Results 31 to 40 of about 23,541,003 (316)

Despeckling Sentinel-1 GRD images by deep learning and application to narrow river segmentation [PDF]

, 2021
This paper presents a despeckling method for Sentinel-1 GRD images based on the recently proposed framework "SAR2SAR": a self-supervised training strategy. Training the deep neural network on collections of Sentinel 1 GRD images leads to a despeckling algorithm that is robust to space-variant spatial correlations of speckle.
arxiv   +1 more source

PARKING OCCUPANCY ESTIMATION ON SENTINEL-1 IMAGES [PDF]

ISPRS Annals of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2020
Abstract. This paper presents a method to estimate the occupancy ratio of parkings from SAR satellite images. The algorithm takes as input a series of Sentinel-1 images along with a mask indicating where the parking is located and returns for each image an occupancy ratio. The method is generic and can easily be extended. We validate our results in two
S. Drouyer, C. de Franchis, C. de Franchis   +2 more
openaire   +4 more sources

Combination of Sentinel-1 and Sentinel-2 Data for Tree Species Classification in a Central European Biosphere Reserve

Remote Sensing, 2022
Microwave and optical imaging methods react differently to different land surface parameters and, thus, provide highly complementary information. However, the contribution of individual features from these two domains of the electromagnetic spectrum for ...
M. Lechner, A. Dostálová, M. Hollaus, C. Atzberger, Markus Immitzer   +4 more
semanticscholar   +1 more source

Outlier detection at the parcel-level in wheat and rapeseed crops using multispectral and SAR time series [PDF]

Remote Sens. 2021, 13(5), 956, 2020
This paper studies the detection of anomalous crop development at the parcel-level based on an unsupervised outlier detection technique. The experimental validation is conducted on rapeseed and wheat parcels located in Beauce (France). The proposed methodology consists of four sequential steps: 1) preprocessing of synthetic aperture radar (SAR) and ...
arxiv   +1 more source

Mapping Crop Types of Germany by Combining Temporal Statistical Metrics of Sentinel-1 and Sentinel-2 Time Series with LPIS Data

Remote Sensing, 2022
Nationwide and consistent information on agricultural land use forms an important basis for sustainable land management maintaining food security, (agro)biodiversity, and soil fertility, especially as German agriculture has shown high vulnerability to ...
Sarah Asam, U. Gessner, Roger Almengor González, Martina Wenzl, Jennifer Kriese, C. Kuenzer   +5 more
semanticscholar   +1 more source

Multi-source remote sensing data improves the classification accuracy of natural forests and eucalyptus plantations

Revista Brasileira de Cartografia, 2020
It is challenging to map the spatial distribution of natural and planted forests based on satellite images because of the high correlation among them.
Gustavo Fluminense Carneiro, Matheus Pinheiro Ferreira, Carlos Frederico de Sá Volotão   +2 more
doaj   +1 more source

Sentinel-1 Mission Status

Procedia Computer Science, 2016
AbstractAs part of the European Copernicus programme, the Sentinel-1 mission, based on a constellation of two SAR satellites, ensures continuity for Europe of C-band SAR observations. Sentinel-1A and Sentinel-1B were respectively launched from Kourou on 3rd April 2014 and 25th April 2016.Full Operations Capacity (FOC) of the mission is expected to be ...
Nuno Miranda, Betlem Rosich, Pierre Potin, Patrick Grimont   +3 more
openaire   +2 more sources

Yield estimation of summer maize based on multi‐source remote‐sensing data

Agronomy Journal, Volume 114, Issue 6, Page 3389-3406, November/December 2022., 2022
Abstract Accurately estimating regional‐scale crop yields is substantial in determining current agricultural production performance and effective agricultural land management. The Yuncheng Basin is an important grain‐producing area in the Shanxi Province. This paper used Sentinel 2A with a spatial resolution of 10 m and MODIS with a temporal resolution
Jingshu Wang, Peng He, Zhengchu Liu, Yaodong Jing, Rutian Bi   +4 more
wiley   +1 more source

Large‐Scale Interseismic Strain Mapping of the NE Tibetan Plateau From Sentinel‐1 Interferometry

Journal of Geophysical Research: Solid Earth, 2022
The launches of the Sentinel‐1 synthetic aperture radar satellites in 2014 and 2016 started a new era of high‐resolution velocity and strain rate mapping for the continents.
Q. Ou, S. Daout, J. Weiss, L. Shen, M. Lazecký, T. Wright, B. Parsons   +6 more
semanticscholar   +1 more source

Mapping of bamboo forest bright and shadow areas using optical and SAR satellite data in Google Earth Engine

Geocarto International, 2023
Bamboo groves predominantly thrive in tropical or subtropical regions. Assessing the efficacy of remote sensing data of various types in extracting bamboo forest information from bright and shadow areas is a critical issue for achieving precise ...
Songyang Xiang, Zhanghua Xu, Wanling Shen, Lingyan Chen, Zhenbang Hao, Lin Wang, Zhicai Liu, Zenglu Li, Xiaoyu Guo, Huafeng Zhang   +9 more
doaj   +1 more source