Results 61 to 70 of about 9,039 (172)

3D SAR Imaging Method Based on Learned Sparse Prior

Leida xuebao, 2023
The development of 3D Synthetic Aperture Radar (SAR) imaging is currently hampered by issues such as high data dimension, high system complexity, and low imaging processing efficiency.
Mou WANG, Shunjun WEI, Rong SHEN, Zichen ZHOU, Jun SHI, Xiaoling ZHANG   +5 more
doaj   +1 more source

Experimental Synthetic Aperture Radar with Dynamic Metasurfaces

, 2017
We investigate the use of a dynamic metasurface as the transmitting antenna for a synthetic aperture radar (SAR) imaging system. The dynamic metasurface consists of a one-dimensional microstrip waveguide with complementary electric resonator (cELC ...
Boyarsky, Michael, Fromenteze, Thomas, Imani, Mohammadreza F., Pulido-Mancera, Laura, Reynolds, Matthew, Sleasman, Timothy, Smith, David R.   +6 more
core   +2 more sources

Blur resolved OCT: full-range interferometric synthetic aperture microscopy through dispersion encoding [PDF]

, 2001
We present a computational method for full-range interferometric synthetic aperture microscopy (ISAM) under dispersion encoding. With this, one can effectively double the depth range of optical coherence tomography (OCT), whilst dramatically enhancing ...
A.M. Wing, F.E. Pollick, G.J.P. Savelsbergh, J.B.J. Smeets, M. Jeannerod, M. Jeannerod, N. Teasdale, T.G. Fikes   +7 more
core   +4 more sources

Assessment of SWOT for Monitoring Ice‐Marginal Lake Water Levels in Greenland

Geophysical Research Letters, Volume 53, Issue 5, 16 March 2026.
Abstract The Surface Water and Ocean Topography (SWOT) satellite mission provides a powerful data set for monitoring global surface water resources. However, its performance for monitoring ice‐marginal lakes in Greenland remains unknown. Due to the scarcity of in situ measurements, this study evaluated the reliability of ice‐marginal lake elevations ...
Xiaoyi Shen, Yubin Fan, Stephen J. Livingstone, Chang‐Qing Ke   +3 more
wiley   +1 more source

Deformation Trend Extraction Based on Multi-Temporal InSAR in Shanghai

Remote Sensing, 2013
Shanghai is a modern metropolis characterized by high urban density and anthropogenic ground motions. Although traditional deformation monitoring methods, such as GPS and spirit leveling, are reliable to millimeter accuracy, the sparse point subsidence ...
Rui Zhang, Guoxiang Liu, Junping Zou, Lina Zhang, Jicang Wu, Jie Chen, Bing Yu   +6 more
doaj   +1 more source

Quantifying river morphological changes using multi‐satellite observations and in situ measurements

Earth Surface Processes and Landforms, Volume 51, Issue 3, March 2026.
This study integrates optical, radar and altimetry satellite data with river gauge measurements to estimate periodically submerged riverbed topography and quantify morphological change. By linking how often water covers the riverbed with water‐level variations, erosion and deposition patterns are mapped across a reach of Jamuna River.
Tek Narayan Bhattarai, Antonio Moreno‐Rodenas, Sanjay Giri, Maarten Bakker, Amgad Omer, Allen Bateman   +5 more
wiley   +1 more source

Peering Inside Tropical Cyclones With the WIVERN Space‐Borne Doppler Radar

Earth and Space Science, Volume 13, Issue 3, March 2026.
Abstract The WIVERN (Wind Velocity Radar Nephoscope) mission significantly enhances the global tropical cyclone observing system. Operating from a 500 km near‐polar orbit, the 3 m diameter conically scanning antenna provides an 800 km swath. The radar operated at 94 GHz (3 mm wavelength) provides high‐resolution observations with a vertical resolution ...
Alessandro Battaglia, Francesco Manconi, Massimiliano Recupero, Cinzia Cambiotti, Marco Coppola, Antonio Parodi, Frederic Tridon, Simone Mantovani, Pavlos Kollias, David S. Nolan, Marcel Kleinherenbrink, Maryam Pourshamsi   +11 more
wiley   +1 more source

Group Sparse Representation Based Dictionary Learning for SAR Image Despeckling

IEEE Access, 2019
Since the sparse representation coefficients of synthetic aperture radar (SAR) images often appear in clusters with intrinsic structure, traditional sparse representation theory cannot capture this property.
Su Liu, Gong Zhang, Wenbo Liu
doaj   +1 more source

SAR image reconstruction by expectation maximization based matching pursuit [PDF]

, 2015
Cataloged from PDF version of article.Synthetic Aperture Radar (SAR) provides high resolution images of terrain and target reflectivity. SAR systems are indispensable in many remote sensing applications.
Arikan, O., Gurbuz, A. C., Ugur, S.
core   +1 more source

Preservation of Historically and Scientifically Important Geospatial Data From Venus

Earth and Space Science, Volume 13, Issue 3, March 2026.
Abstract A large volume of scientifically and historically important data from the early exploration of Venus is not widely available to researchers. Our work is focused on ameliorating this problem with the archival of geospatial data including radar, topography, and radiometry.
T. J. Austin, J. G. O'Rourke, D. M. Nelson   +2 more
wiley   +1 more source