Filters








209 Hits in 3.0 sec

Calibration approach and plan for the sea and land surface temperature radiometer

David L. Smith, Tim J. Nightingale, Hugh Mortimer, Kevin Middleton, Ruben Edeson, Caroline V. Cox, Chris T. Mutlow, Brian J. Maddison, Peter Coppo
2014 Journal of Applied Remote Sensing  
Finally, the authors will present the planning for the on-orbit monitoring and calibration activities to ensure that the calibration is maintained.  ...  The authors describe the preparations for the prelaunch calibration activities, including the spectral response, the instrument level alignment tests, and the solar and infrared radiometric calibrations  ...  The SLSTR calibration activities are funded through the ESA Sentinel-3 mission project.  ... 
doi:10.1117/1.jrs.8.084980 fatcat:36e7sw4xzfgldh77te5ts47dky

Calibration monitoring of the visible and near-infrared channels of the Along-Track Scanning Radiometer-2 by use of stable terrestrial sites

Dave L. Smith, Chris T. Mutlow, C. R. Nagaraja Rao
2002 Applied Optics  
The Along-Track Scanning Radiometer-2 ͑ATSR-2͒ is equipped with visible and near-infrared channels at 1.6, 0.87, 0.66, and 0.56 m.  ...  We describe the methods used to determine the long-term drifts in the ATSR-2 onboard calibration device and evaluate the suitability of the sites for calibration monitoring.  ...  The authors thank Phil Watts of the Rutherford Appleton Laboratory ͑RAL͒ for advice on cloud clearing and Richard Siddans of RAL for extracting GOME ozone columns over Greenland.  ... 
doi:10.1364/ao.41.000515 pmid:11911109 fatcat:gzblefwitbaa5ijo2n42f2alxe

Sentinel-3a: commissioning phase results of its optical payload

J. Nieke, C. Mavrocordatos, Nikos Karafolas, Bruno Cugny, Zoran Sodnik
2017 International Conference on Space Optics — ICSO 2016  
The calibration mechanism allows a view of the Earth surface or one of several on-board calibration targets through a slit window by rotating each target mounted on a calibration wheel into the instrument  ...  SWIR channels: 0.5 km MWIR/TIR and fire: 1 km at Sub-Satellite Point (SSP) Calibration Two on-board calibration reference black bodies (BBs) and one Visible calibration unit (VISCAL) viewed respectively  ... 
doi:10.1117/12.2296174 fatcat:tj32gdws5nhfpe2fuocovngbty

Sentinel-3A/B SLSTR Pre-Launch Calibration of the Thermal InfraRed Channels

Dave Smith, Marc Barillot, Stephane Bianchi, Fabio Brandani, Peter Coppo, Mireya Etxaluze, Johannes Frerick, Steffen Kirschstein, Arrow Lee, Brian Maddison, Elliot Newman, Tim Nightingale (+2 others)
2020 Remote Sensing  
The radiometric calibrations of the thermal infrared channels were validated against accurate and traceable reference BB sources under flight representative thermal vacuum environment.  ...  The internal stray light error was reduced for SLSTR-B by replacing the coating on the main aperture stop. We present a description of the test methodology and the key results.  ...  We wish to thank all the people involved in the pre-launch calibration activities at RAL-Space, ESA, Leonardo and Thales-F. Conflicts of Interest: The authors declare no conflict of interest.  ... 
doi:10.3390/rs12162510 fatcat:ck2gfte75vhvpkel3he5huqxje

Challenges for In-Flight Calibration of Thermal Infrared Instruments for Earth Observation

David Smith, Daniel Peters, Timothy Nightingale, Jonathan Pearce, Radka Veltcheva
2020 Remote Sensing  
A key issue for flight BB sources is to maintain the traceability of the radiometric calibration from ground to orbit.  ...  All these instruments are dependent on blackbody (BB) calibration sources to provide the traceability of the radiometric calibration to SI (Système International d'Unités).  ...  NGenIRS team including Luke Bushnell, Coraline Dalibot, Kathryn Ford, Robert Hardie, Adam Hughes, Tom Morse, Connor McGurk, Gayatri Patel and Mike Shepherd of RAL Space for designing, building and testing a  ... 
doi:10.3390/rs12111832 fatcat:giauxqo4pzhn3jzgkrsrjyi374

