Results 51 to 60 of about 9,704 (200)

Theoretical study of ice cover phenology at large freshwater lakes based on SMOS MIRAS data [PDF]

open access: yesThe Cryosphere, 2018
The paper presents a theoretical analysis of seasonal brightness temperature variations at a number of large freshwater lakes: Baikal, Ladoga, Great Bear Lake (GBL), Great Slave Lake (GSL), and Huron, retrieved from Microwave Imaging Radiometer with ...
V. Tikhonov   +4 more
doaj   +1 more source

First results of a GNSS-R experiment from a stratospheric balloon over boreal forests [PDF]

open access: yes, 2015
The empirical results of a global navigation satellite systems reflectometry (GNSS-R) experiment onboard the Balloon EXperiments for University Students (BEXUS) 17 stratospheric balloon performed north of Sweden over boreal forests show that the power of
Camps Carmona, Adriano José   +3 more
core   +2 more sources

A compact receiver system for simultaneous measurements of mesospheric CO and O3 [PDF]

open access: yesGeoscientific Instrumentation, Methods and Data Systems, 2016
During the last decades, ground-based microwave radiometry has matured into an established remote sensing technique for measuring vertical profiles of a number of gases in the stratosphere and the mesosphere. Microwave radiometry is the only ground-based
P. Forkman   +5 more
doaj   +1 more source

The correlation of visibility noise and its impact on the radiometric resolution of an aperture synthesis radiometer [PDF]

open access: yes, 2000
The correlation between the visibility samples' noise of an aperture synthesis radiometer are required for the computation of the recovered temperature noise of a given pixel and of the improvement introduced by baseline redundance.
Bará Temes, Francisco Javier   +3 more
core   +1 more source

Analysis of a Least-Squares Soil Moisture Retrieval Algorithm from L-band Passive Observations

open access: yesRemote Sensing, 2010
The Soil Moisture and Ocean Salinity (SMOS) mission of the European Space Agency (ESA), launched on November 2009, is an unprecedented initiative to globally monitor surface soil moisture using a novel 2-D L-band interferometric radiometer concept ...
Alessandra Monerris   +4 more
doaj   +1 more source

Diurnal variations in middle-atmospheric water vapor by ground-based microwave radiometry [PDF]

open access: yesAtmospheric Chemistry and Physics, 2013
In this paper, we compare the diurnal variations in middle-atmospheric water vapor as measured by two ground-based microwave radiometers in the Alpine region near Bern, Switzerland.
D. Scheiben   +3 more
doaj   +1 more source

Adaptive filter for microwave radiometry

open access: yesElectronics Letters, 1970
An adaptive filter, which combines the advantages of both short (about 0.5 s) and long (about 2 min) integrating time constants, is described. The recording time constant will be long for a steady level of input signal, but will proportionally shorten when there is a change in the average level of the input signal. If steady conditions continue after a
openaire   +1 more source

Modification of black-body radiance at low temperatures and frequencies

open access: yes, 2010
In contrast to earlier reports, where the spectrum of the {\sl energy density} of photonic black-body radiation modified by SU(2) effects was discussed, we discuss the low-frequency spectrum of the {\sl radiance} at temperatures ranging between 5 and 20 ...
Giacosa   +13 more
core   +1 more source

Ground data investigations Mt. Lassen, site 56-mission 76 [PDF]

open access: yes
Microwave radiometry and infrared photography for meteorological ...
Brennan, P. A.   +2 more
core   +1 more source

Basic data requirements for microwave radiometer systems [PDF]

open access: yes
Microwave radiometry has emerged over the last two decades to become an integral part of the field of environmental remote sensing. Numerous investigations were conducted to evaluate the use of microwave radiometry for atmospheric, oceanographic ...
Lawrence, R. W.
core   +1 more source

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