Results 21 to 30 of about 45,693 (310)

Radiometers and Radiometers [PDF]

open access: yesNature, 1876
I HAVE recently been trying some experiments with a radiometer, obtained from Mr. Browning, and as some of my results are different from what I was led to anticipate, I should like to know whether there is anything special in my particular instrument, or whether other people have noticed the same things.
openaire   +1 more source

Characterization of Rape Field Microwave Emission and Implications to Surface Soil Moisture Retrievals [PDF]

open access: yes, 2012
In the course of Soil Moisture and Ocean Salinity (SMOS) mission calibration and validation activities, a ground based L-band radiometer ELBARA II was situated at the test site Puch in Southern Germany in the Upper Danube Catchment.
Mauser, Wolfram   +14 more
core   +1 more source

A New Remotely Operated Sensor Platform for Interdisciplinary Observations under Sea Ice

open access: yesFrontiers in Marine Science, 2017
Observation of the climate and ecosystem of ice covered polar seas is a timely task for the scientific community. The goal is to assess the drastic and imminent changes of the polar sea ice cover induced by climate change. Retreating and thinning sea ice
Christian Katlein   +5 more
doaj   +1 more source

Characterization of an ellipsoidal radiometer

open access: yesJournal of Research of the National Institute of Standards and Technology, 2003
An ellipsoidal radiometer has been characterized using a 25 mm variable-temperature blackbody as a radiant source. This radiometer is intended for separating radiation from convection effects in fire test methods. The characterization included angular response, responsivity, and purge-gas flow effect studies.
Murthy, Annageri V.   +2 more
openaire   +2 more sources

The data format of the MErcury Radiometer and Thermal Infrared Spectrometer (MERTIS) onboard BepiColombo

open access: yes, 2021
The MErcury Radiometer and Thermal Infrared Spectrometer (MERTIS) is an instrument to study the mineralogy and temperature distribution of Mercury’s surface in unprecedented detail.
Maturilli, Alessandro   +7 more
core   +1 more source

Application of a Change Detection Soil Moisture Retrieval Algorithm to Combined, Semiconcurrent Radiometer, and Radar Observations

open access: yesIEEE 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

CONSTRUCTION OF MM-BAND AND CM-BAND RADIOMETERS BASED ON SATELLITE LOW NOISE BLOCKS [PDF]

open access: yesРадиофизика 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

Calibration of a Polarimetric Microwave Radiometer Using a Double Directional Coupler

open access: yesRemote Sensing, 2021
This paper presents a built-in calibration procedure of a 10-to-20 GHz polarimeter aimed at measuring the I, Q, U Stokes parameters of cosmic microwave background (CMB) radiation.
Luisa de la Fuente   +3 more
doaj   +1 more source

Complex radar system for surface situation control and navigation [PDF]

open access: yesРадиофизика и электроника, 2019
Subject and purpose. The main factor which affects the development of modern marine radars and increase of their efficiency is the correct justification of the concept of construction and selection of technical requirements for the development of new ...
A.V. Kosiakovskiy   +2 more
doaj   +1 more source

Assessment of efficacy and maintenance of light-curing units in dental offices across Punjab: A clinical survey

open access: yesIndian Journal of Dental Sciences, 2019
Aims and Objectives: Curing units in dental offices across Punjab are analyzed for a practical purpose. Materials and Methods: One thousand light-curing units regularly used by the dentists in dental offices across the state of Punjab were examined for ...
Rajinder Bansal   +5 more
doaj   +1 more source

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