Results 171 to 180 of about 481,380 (197)

Vicarious Cold Calibration for Conical Scanning Microwave Imagers

IEEE Transactions on Geoscience and Remote Sensing, 2017
Vicarious cold calibration (VCC) for spaceborne microwave radiometers is analyzed and modified for application to conical scanning microwave imagers at frequencies from 6 to 90 GHz. The details of the algorithm are modified to account for additional frequencies and polarizations that were not included in the development of the original algorithm.
Rachael A. Kroodsma, Darren S. McKague, Christopher S. Ruf   +2 more
openaire   +1 more source

A Method Suitable for Vicarious Calibration of a UAV Hyperspectral Remote Sensor [PDF]

IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing, 2015
A sensor aboard an unmanned aerial vehicle (UAV) is vulnerable to vibration and natural conditions such as erratic winds. Considering the difference between laboratory and vicarious environments of calibration, a vicarious calibration is closer to the ...
Bing Zhang, Hao Zhang, Haiwei Li
exaly   +2 more sources

Stability of the vicarious cold calibration statistic for the GPM constellation

2010 IEEE International Geoscience and Remote Sensing Symposium, 2010
The vicarious cold calibration statistic has been analyzed to determine its stability. Modeled top of atmosphere brightness temperatures representing microwave radiometer observations are computed for the month of July 2005 using a radiative transfer model. The vicarious cold calibration algorithm is applied to the population of brightness temperatures
Rachael Kroodsma, Darren McKague, John J. Puckett, Christopher Ruf   +3 more
openaire   +1 more source

Vicarious Calibration of the Meteosat Visible Channel

Journal of Atmospheric and Oceanic Technology, 1993
Abstract Postlaunch calibration of the Meteosat visible (VIS) channel has been performed with Meteosat-1, Meteosat-2, and Meteosat-4. The radiance at the satellite radiometer aperture has been determined by independent means and has been related to the simultaneous satellite radiometer count.
Karl-Theodor Kriebel, Volker Amann
openaire   +1 more source

Vicarious Calibration of the Formosat-2 Remote Sensing Instrument

IEEE Transactions on Geoscience and Remote Sensing, 2010
We describe the results of the in-orbit radiometric calibration of the remote sensing instrument (RSI) onboard Formosat-2, based on the ground data collected by the advanced spaceborne thermal emission and reflection radiometer (ASTER) calibration team at Ivanpah Playa and Railroad Valley during the regular field campaigns in 2006 and 2008.
Cheng-Chien Liu, Akihide Kamei, Kuo-Hsien Hsu, Satoshi Tsuchida, H.-M. Huang, Soushi Kato, Ryosuke Nakamura, An-Ming Wu   +7 more
openaire   +1 more source

Initial results of the FLARE vicarious calibration network

Earth Observing Systems XXV, 2020
The SPecular Array Radiometric Calibration (SPARC) methodology uses convex mirrors to relay an image of the sun to a satellite, airborne sensor, or other Earth Observation platform. The signal created by SPARC can be used to derive absolute, traceable calibration coefficients of Earth remote sensing systems in the solar reflective spectrum.
Brandon Russell, Daniel Scharpf, Jeff Holt, Will Arnold, Christopher N. Durell, Joseph Jablonski, David Conran, Stephen J. Schiller, Larry Leigh, David Aaron, Pedro Valle de Carvalho e Oliveira   +10 more
openaire   +1 more source

Calibration of WindSat polarimetric channels with a vicarious cold reference

IEEE Transactions on Geoscience and Remote Sensing, 2006
Absolute calibration of WindSat's third and fourth Stokes brightness temperatures (T/sub 3/ and T/sub 4/) is needed at the tenth of Kelvin level in order to adequately resolve their dependence on wind direction. Previous aircraft based fully polarimetric microwave radiometers have generally relied on "circle flights", during which a single area of the ...
Christopher S. Ruf, Ying Hu, Shannon T. Brown   +2 more
openaire   +2 more sources

Preflight and Vicarious Calibration of Hyperspectral Imagers

2007
Abstract : We developed a calibration plan for a hyperspectral sensor and then designed, built, and calibrated three major instruments to support such calibrations. The instruments included two transfer radiometers, one covering the visible and near infrared using a silicon detector, and another covering the short-wave infrared using a cooled InGaAs ...
S. F. Biggar, K. J. Thome
openaire   +1 more source

Evaluation and Application of On-Orbit Calibration of the Automated Vicarious Calibration System

IEEE Transactions on Geoscience and Remote Sensing, 2023
Dong Huang, Xin Li, Xiaobing Zheng, Wei Wei, Quan Zhang, Fuxiang Guo   +5 more
openaire   +2 more sources

Development and application of automated vicarious calibration system

Chinese Optics Letters, 2017
In order to improve the frequency and precision of radiometric calibration, the automated vicarious calibration system (AVCS) is developed and deployed at the Dunhuang test site to perform vicarious calibration without the in situ manned measurements. The surface and atmospheric parameters are automatically collected by AVCS.
Wei Wei Wei Wei, Shuai Song Shuai Song, Yangang Sun Yangang Sun, Ganggang Qiu Ganggang Qiu, Xin Li Xin Li, Xiaobing Zheng Xiaobing Zheng   +5 more
openaire   +1 more source