Results 71 to 80 of about 2,458,810 (174)

Refocusing Moving Ship Targets in SAR Images Based on Fast Minimum Entropy Phase Compensation

Sensors, 2019
Moving ship targets appear blurred and defocused in synthetic aperture radar (SAR) images due to the translation motion during the coherent processing. Motion compensation is required for refocusing moving ship targets in SAR scenes.
Xiangli Huang, Kefeng Ji, Xiangguang Leng, Ganggang Dong, Xiangwei Xing   +4 more
doaj   +1 more source

Using synthetic models to understand the detecting ability of ground‐penetrating radar for water‐conducting structures in the bedrock of formerly glaciated site

Near Surface Geophysics, Volume 24, Issue 5, Page 669-692, October 2026.
Abstract Utilizing synthetic models for the interpretation of ground‐penetrating radar (GPR) profiles can aid in the detection of hydrogeological structures by identifying their signatures. In this study, finite difference (FD) forward modelling was used to understand the detection ability of 50 MHz GPR for (1) the quaternary deposit–bedrock contact ...
Annika Katarina Åberg, Salla Eeva, Emilia Koivisto, Susanne Charlotta Åberg, Seija Kultti, Kirsti Korkka‐Niemi   +5 more
wiley   +1 more source

A Regional Intercomparison of Ice Sheet Mass Balance Estimates of the Northwest Greenland Ice Sheet

Journal of Geophysical Research: Earth Surface, Volume 131, Issue 10, October 2026.
Abstract Changes in ice sheet mass manifest as changes in ice flow, ice thickness, and gravitational attraction. These parameters can be measured from space and used to track Greenland's contribution to sea level rise independently from each other. While an excellent level of agreement between these satellite techniques has been demonstrated at the ice
Inès N. Otosaka, Andrew Shepherd, Andreas Groh, Thorben Döhne, Xavier Fettweis, Brice Noël   +5 more
wiley   +1 more source

A Novel Strategy for Radar Imaging Based on Compressive Sensing [PDF]

, 2010
Radar data have already proven to be compressible with no significant losses for most of the applications in which it is used. In the framework of information theory, the compressibility of a signal implies that it can be decomposed onto a reduced set of
López-Dekker, Paco, Mallorquí Franquet, Jordi Joan, Paco Lopez-Dekker, Tello Alonso, Marivi, Mallorquí, Jordi J., Jordi J Mallorqui, López Dekker, Francisco J., Marivi Tello Alonso, Tello Alonso, Mª Victoria   +8 more
core   +1 more source

High-Resolution ISAR Imaging With Sparse Aperture VFM Waveforms Under Low SNR Condition

IEEE Access, 2019
In recent years, the compressed sensing theory has been widely used in sparse aperture radar imaging. The inverse synthetic aperture radar (ISAR) imaging based on the sparse aperture echo of V-style frequency modulation (V-FM) waveform, which can ...
Jiyuan Chen, Letao Xu, Xiaoyi Pan, Pu Zheng, Shunping Xiao   +4 more
doaj   +1 more source

High‐Resolution Body‐Wave Tomography of Kı̄lauea's Summit Magma Storage System From a Dense Passive and Active Source Experiment

Journal of Geophysical Research: Solid Earth, Volume 131, Issue 10, October 2026.
Abstract Imaging magma storage beneath active calderas requires resolving crustal structure at scales comparable to those of individual reservoirs. To identify potential reservoirs beneath Kı̄lauea, Hawai'i, we conducted a hybrid seismic experiment at its summit for 37 days in 2023 that combined more than 1,800 three‐component nodal seismometers with ...
Guoqing Lin, Steven Roecker, Roger Denlinger, Dan O’Connell, Ninfa Bennington, Elizabeth Vinarski, Ashton Flinders, Matthew M. Haney   +7 more
wiley   +1 more source

Tracking Slow‐Moving Landslide Responses to the 2023 Kahramanmaraş Earthquake With InSAR

Journal of Geophysical Research: Earth Surface, Volume 131, Issue 10, October 2026.
Abstract Strong earthquakes can have a dual impact on the slow‐moving landslide budget of a landscape by either triggering new actively deforming hillslopes or stabilizing existing ones. However, their regional‐scale influence on hillslope processes remains poorly understood because of limited observational coverage and the masking effects of long ...
Ashok Dahal, Hakan Tanyaş, Alexander L. Handwerger, Luigi Lombardo, Eric J. Fielding   +4 more
wiley   +1 more source

Fast GMTI Algorithm For Traffic Monitoring Based On A Priori Knowledge [PDF]

, 2012
In this paper a fast a priori knowledge-based ground moving target indication and parameter estimation algorithm applicable to single- as well as to multi-channel synthetic aperture airborne radar data is presented.
Baumgartner, Stefan Valentin, Krieger, Gerhard   +1 more
core   +1 more source

GLRT‐based detection of targets composed of distributed scattering centres

IET Radar, Sonar & Navigation
Attributed scattering problems have been found to be helpful in inverse synthetic aperture radar (ISAR) imaging and target recognition problems. In this model, the scattering centres are divided into two categories: localised and distributed.
Amir Mohammad Hatami, Seyyed Mohammad Karbasi, Mohammad Mahdi Nayebi   +2 more
doaj   +1 more source

Temporal stability of soil moisture and radar backscatter observed by the advanced Synthetic Aperture Radar (ASAR) [PDF]

, 2008
The high spatio-temporal variability of soil moisture is the result of atmospheric forcing and redistribution processes related to terrain, soil, and vegetation characteristics.
Annett Bartsch, Doubkova, Marcela, Bartsch, Annett, Pathe, Carsten, Scipal, K., Klaus Scipal, Günter Blöschl, Bloschl, G., Martinez-Fernandez, J., Pathe, C., Wolfgang Wagner, Alexander Löw, Scipal, Klaus, Hasenauer, Stefan, Doubkova, M., Bloschl, Guenter, Bartsch, A., José Martínez-Fernández, Sabel, Daniel, Löw, Alexander, Stefan Hasenauer, Loew, A., Daniel Sabel, Marcela Doubkova, Hasenauer, S., Wagner, W., Carsten Pathe, Martinez-Fernandez, Jose, José Martínez-Fernández, Wagner, Wolfgang, Günter Blöschl, Sabel, D., Alexander Löw   +32 more
core   +1 more source