Results 51 to 60 of about 9,770 (213)
The Use of Cryogenic HEMT Amplifiers in Wide Band Radiometers [PDF]
, 2000 Advances in device fabrication, modelling and design techniques have made wide band, low noise cryogenic amplifiers available at frequencies up to 106 GHz. Microwave radiometry applications as used in radio astronomy capitalize on the low noise and large
Jarosik, Norman
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Geophysical Research Letters, Volume 53, Issue 3, 16 February 2026.Abstract The mesospheric semiannual oscillation (MSAO) in tropical zonal‐mean zonal winds exhibits a strong westward phase around March equinox. It has been thought that the migrating diurnal tide (DW1) plays a role in the initiation of this phase because DW1 peaks around this time and satellite observations have shown it to undergo wave breaking.
Christopher S. Krier +2 more
wiley +1 more source
Microwave cryogenic thermal-noise standards [PDF]
, 1971 Field operational waveguide noise standard with nominal noise temperature of 78.09 plus/minus 0.12 deg K is calibrated more precisely than before. Calibration technique applies to various disciplines such as microwave radiometry, antenna temperature and ...
Stelzried, C. T.
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Titan's Plains Revealed: Evidence for a Layered Surface
Journal of Geophysical Research: Planets, Volume 131, Issue 2, February 2026.Abstract Undifferentiated plains are the most common terrain type on Titan, yet their composition and geologic history remain poorly understood. To better characterize their physical properties, we combined Cassini RADAR measurements from nadir altimetry and side‐looking SAR modes. We analyzed these data using radar backscatter models, finding that the
A. Fine +3 more
wiley +1 more source
Applications of airborne remote sensing in atmospheric sciences research [PDF]
, 1984 This paper explores the potential for airborne remote sensing for atmospheric sciences research. Passive and active techniques from the microwave to visible bands are discussed. It is concluded that technology has progressed sufficiently in several areas
Phillips, B. B. +2 more
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Journal of Geophysical Research: Atmospheres, Volume 131, Issue 2, 28 January 2026.Abstract The characteristics of Pekeris modes as well as Lamb modes are investigated using the new reanalysis data set JAWARA, which spans over 19 years and covers the entire middle atmosphere. Pekeris modes are a class of global normal modes whose energy is trapped in two height regions that is, around the stratopause and the surface, while the energy
Hiroto Sekido, Kaoru Sato
wiley +1 more source
Sensitivity of GNSS-R spaceborne observations to soil moisture and vegetation [PDF]
, 2016 Global navigation satellite systems-reflectometry (GNSS-R) is an emerging remote sensing technique that makes use of navigation signals as signals of opportunity in a multistatic radar configuration, with as many transmitters as navigation satellites are
Camps Carmona, Adriano José +6 more
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SMAP Satellite Microwave Radiometry to Monitor River Flow and Lake Level in the Lower Mekong Basin
Earth and Space Science, Volume 13, Issue 1, January 2026.Abstract The NASA Soil Moisture Active Passive Mission (SMAP) satellite passive microwave radiometry (PMR) capability is demonstrated for measurements of river stage, river discharge, and lake level with in situ gauging data in the Lower Mekong Basin (LMB).
A. Podkowa +3 more
wiley +1 more source
Dynamic Bayesian Nonlinear Calibration [PDF]
, 2014 Statistical calibration where the curve is nonlinear is important in many areas, such as analytical chemistry and radiometry. Especially in radiometry, instrument characteristics change over time, thus calibration is a process that must be conducted as ...
Boone, Edward L., Rivers, Derick L.
core
“Salt Tectonics” on Titan: Radial Labyrinths as Topographic Expressions of Solid‐State Flow
Journal of Geophysical Research: Planets, Volume 131, Issue 1, January 2026.Abstract Surface observations of Saturn's moon Titan revealed features characterized as dissected, elevated plateaus with high valley density known as labyrinth terrains. Of this terrain class, a subtype referred to as radial labyrinth is described as dome‐shaped uplifts with radial channel patterns.
Ashley M. Schoenfeld +4 more
wiley +1 more source