Results 71 to 80 of about 199,781 (299)

Anti-jamming of Inverse Synthetic Aperture Radar based on Slope-varying Linear Frequency Modulation Signal [PDF]

, 2009
Deceptive jamming technology against inverse synthetic aperture radar is matured now, which is meaningful in military application. But the research on anti-jamming technology for inverse synthetic aperture radar (ISAR) is still not a mature technology ...
Hongqiang, Wang, Liang, Wu, Xiang, Li, Yupeng, Zhu   +3 more
core   +2 more sources

Monitoring of a multi‐span prestressed concrete bridge using satellite interferometric data and comparison with on‐site sensor results

Structural Concrete, EarlyView.
Abstract Satellite‐based Synthetic Aperture Radar Interferometry (InSAR) represents a promising supplement to traditional Structural Health Monitoring (SHM) methods, offering a non‐invasive solution that eliminates the need for sensor installations and provides extensive spatial coverage.
Pier Francesco Giordano, Maciej Kwapisz, Andrea Miano, Riccardo Liuzzo, Alois Vorwagner, Maria Pina Limongelli, Andrea Prota, Marian Ralbovsky   +7 more
wiley   +1 more source

Radar Fields: An Extension of Radiance Fields to SAR [PDF]

arXiv, 2023
Radiance fields have been a major breakthrough in the field of inverse rendering, novel view synthesis and 3D modeling of complex scenes from multi-view image collections. Since their introduction, it was shown that they could be extended to other modalities such as LiDAR, radio frequencies, X-ray or ultrasound. In this paper, we show that, despite the
arxiv  

AutoSAFT: Autofocusing for extended depth of imaging in scanning acoustic microscopy

Journal of Microscopy, Volume 298, Issue 3, Page 283-292, June 2025.
Abstract In the scanning acoustic microscopy (SAM) imaging, it is essential to address the diminished lateral resolution in the out‐of‐focus region, as image quality correlates with the ultrasound propagation distance either above or below the focal plane.
M Sarim Ameed Khan, Shivam Ojha, Shubham Kumar Gupta, Amit Shelke, Azeem Ahmad, Frank Melandsø, Anowarul Habib   +6 more
wiley   +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

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, Casado Blanco, David, Fernández Usón, Marc, Martin Fuster, Roger   +3 more
core   +2 more sources

Graph Based Imaging for Synthetic Aperture Radar [PDF]

, 2018
In this paper, we propose graph signal processing based imaging for synthetic aperture radar. We present a modified version of fused least absolute shrinkage and selection operator to cater for graph structure of the radar image. We solve the cost function via alternating direction method of multipliers.
arxiv   +1 more source

Expanding sparse point deflection measurements to spatially continuous data via optical fiber sensors in long‐span suspension bridges

Computer-Aided Civil and Infrastructure Engineering, EarlyView.
Abstract In structural health monitoring, only the deflection of key sections of the bridge can be monitored; the spatial continuous deflection of the main girder cannot be identified. To solve this problem, a method for expanding sparse point deflection measurements to spatially continuous data via optical fiber sensors in long‐span suspension bridges
Qianen Xu, Xinteng Ma, Yang Liu
wiley   +1 more source

A reweighted matrix completion algorithm for sparse inverse synthetic aperture radar imaging

IET Radar, Sonar & Navigation, 2023
Sparse inverse synthetic aperture radar (ISAR) imaging can be generally achieved by compressed sensing (CS) methods because sparse sampling disables the approach of conventional range Doppler. However, the CS‐based methods have to convert the matrix into
Mingjiu Lv, Wenfeng Chen, Jianchao Ma, Jun Yang, Xiaoyan Ma, Qi Cheng   +5 more
doaj   +1 more source

Interferometric Passive Radar Imaging with Deep Denoising Priors [PDF]

arXiv, 2022
Passive radar has key advantages over its active counterpart in terms of cost and stealth. In this paper, we address passive radar imaging problem by interferometric inversion using a spectral estimation method with a priori information within a deep learning (DL) framework.
arxiv