A fast method for retrieval of cloud parameters using oxygen A band measurements from the Global Ozone Monitoring Experiment

R. B. A. Koelemeijer, P. Stammes, J. W. Hovenier, J. F. de Haan
2001 Journal of Geophysical Research  
.: METHOD FOR RETRIEVAL OF CLOUD PARAMETERS reflected solar radiation in the oxygen A-band, J. Climate and Appl. Meteorol., oe.•, 593-546, 1985. Yamamoto, G., and D. Q.  ...  This algorithm is based on the work of Kuze and Chance [1994] and consists of chi-square minimization of a measured and a simulated spectrum from 758 to 778 nm (enclosing the O2 A band), thereby solving  ...  Radiometric Calibration The accuracy of the GOME reflectivities in the continuum at wavelengths around the O2 A band is esti-mated to be 2-3% [Koelemeijer et al., 1998 ].  ... 
doi:10.1029/2000jd900657 fatcat:4b2wdnpoabdyhk62ps4bjskggq

Retrieval of Lake Bulk and Skin Temperatures Using Along-Track Scanning Radiometer (ATSR-2) Data: A Case Study Using Lake Tahoe, California

Simon J. Hook, Fred J. Prata, Ronald E. Alley, Ali Abtahi, Robert C. Richards, S. Geoffrey Schladow, SveinnÓ Pálmarsson
2003 Journal of Atmospheric and Oceanic Technology  
A comparison between the measured skin temperatures, skin temperature recovered by an ATSR-2 two-channel sea surface temperature algorithm, and the in situ regression indicates that the ATSR-2 algorithm  ...  Each monitoring station provides near-real-time measurements of the surface skin temperature and bulk temperature on a near-continuous basis.  ...  The UCD Tahoe Research Group is also thanked for providing numerous suggestions and information in general on Lake Tahoe. The ATSR data were acquired by the ESA and processed courtesy of RAL.  ... 
doi:10.1175/1520-0426(2003)20<534:rolbas>2.0.co;2 fatcat:3xy7a3n6jveg3andxk5lpuknpi

Satellite-based time-series of sea-surface temperature since 1981 for climate applications

Christopher J. Merchant, Owen Embury, Claire E. Bulgin, Thomas Block, Gary K. Corlett, Emma Fiedler, Simon A. Good, Jonathan Mittaz, Nick A. Rayner, David Berry, Steinar Eastwood, Michael Taylor (+4 others)
2019 Scientific Data  
Data are provided at native resolution, gridded at 0.05° latitude-longitude resolution (individual sensors), and aggregated and gap-filled on a daily 0.05° grid.  ...  A climate data record of global sea surface temperature (SST) spanning 1981-2016 has been developed from 4 × 1012 satellite measurements of thermal infra-red radiance.  ...  We are grateful for the testing of a pre-release version of the products undertaken by a group of trail-blazer users.  ... 
doi:10.1038/s41597-019-0236-x pmid:31641133 pmcid:PMC6805873 fatcat:qbo7giajxnghlczkxcm5lsf7de

10. The Calibration and Characterization of Earth Remote Sensing and Environmental Monitoring Instruments [chapter]

James J. Butler, B. Carol Johnson, Robert A. Barnes
2005 Experimental Methods in the Physical Sciences  
Carefully sized and appropriately positioned in a satellite instrument, the solar-illuminated diffuser can provide a full-system, full aperture, on-orbit radiometric calibration using the Sun-the same  ...  calibration systems dictates a total reliance on vicarious calibration for their on-orbit calibration.  ... 
doi:10.1016/s1079-4042(05)41010-3 fatcat:pa7ltcpd6vgtti3itc3ofgdwqm

Intercomparison of integrated IASI and AATSR calibrated radiances

S. M. Illingworth, J. J. Remedios, R. J. Parker
2009 Atmospheric Chemistry and Physics Discussions  
This paper presents a technique and results 5 for the validation of the radiometric calibration of radiances for IASI, using a crosscalibration with the Advanced Along Track Scanning Radiometer (AATSR)  ...  It is believed that a refinement of the AATSR spectral filter function will hopefully permit 15 a tighter error constraint on the quality of the IASI data and hence further assessment of the climate quality  ...  SATSCAN-IR is a project selected by EUMETSAT/ESA under the first EPS/Metop RAO.  ... 
doi:10.5194/acpd-9-8101-2009 fatcat:cxh6l2iwz5fclkzsn5ektwynai

