Results 61 to 70 of about 173,444 (351)
LEDs: Sources and Intrinsically Bandwidth-Limited Detectors
Sensors, 2017 The increasing demand for light emitting diodes (LEDs) is driven by a number of application categories, including display backlighting, communications, signage, and general illumination.
Roberto Filippo +2 more
doaj +1 more source
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
core +1 more source
Detecting and attributing climate change effects on vegetation: Australia as a test case
PLANTS, PEOPLE, PLANET, EarlyView.Climate change is contributing to vegetation changes that threaten life support systems. Yet, inherent climatic variability and past and present human actions—such as clearing, burning and grazing regimes—also alter vegetation and complicate understanding of vegetation change. Australian ecosystems exemplify such complexity.
Laura J. Williams +14 more
wiley +1 more source
IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing, 2022 This article extends the application of an existing change-detection-based, time-series soil moisture retrieval algorithm to nonconcurrent active and passive measurements from WindSat/AMSR2 and the Soil Moisture Active Passive radar, which was active ...
Jeffrey D. Ouellette +8 more
doaj +1 more source
, 1966 Radiometer-pyrometer measures the spectral absorption, emission, and temperature of gases. The major problems involved in spectroradiometric measurements are nonuniform spectral sensitivity, nonlinearity, poor absolute accuracy, wide range of intensities,
core +1 more source
Thermal susceptibility of the Planck-LFI receivers [PDF]
, 2009 This paper is part of the Prelaunch status LFI papers published on JINST: http://www.iop.org/EJ/journal/-page=extra.proc5/jinst . This paper describes the impact of the Planck Low Frequency Instrument front end physical temperature fluctuations on the ...
A Colin +47 more
core +2 more sources
Assessing wildfire dynamics during a megafire in Portugal using the MesoNH/ForeFire coupled model
Quarterly Journal of the Royal Meteorological Society, EarlyView.Weather conditions affect megafires by inducing different fire behaviors over several days or weeks. The coupled MesoNH/ForeFire code was used to represent the dynamics of fire generating pyro‐convective clouds. To advance the understanding of wildfire dynamics, high‐resolution coupled fire–atmosphere modeling was employed.
Cátia Campos +12 more
wiley +1 more source
Demonstration of a Combined Active/Passive L-Band Microwave Remote Sensing Airborne Instrument
IEEE Journal of Selected Topics in Applied Earth Observations and Remote SensingThe passive and active L-band system (PALS) is an airborne microwave instrument suite that combines a separate radar and radiometer airborne instrument with a common antenna.
Mehmet Ogut +7 more
doaj +1 more source
CONSTRUCTION OF MM-BAND AND CM-BAND RADIOMETERS BASED ON SATELLITE LOW NOISE BLOCKS [PDF]
Радиофизика и электроника, 2016 Features of construction of mm-band and cm-band radiometers based on satellite low noise blocks (SLNB) are examined. The characteristics of the developed and constructed radiometer layout are presented.
I. M. Mytsenko, D. D. Khalameyda
doaj +1 more source
Design and Implementation of a Novel Interferometric Microwave Radiometer for Human Body Temperature Measurement [PDF]
, 2021 Guangmin Sun +5 more
openalex +1 more source