Results 11 to 20 of about 218,168 (254)
Sentinel-1A/B Combined Product Geolocation Accuracy [PDF]
Remote Sensing, 2017 Sentinel-1A and -1B are twin spaceborne synthetic aperture radar (SAR) sensors developed and operated by the European Space Agency under the auspices of the Copernicus Earth observation programme. Launched in April 2014 and April 2016, Sentinel-1A and -1B are currently operating in tandem, in a common orbital configuration to provide an increased ...
Adrian Schubert +3 more
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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 +10 more
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Independent Verification of the Sentinel-1A System Calibration
IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing, 2014 In the frame of the GMES program, the main objective of the Sentinel-1 mission is to ensure the continuity of SAR data acquisitions in C-band for global earth monitoring. Sentinel-1A is the first of two C-band satellites launched in April 2014. In addition to the commissioning of Sentienl-1A executed by ESA, an independent verification of the system ...
Marco Schwerdt +6 more
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Interferometric Evaluation of Sentinel-1A TOPS data [PDF]
, 2015 The European radar satellite Sentinel 1A was launched in April 2014 as the first of the Copernicus Space Component. The Sentinel 1 system has been conceived to provide repeat-pass interferometric capabilities with wide area coverage for medium resolution applications.
Yague-Martinez, Nestor +3 more
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DEFORMATION MEASUREMENT USING SENTINEL-1A/B IMAGERY [PDF]
The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2017 Abstract. Land deformation monitoring based on C-band Synthetic Aperture Radar Sentinel-1A/B imagery is the main focus of this paper. This type of data is exploited using a Persistent Scatterer Interferometry technique. The paper describes a deformation monitoring strategy, which is related to a specific monitoring scenario: a relatively small ...
M. Crosetto +5 more
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Combined Sentinel-1A With Sentinel-2A to Estimate Soil Moisture in Farmland [PDF]
IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing, 2021 In this article, seven filter algorithms were compared. The Lee sigma method was more suitable for estimating soil moisture (SM) than the other filtering methods under different land cover types. First, we used a combination of roughness and the dual-polarized Sentinel-1A backscattering coefficients (VV and VH) to estimate SM in bare soil areas. Second,
Ying Liu, Jiaxin Qian, Hui Yue
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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 +4 more
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Characteristics of Surface Deformation in Lanzhou with Sentinel-1A TOPS [PDF]
Geosciences, 2020 While surface deformations and their impact on buildings have been observed in the city of Lanzhou, it is difficult to find studies of surface deformation and the influential factors in the recent decades. This study was designed to detect the spatial position of these surface deformations and to understand the mechanism behind them.
Yi He +5 more
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Inter-Comparability of Radiometric Performance between Sentinel-1A and Sentinel-1B [PDF]
, 2021 The study shows that Sentinel-1B is more sensitive for low backscatter due to higher TX power and higher RX pattern gain compared to Sentinel-1A. Therefore targets covering a wide backscatter range are compared.
Miranda, Nuno +2 more
core
Early validation of operational SAR wind retrievals from Sentinel-1A [PDF]
2015 IEEE International Geoscience and Remote Sensing Symposium (IGARSS), 2015 The computation of wind speeds at high (< 1 km) resolution from spaceborne synthetic aperture radar (SAR) is a mature geophysical application. A number of researchers, a modest sample of which are cited [1, 2, 3, 4, 5, 6, 7], have described the geophysical relationship between normalized radar cross section (NRCS) and ocean surface wind speed, and how ...
Francis M. Monaldo +3 more
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