Results of POLDER in-flight calibration

O. Hagolle, P. Goloub, P.-Y. Deschamps, H. Cosnefroy, X. Briottet, T. Bailleul, J.-M. Nicolas, F. Parol, B. Lafrance, M. Herman
1999 IEEE Transactions on Geoscience and Remote Sensing  
Smith in the Rutherford Appleton Laboratory, U.K. for providing ATSR-2 extractions over site Sudan1, and to all the persons in CNES who helped  ...  ADEOS is on a sun synchronous orbit at an altitude of 797 km.  ...  One of POLDER's original features is that its in-flight radiometric calibration does not rely on any on-board device.  ... 
doi:10.1109/36.763266 fatcat:kogfwcfnpvcvbffdffar2p365q

Intercomparison of integrated IASI and AATSR calibrated radiances at 11 and 12 μm

S. M. Illingworth, J. J. Remedios, R. J. Parker
2009 Atmospheric Chemistry and Physics  
This paper presents a technique and first results for the validation of the radiometric calibration of radiances for IASI, using a cross-calibration with the Advanced Along Track Scanning Radiometer (AATSR  ...  It is believed that a refinement of the AATSR spectral filter functions will hopefully permit a tighter error constraint on the quality of the IASI data and hence further assessment of the climate quality  ...  SATSCAN-IR is a project selected by EUMETSAT/ESA under the first EPS/Metop RAO. Edited by: A. Richter  ... 
doi:10.5194/acp-9-6677-2009 fatcat:cob7h4ymtncttj26ty63p622lu

Deriving a sea surface temperature record suitable for climate change research from the along-track scanning radiometers

C.J. Merchant, D. Llewellyn-Jones, R.W. Saunders, N.A. Rayner, E.C. Kent, C.P. Old, D. Berry, A.R. Birks, T. Blackmore, G.K. Corlett, O. Embury, V.L. Jay (+7 others)
2008 Advances in Space Research  
This initiative is called (A)RC: (Advanced) ATSR Re-analysis for Climate.  ...  radiometers (ATSRs).  ...  Acknowledgements (A)RC is funded jointly by the Natural Environment Research Council, the Ministry of Defence, and the Department of Environment, Food and Rural Affairs.  ... 
doi:10.1016/j.asr.2007.07.041 fatcat:azkjuudevvefxouc5sflvoycc4

Intercalibration of vegetation indices from different sensor systems

Michael D Steven, Timothy J Malthus, Frédéric Baret, Hui Xu, Mark J Chopping
2003 Remote Sensing of Environment  
from one instrument to be intercalibrated against another.  ...  A table of conversion coefficents is presented for AVHRR, ATSR-2, Landsat MSS, TM and ETM+, SPOT-2 and SPOT-4 HRV, IRS, IKONOS, SEAWIFS, MISR, MODIS, POLDER, Quickbird and MERIS (see Appendix A for glossary  ...  In vicarious calibration studies, the nominal on-orbit radiometric calibrations of many satellite sensors have been found to fit within their predicted uncertainties, , while Steven (1998) found that  ... 
doi:10.1016/j.rse.2003.08.010 fatcat:uucp7bum4bf6pfoljctzkehh3a

sentinel-3A SLSTR – Early results

Craig Donlon
2016 Zenodo  
Starting with the LEOP (where the satellite is brought into a stable state (solar array deployed and orbit stable), each part of the satellite and payload system is switched on and verified (SIOV).  ...  Long term trend calculated from the mean NEΔT within each orbit calibration gain calculated over 10 scan cycles Example for one orbit (316 on 1 st May 2016) NEΔT = σ DN ∂DN ∂L ⎛ ⎝ ⎜  ... 
doi:10.5281/zenodo.5413964 fatcat:yogtnwxhljb7tkhgrrirg4y4ri
« Previous Showing results 1 — 15 out of 209 results