Results 141 to 150 of about 6,939,496 (164)

Automated Generation of Hyperspectral Fiducial Reference Measurements of Water and Land Surface Reflectance for the Hypernets Networks

2021 IEEE International Geoscience and Remote Sensing Symposium IGARSS, 2021
The HYPERNETS land and water networks are a set of autonomous field sites for the measurement of fiducial reference measurements of hyperspectral surface reflectance for a wide range of surface types for use in satellite Earth observation validation.
Samuel E Hunt, Pieter de Vis, Clémence Goyens   +2 more
exaly   +3 more sources

Fiducial Reference Measurements for Satellite Altimetry Calibration

2017
The concept of Fiducial Reference Measurements for Altimetry has been recommended and defined by the European Space Agency as: "The suite of independent ground measurements that provide the maximum Return-On-Investment for a satellite mission by delivering, to users, the required confidence in data products, in the form of independent validation ...
Mertikas, Stelios, Donlon, Craig, Mavrocordatos, Constantine, Galanakis, Demitris, Féménias, Pierre, Tripolitsiotis, Achilles, Fratzis, Xenofon   +6 more
openaire   +1 more source

Fiducial Reference Measurements for validation of Sentinel-2 and Proba-V surface reflectance products

Remote Sensing of Environment, 2020
Abstract Many derived Earth Observation products share surface reflectance as a common step in their processing chains. This makes the maintenance and improvement of surface reflectance product quality of fundamental importance to ensure information derived from these downstream products can be trusted.
Niall Origo, Javier Gorroño, James Ryder, Joanne Nightingale, Agnieszka Bialek   +4 more
openaire   +1 more source

Fiducial Reference Measurements for Satellite Altimetry Calibration in Crete, Greece

2016
To establish a continuous, homogeneous and reliable monitoring of the ocean and its changes, altimetry observations have to be free of errors and biases, uninterrupted, but also tied from one mission to the next in an objective and absolute sense. Altimetry system’s responses have to be, thus, continuously monitored and controlled for their quality ...
Mertikas, Stelios, Donlon, Craig, Mavrocordatos, Constantine, Féménias, Pierre, Parrinello, Tommaso, Picot, Nicolas, Desjonqueres, Jean-Damien, Andersen, Ole   +7 more
openaire   +1 more source

The Measurement Model of Copernicus TRUSTED Fiducial Reference Measurement Drifting Buoys for Sea Surface Temperature

Journal of Atmospheric and Oceanic Technology
Abstract The European Union’s Copernicus-funded project Toward Fiducial Reference Measurements of Sea Surface Temperature by European Drifters (TRUSTED) has made progress toward fiducial reference measurements (FRMs) from drifting buoys for sea surface temperature (SST).
Le Menn, Marc, O'Carroll, Anne, Woolliams, Emma, Lucas, Marc, Izquierdo, Carmen Garcia, Merlone, Andrea   +5 more
openaire   +1 more source

Using fiducial reference measurements for assessing soil moisture product stability

The Global Climate Observing System Essential Climate Variables (GCOS ECVs) requirements define a target threshold of 0.005 m³/m³ per decade for satellite soil moisture product stability. As admitted by GCOS, this threshold lacks robust justification in the scientific literature, prompting critical assessment.
Daniel Aberer, Nicolas Bader, Irene Himmelbauer, Wolfgang Preimesberger, Alexander Boresch, Monika Tercjak, François Gibon, Arnaud Mialon, Raffaele Crapolicchio, Wouter Dorigo, Alexander Gruber   +10 more
openaire   +1 more source

Contributions to satellite altimetry calibration with microwave transponders and corner reflectors in the context of fiducial reference measurements

2023
Η παρούσα διατριβή βελτιώνει την ακρίβεια βαθμονόμησης των προϊόντων των δορυφόρων αλτιμετρίας με: (1) ενίσχυση υπαρχουσών τεχνικών, (2) συνδυασμό τεχνικών ενεργών και παθητικών στόχων, (3) εισαγωγή νέων τεχνικών βαθμονόμησης, και (4) επανεξέταση των συμβατικών τεχνικών επεξεργασίας.Η δορυφορική αλτιμετρία συμβάλλει στην κατανόηση των διαδικασιών που ...
openaire   +1 more source

Multi-mission Calibrations results at the Permanent Facility for Altimetry Calibration in west Crete, Greece attaining Fiducial Reference Measurement Standards

2017
This work presents the updated results for the calibration & validation of several altimeter satellites (Jason-2, Jason-3, Sentinel-3, CryoSat-2, HY-2, SARAL/AltiKa) determined at the permanent facility for altimetry calibration, west Crete, Greece. These absolute Cal/Val results are obtained using sea-surface and transponder techniques followed by
Mertikas, Stelios, Donlon, Craig, Mavrocordatos, Constantine, Féménias, Pierre, Galanakis, Demitris, Tziavos, Ilias, Boy, Francois, Vergos, George, Andersen, Ole, Frantzis, Xenofon, Lin, Mingsen, Tripolitsiotis, Achilles   +11 more
openaire   +1 more source

Fiducial Reference Measurements for monitoring satellite altimetry at the ESA Permanent Facility for Altimetry Calibration in Crete and Gavdos

The growing number of altimetry satellites, payloads, manufacturers, as well as accelerated developments in measuring techniques and data processing, urgently call for measures to ensure the quality of satellite products for Earth observation. Such sought indicators of quality to be properly working, must be reliable, indisputable, tied and traceable ...
Mertikas, Stelios, Donlon, Craig, Woolliams, Emma, Collard, Fabrice, Kokolakis, Costas, Piretzidis, Dimitrios, Tripolitsiotis, Achilles, Frantzis, Xenofon   +7 more
openaire   +1 more source

A multi-sensor optical coordinate measurement machine for measuring freeform optical surface form and reference fiducial position

Optifab 2023, 2023
Rens Henselmans, Rogier Ellenbroek, Dirk-Jan Kroon   +2 more
openaire   +1 more source