Results 81 to 90 of about 2,086,551 (203)

Micro-motion Recognition of Spatial Cone Target Based on ISAR Image Sequences

Journal of Aerospace Technology and Management, 2016
The accurate micro-motions recognition of spatial cone target is the foundation of the characteristic parameter acquisition. For this reason, a micro-motion recognition method based on the distinguishing characteristics extracted from the Inverse ...
Changyong Shu, Fengli Xue, Shengjun Zhang, Peiling Huang, Jinzu Ji   +4 more
doaj   +3 more sources

Detection of Interannual and Fine‐Scale Plate Coupling Variations Using Intraplate Earthquakes and Geodetic Data: Application to the Tohoku‐Oki Plate Boundary

Journal of Geophysical Research: Solid Earth, Volume 131, Issue 9, September 2026.
Abstract We propose a method to infer detailed spatiotemporal variations in interplate coupling by integrating geodetic and seismic data. It examines whether focal mechanisms of intraplate earthquakes occurring near the plate interface align with the stressing rates caused by a geodetically derived slip‐deficit rate model, evaluating deviations from a ...
Kazutoshi Imanishi, Akemi Noda
wiley   +1 more source

Multiview Three-Dimensional Interferometric Inverse Synthetic Aperture Radar

IEEE Transactions on Aerospace and Electronic Systems, 2019
Three-dimensional (3D) inverse synthetic aperture radar (ISAR) imaging has been proven feasible by combining traditional ISAR imaging and interferometry. Such technique, namely Inteferometric ISAR (InISAR), allows for the main target scattering centers to be mapped into a 3-D spatial domain, therefore forming 3-D images under the form of 3-D point ...
Federica Salvetti, Marco Martorella, Elisa Giusti, Daniele Staglianò   +3 more
openaire   +3 more sources

Advanced Bistatic and Multistatic SAR Concepts and Applications [PDF]

, 2006
Tutorial on Bistatic and Multistatic Synthetic Aperture Radar from EUSAR 2006 ...
Krieger, Gerhard
core  

Characterization of the Plumbing System Beneath Askja Caldera, Iceland, Revealed by Microgravity and Deformation Data During Uplift Between 2022 and 2023

Journal of Geophysical Research: Solid Earth, Volume 131, Issue 9, September 2026.
Abstract In July 2021, an episode of uplift started at Askja caldera, Iceland, following over 50 years of subsidence. The initial inflation rate was approximately 700mm/yr $700\hspace*{.5em}\mathrm{m}\mathrm{m}/\mathrm{y}\mathrm{r}$, declining to 350mm/yr $350\hspace*{.5em}\mathrm{m}\mathrm{m}/\mathrm{y}\mathrm{r}$ within 1 month.
Josefa Sepúlveda‐Araya, Andrew Hooper, Elske van Dalfsen, Susanna K. Ebmeier, Michelle Parks, Freysteinn Sigmundsson, Yilin Yang, Milan Lazecký, Mathijs Koymans, Chiara Lanzi, Pedro Espín‐Bedón   +10 more
wiley   +1 more source

OAM-radar imaging: A review

Defence Technology
Due to the spiral phase wavefront of vortex electromagnetic waves (VEMW), there will exist the orbital angular momentum (OAM) in the VEMW, which supplies additional spatial dimensional for the information process.
Rui Li, Liulin Li, Hongping Zhou, Zhongyi Guo   +3 more
doaj   +1 more source

Acoustic Detection of Underwater Air Bubbles Generated by Breaking Waves in an Antarctic Polynya

Journal of Geophysical Research: Oceans, Volume 131, Issue 9, September 2026.
Abstract The Southern Ocean is a significant sink for anthropogenic CO2 in the atmosphere. The pelagic regions north of sea ice areas primarily absorb atmospheric CO2 via biological productivity and air‐sea gas exchange. The latter is enhanced by the bubbles generated by breaking waves.
Masato Ito, Takeshi Tamura, Daisuke Hirano, Kay I. Ohshima, Yoshiyuki Nakano, Shigeru Aoki   +5 more
wiley   +1 more source

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

Assimilation of Atmospheric CO2 Concentration in the ORCHIDEE Land Surface Model: Exploring the Added Value of Explicit Forest Regrowth Representation

Journal of Advances in Modeling Earth Systems, Volume 18, Issue 9, September 2026.
Abstract The land absorbs a large proportion of human‐induced carbon emissions, yet the spatial distribution of this carbon sink remains uncertain. Land surface models (LSMs) and atmospheric inversions often diverge on the spatial distribution of carbon sink, with models generally underestimating the northern land sink (above 30°N).
Simon Beylat, Philippe Peylin, Nina Raoult, Michael O’Sullivan, Antoine Berchet, Frederic Chevallier, Peter J. Rayner   +6 more
wiley   +1 more source

High-Resolution Inverse Synthetic Aperture Radar Imaging and Scaling With Sparse Aperture

IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing, 2015
In high-resolution radar imaging, the rotational motion of targets generally produces migration through resolution cells (MTRC) in inverse synthetic aperture radar (ISAR) images. Usually, it is a challenge to realize accurate MTRC correction on sparse aperture (SA) data, which tends to degrade the performance of translational motion compensation and SA-
Gang Xu 0002, Mengdao Xing, Xiang-Gen Xia 0001, Qian-Qian Chen 0004, Lei Zhang 0019, Zheng Bao 0001   +5 more
openaire   +2 more sources