Results 21 to 30 of about 13,133 (266)

PolSAR Image Classification Using a Superpixel-Based Composite Kernel and Elastic Net

open access: yesRemote Sensing, 2021
The presence of speckles and the absence of discriminative features make it difficult for the pixel-level polarimetric synthetic aperture radar (PolSAR) image classification to achieve more accurate and coherent interpretation results, especially in the ...
Yice Cao   +4 more
doaj   +1 more source

Ground Subsidence Investigation in Fuoshan, China, Based on SBAS-InSAR Technology with TerraSAR-X Images

open access: yesApplied Sciences, 2019
Highways built on soft clay subgrade are more prone to subsidence due to the geotechnical characteristics of soft clay. Monitoring ground movements in this area is significant for understanding the deformation dynamics and reducing maintenance cost as ...
Yikai Zhu   +4 more
doaj   +1 more source

MOBILE MAPPING BY FMCW SYNTHETIC APERTURE RADAR OPERATING AT 300 GHZ [PDF]

open access: yesThe International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2016
While optical cameras or laser systems are widely used for mobile mapping low attention was payed for radar systems. Due to new semiconductor technologies, compact and leight weight SAR systems based on the Frequency Modulated Continuous Wave (FMCW ...
S. Palm   +5 more
doaj   +1 more source

Multi-Channel Synthetic Aperture Radar Based Classification of Maritime Scenes

open access: yesIEEE Access, 2020
We present novel experimental evidence that demonstrates the effectiveness of exploiting scene motion information for the analysis of scene structure in maritime imaging applications. We analyze data captured by our novel airborne Multi-channel SAR (MSAR)
Robert W. Jansen   +3 more
doaj   +1 more source

Simultaneous VHF radar backscatter and ionosonde observations of low-latitude E region [PDF]

open access: yesAnnales Geophysicae, 2005
The first results of simultaneous observations made on the low-latitude field-aligned irregularities (FAI) using the MST radar located at Gadanki (13.5° N, 79.2° E, dip 12.5°) and the Es parameters using an ionosonde at a nearby station ...
A. K. Patra   +3 more
doaj   +1 more source

Ten Years of TerraSAR-X Operations

open access: yesRemote Sensing, 2018
The satellite of the TerraSAR-X mission, called TSX, was launched on 15 June 2007 and its identically constructed twin satellite TDX, which is required by the mission TanDEM-X, launched on 21 June 2010.
Stefan Buckreuss   +11 more
doaj   +1 more source

Super-Resolution Range and Velocity Estimations for SFA-OFDM Radar

open access: yesRemote Sensing, 2022
Sparse frequency agile orthogonal frequency division multiplexing (SFA-OFDM) signal brings excellent performance to electronic counter-countermeasures (ECCM) and reduces the complexity of the radar system.
Zhixing Liu   +3 more
doaj   +1 more source

An Improved Time-Series Model Considering Rheological Parameters for Surface Deformation Monitoring of Soft Clay Subgrade

open access: yesSensors, 2019
Building deformation models consistent with reality is a crucial step for time-series deformation monitoring. Most deformation models are empirical mathematical models, lacking consideration of the physical mechanisms of observed objects.
Xuemin Xing   +3 more
doaj   +1 more source

Integrating Weighted Feature Fusion and the Spatial Attention Module with Convolutional Neural Networks for Automatic Aircraft Detection from SAR Images

open access: yesRemote Sensing, 2021
The automatic detection of aircrafts from SAR images is widely applied in both military and civil fields, but there are still considerable challenges. To address the high variety of aircraft sizes and complex background information in SAR images, a new ...
Jielan Wang   +6 more
doaj   +1 more source

Sparse Multi-Channel Synthetic Aperture Radar Based Motion Induced Distortion Correction and Classification of Maritime Scenes

open access: yesIEEE Access, 2021
Multi-channel Synthetic Aperture Radar (MSAR) in the maritime environment has proven to be an effective technique for improved image fidelity and scene characterization.
Robert W. Jansen, Raghu G. Raj
doaj   +1 more source

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