrix doubling algorithm, is described and used to compute the emissivity e of forests. According to model simulations, the L-band emissivity trend versus forest biomass is more gradual than that of the backscatter coefficient.
Paolo Ferrazzoli, Leila Guerriero
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Combined receiver for active and passive microwave remote sensing
2017 IEEE International Geoscience and Remote Sensing Symposium (IGARSS), 2017Existing spaceborne radiometer receivers, particularly below 40GHz, have typically utilized analog direct detection, but recently have been pushing toward heterodyne systems with digital signal processing to deal with the problem of radio frequency interference (RFI).
Chun-Sik Chae +5 more
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Passive microwave remote sensing of the atmosphere and ocean
Proceedings of the Indian Academy of Sciences Section C: Engineering Sciences, 1983The microwave remote sensing experiments conducted during the last decade using airborne and spaceborne sensors are now evolving as operational spacecraft observation systems. Microwave sounding unit (MUS) onboard TIROS-N regularly provides global atmospheric temperature profile required for numerical weather prediction.
T. A. Hariharan, P. C. Pandey
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Passive microwave remote sensing of soil moisture
International Journal of Remote Sensing, 1985Abstract Results of radiometric measurements over bare soil obtained with a horizontally polarized microwave radiometer at 19·1 GHz frequency are presented. Radiometer measurements were made with incidence angles varying from 10 to 50°. Ground-truth acquisition of soil moisture in the 0–1 cm layer and of soil temperature near the surface was made ...
A. D. VYAS +4 more
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Passive microwave remote sensing of soil moisture
Journal of Hydrology, 1996Microwave remote sensing provides a unique capability for direct observation of soil moisture. Remote measurements from space afford the possibility of obtaining frequent, global sampling of soil moisture over a large fraction of the Earth's land surface.
Eni G. Njoku, Dara Entekhabi
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Passive microwave remote sensing of vegetation biomass
Proceedings of IGARSS '94 - 1994 IEEE International Geoscience and Remote Sensing Symposium, 2002Experimental and theoretical investigations carried out over the past years at CNR in Florence and by other scientists worldwide, have pointed out that microwave emission is sensitive to vegetation biomass. The potential of microwave radiometry in the detection of vegetation biomass on different spatial scales has been further investigated by analyzing
Macelloni G +4 more
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Passive remote sensing at microwave wavelengths
Proceedings of the IEEE, 1969Passive remote sensing at microwave frequencies has applications which range from meteorology to oceanography and geology. The meteorological applications are the most fully developed and include measurements of the temperature profile of the atmosphere and of the atmospheric distribution of H 2 O and O 3 .
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