Results 51 to 60 of about 195,296 (230)
Geoscience Data Journal, Volume 12, Issue 2, April 2025.ABSTRACT Landslides represent one of the most prevalent natural disasters worldwide, exerting significant adverse effects on social stability and economic development. Timely and accurate monitoring of landslide changes is crucial for disaster prevention and mitigation.
Mengxi Sun, Hui Cao, Yansong Duan
wiley +1 more source
Geoscience Data Journal, Volume 12, Issue 2, April 2025.ABSTRACT Recent decline of sea ice in the Barents Sea represents a clear manifestation of the ongoing Arctic warming. This study presents a compilation of data sets on sea ice physics acquired during 2018–2022 during Nansen Legacy—a Norwegian multidisciplinary national research programme that focused on the northern Barents Sea.
Dmitry V. Divine +9 more
wiley +1 more source
Deep Learning Methods For Synthetic Aperture Radar Image Despeckling: An Overview Of Trends And Perspectives [PDF]
, 2020 Synthetic aperture radar (SAR) images are affected by a spatially-correlated and signal-dependent noise called speckle, which is very severe and may hinder image exploitation. Despeckling is an important task that aims at removing such noise, so as to improve the accuracy of all downstream image processing tasks. The first despeckling methods date back
arxiv +1 more source
Joint space aspect reconstruction of wide-angle SAR exploiting sparsity [PDF]
, 2008 In this paper we present an algorithm for wide-angle synthetic aperture radar (SAR) image formation. Reconstruction of wide-angle SAR holds a promise of higher resolution and better information about a scene, but it also poses a number of challenges when
Cetin, Mujdat +3 more
core +1 more source
Mapping saline groundwater under rice‐paddy fields in Vietnam's Mekong Delta
Near Surface Geophysics, Volume 23, Issue 2, Page 121-133, April 2025.Abstract Climate change, decreased river flow and land subsidence lead to saltwater intrusion posing a significant threat to rice production in Vietnam's Mekong Delta (VMD), one of the world's largest rice exporting regions. Soil salinity in the VMD can be caused by saltwater intrusion into lowland areas through the canal system, or by capillary rise ...
Van Hong Nguyen +3 more
wiley +1 more source
Proposed satellite position determination systems and techniques for Geostationary Synthetic Aperture Radar [PDF]
, 2016 This paper proposes two different calibration techniques for Geostationary Synthetic Aperture Radar (GEOSAR) missions requiring a high precision positioning, based on Active Radar Calibrators and Ground Based Interferometry.
Broquetas Ibars, Antoni +3 more
core +2 more sources
Geochemistry, Geophysics, Geosystems, Volume 26, Issue 4, April 2025.Abstract The Dallol volcano on the axis of the Erta Ale ridge (Afar rift) offers an ideal opportunity to study the interaction between magmatic and hydrothermal processes. Volcanic activity in Dallol has developed in an area below sea level with a salt plain.
Birhan A. Kebede +7 more
wiley +1 more source
3D Near-Field Millimeter-Wave Synthetic Aperture Radar Imaging [PDF]
arXiv, 2020 In this paper, we present 3D high resolution radar imaging process at millimeter-Wave (mmWave) frequencies by creating the effect of a large aperture synthetically. We use a low cost fully integrated Frequency Modulated Continuous Wave (FMCW) radar operating at $\rm 79\;GHz$ and then perform Synthetic Aperture Radar (SAR) imaging in the near-filed zone.
arxiv
Multipath smearing suppression for synthetic aperture radar images of harbor scenes [PDF]
, 2019 Due to the periodic and non-periodic variations in the sea surface, smearing is caused by the multiple paths between the sea surface and man-made objects in synthetic aperture radar images of harbor areas.
Liu, M., Liu, W., Tian, X., Xiao, P.
core +1 more source
Journal of Geophysical Research: Solid Earth, Volume 130, Issue 4, April 2025.Abstract From repeat‐pass interferometry, tropospheric signals often prevent the detection of ground deformation signals. In recent years, tropospheric corrections derived from global weather‐based models have been implemented in several InSAR processing chains.
F. Albino +7 more
wiley +1 more source