Results 21 to 30 of about 25,781 (306)

Fusion of sentinel-1 SAR and sentinel-2 MSI data for accurate Urban land use-land cover classification in Gondar City, Ethiopia

Environmental Systems Research, 2023
Effective urban planning and management rely on accurate land cover mapping, which can be achieved through the combination of remote sensing data and machine learning algorithms.
Shimelis Sishah Dagne, Hurgesa Hundera Hirpha, Addisu Teshome Tekoye, Yeshambel Barko Dessie, Adane Addis Endeshaw   +4 more
doaj   +1 more source

Sentinel-1A Product Geolocation Accuracy: Commissioning Phase Results [PDF]

Remote Sensing, 2015
Sentinel-1A (S1A) is an Earth observation satellite carrying a state-of-the-art Synthetic Aperture Radar (SAR) imaging instrument. It was launched by the European Space Agency (ESA) on 3 April 2014. With the end of the in-orbit commissioning phase having been completed at the end of September 2014, S1A data products are already consistently providing ...
Adrian Schubert, David Small, Nuno Miranda, Dirk Geudtner, Erich Meier   +4 more
openaire   +2 more sources

Quantitative estimation of sentinel-1A interferometric decorrelation using vegetation index

Frontiers in Earth Science, 2022
Sentinel-1A data are widely used in interferometric synthetic aperture radar (InSAR) studies due to the free and open access policy. However, the short wavelength (C-band) of Sentinal-1A data leads to decorrelation in numerous applications, especially in
Jianping Pan, Ruiqi Zhao, Zhengxuan Xu, Zhuoyan Cai, Yuxin Yuan   +4 more
doaj   +1 more source

An integrated geodetic and InSAR technique for the monitoring and detection of active faulting in southwestern Sicily [PDF]

, 2020
We present the results of the analysis of GNSS (Global Navigation Satellite System) and InSAR (Interferometric synthetic-aperture radar) data collected in the frame of a project financed by the “Struttura Terremoti” of INGV (Istituto Nazionale di ...
Barreca Giovanni, Bruno Valentina, Dardanelli Gino, Guglielmino Francesco, Lo Brutto Mauro, Mattia Mario, Pipitone Claudia, Rossi Massimo   +7 more
core   +1 more source

Sentinel-1A/B SAR calibration and performance status

, 2021
Sentinel-1 (S-1) is the European flagship SAR mission initiated by European Space Agency and the European Commission. It is a constellation of two C-band twins satellite providing backscatter globally. The calibration and overall SAR performance of the mission is continuously assessed by the S-1 Mission Performance Center being a joint venture of ...
Miranda, Nuno, Meadows, Peter, Piantanida, Riccardo, Recchia, Andrea, Franceschi, Niccolò, Hajduch, Guillaume, Husson, R, Vincent, Pauline, Small, David, Schubert, Adrian, Mouche, Alexis   +10 more
openaire   +2 more sources

RICE CROP MAPPING USING SENTINEL-1A PHENOLOGICAL METRICS [PDF]

ISPRS - International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2016
Rice is the most important food crop in Vietnam, providing food more than 90 million people and is considered as an essential source of income for majority of rural populations. Monitoring rice-growing areas is thus important to developing successful strategies for food security in the country.
C. F. Chen, N. T. Son, C. R. Chen, L. Y. Chang, S. H. Chiang   +4 more
openaire   +3 more sources

Sentinel-1A – First precise orbit determination results

Advances in Space Research, 2017
Sentinel-1A is the first satellite of the European Copernicus programme. Equipped with a Synthetic Aperture Radar (SAR) instrument the satellite was launched on April 3, 2014. Operational since October 2014 the satellite delivers valuable data for more than two years. The orbit accuracy requirements are given as 5 cm in 3D.
Peter-Contesse, H. (author), Jäggi, Adrian (author), Fernández, JJ (author), Escobar, D. (author), Ayuga, F. (author), Arnold, D (author), Wermuth, M. (author), Hackel, S. (author), Otten, M. (author), Simons, W.J.F. (author), Visser, P.N.A.M. (author), Hugentobler, U. (author), Féménias, P. (author)   +12 more
openaire   +5 more sources

Assessing the feasibility of a National InSAR Ground Deformation Map of Great Britain with Sentinel-1 [PDF]

, 2017
This work assesses the feasibility of national ground deformation monitoring of Great Britain using synthetic aperture radar (SAR) imagery acquired by Copernicus’ Sentinel-1 constellation and interferometric SAR (InSAR) analyses. As of December 2016, the
Bateson, Luke, Brahmi, Mouna, Cigna, Francesca, Marsh, Stuart, Novellino, Alessandro, Sowter, Andrew   +5 more
core   +2 more sources

Independent System Calibration of Sentinel-1B

Remote Sensing, 2017
Sentinel-1B is the second of two C-Band Synthetic Aperture Radar (SAR) satellites of the Sentinel-1 mission, launched in April 2016—two years after the launch of the first satellite, Sentinel-1A.
Marco Schwerdt, Kersten Schmidt, Núria Tous Ramon, Patrick Klenk, Nestor Yague-Martinez, Pau Prats-Iraola, Manfred Zink, Dirk Geudtner   +7 more
doaj   +1 more source

Radiometric Comparison within the Sentinel-1 SAR Constellation over a Wide Backscatter Range

Remote Sensing, 2020
Radiometric calibration adjusts the measured pixel intensity to a physical property, the radar cross section (RCS). After calibration, this relationship is defined over the entire backscatter range: from low image power (near noise) up to high ...
Kersten Schmidt, Marco Schwerdt, Nuno Miranda, Jens Reimann   +3 more
doaj   +1 more source