Results 181 to 190 of about 1,312 (210)

Evaluation of vicarious calibration for airborne sensors using RadCalNet

Journal of Applied Remote Sensing, 2020
Vicarious calibration approaches using in-situ measurements are key techniques applied to on-orbit remote sensors. The in-situ measurements have advantages in terms of traceability and quantifiable accuracy that make them ideal for inter-consistency studies of on-orbit sensors.
Brian N. Wenny, Kurtis Thome, Jeff Czapla-Myers   +2 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 Radiometric Calibrations of EOS Sensors

Journal of Atmospheric and Oceanic Technology, 1996
Abstract Four methods for the in-flight radiometric calibration and cross calibration of multispectral imaging sensors are described. Three make use of ground-based reflectance, irradiance, and radiance measurements in conjunction with atmospheric measurements and one compares calibrations between sensors.
Phlip N. Slater, Stuart F. Biggar, Kurtis J. Thome, David I. Gellman, Paul R. Spyak   +4 more
openaire   +1 more source

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 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

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

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   +1 more source

Vicarious calibration of Terra ASTER, MISR, and MODIS

SPIE Proceedings, 2004
The Advanced Spaceborne Thermal Emission and Reflection and Radiometer (ASTER), Multi-angle Imaging Spectroradiometer (MISR) and Moderate Resolution Imaging Spectroradiometer (MODIS) are all onboard the Terra platform. An important aspect of the use of MODIS, and other Earth Science Enterprise sensors, has been the characterization and calibration of ...
Kurtis J. Thome, Stuart F. Biggar, Hyun J. Choi   +2 more
openaire   +1 more source

Automated test-site radiometer for vicarious calibration

SPIE Proceedings, 2014
In order to realize unmanned vicarious calibration, Automated Test-site Radiometer (ATR) was developed for surface reflectance measurements. ATR samples the spectrum from 400nm-1600 nm with 8 interference filters coupled with silicon and InGaAs detectors. The field of view each channel is 10 ° with parallel optical axis.
Xin Li, Ya-peng Yin, En-chao Liu, Yan-na Zhang, Li-na Xun, Wei Wei, Zhi-peng Zhang, Gang-gang Qiu, Quan Zhang, Xiao-bing Zheng   +9 more
openaire   +1 more source

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