Results 131 to 140 of about 2,129 (173)
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Effect of dust on microwave radiometry
1992 IEEE Aerospace Applications Conference Digest, 1992A description of the atmospheric effects on electromagnetic-wave transmission is obtained by modeling the attenuation due to water vapor, oxygen, rainfall, snow, clouds, and dust. The technique developed for calculating the attenuation due to dust is an extension to that used for calculating the attenuation due to rainfall, and it seems to be valid ...
S. Louza, N.F. Audeh
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New Technique for Microwave Radiometry
IEEE Transactions on Microwave Theory and Techniques, 1963An interference modulation technique for microwave radiometry is described. Use of the technique is considered for the development of a radiometer for tuning over a wide range of frequencies, a radiometric device for determining the absolute sensitivity of detectors over a wide range of frequencies, and a means for determining the power level of ...
M.W. Long, J.C. Butterworth
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A physical model for microwave radiometry of vegetation
IEEE Transactions on Geoscience and Remote Sensing, 1997A physical microwave radiometry model based on an iterative solution of the radiative transfer equations is developed for a vegetation canopy. The model generalizes the restrictions imposed by earlier models with regard to the canopy type, the canopy physical temperature profile, and the sky radiation, and it is successfully reduced to those reported ...
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Applications of satellite microwave radiometry
Advances in Space Research, 1987Abstract Data from the Scanning Multichannel Microwave Radiometer (SMMR) onboard Nimbus-7 were applied to (a) retrieval of the water equivalent of snow cover, (b) discrimination of forest types and land-cover categories, (c) determination of the near-surface wind speed in the Baltic Sea, and (d) determination of sea-ice concentration in the Baltic ...
M. Hallikainen, P. Jolma
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Microwave geodesy by interferometric radiometry
Astrophysics and Space Science, 1987The aim of this paper is to establish a new method-first introduced by Soviet scientists in 1972 —for mapping the Earth in the microwave region passively using the interference pattern which results by correlating the signals from two radiometers which presumably can be mounted in two or more moving satellites.
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Microwave radiometry and interferometry of Uranus
Icarus, 1980Abstract We present high-resolution interferometry of Uranus at 6 cm wavelength and single-dish observations of the disk-averaged brightness temperature, T B , at 2.8 and 4.8 cm wavelength. The 1978 measurements of T B of 228 ± 2,243 ± 9, and 259 ± 4 K at 2.8, 4.8, and 6 cm, respectively, support the finding of M. J. Klein and J. A.
F.H. Briggs, B.H. Andrew
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Quantum Fluctuations in Microwave Radiometry
IEEE Transactions on Microwave Theory and Techniques, 1961This paper assesses the possible significance of the quantum nature of electromagnetic radiation in limiting the measurement accuracy attainable with a microwave radiometer. Analogies are shown to exist between the form of a formula describing fluctuations in the radiometer output, and both a formula describing the radiometer input signal, and also, a ...
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Radiative transfer and microwave radiometry
2006This book chapter gives an introduction to radiative transfer with focus on microwave radiometry. The topics discussed include: Kirchhoff's law of thermal radiation; the radiative transfer equation; and polarisation and Stokes parameters.
Christian Mätzler, Christian Melsheimer
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Microwave Radiometry At Matra Space
SPIE Proceedings, 1989Already well-known in optical technology through major space programmes such as the Meteosat IR (Infra-Red) imager and the Spot HRV (High Resolution Visible) camera, Matra has found it necessary to expand the capabilities of their Instrumentation Division in order to match the trend towards passive microwave radiometry.
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