Results 61 to 70 of about 199,781 (299)

Near-Field MIMO-ISAR Millimeter-Wave Imaging [PDF]

, 2023
Multiple-input-multiple-output (MIMO) millimeter-wave (mmWave) sensors for synthetic aperture radar (SAR) and inverse SAR (ISAR) address the fundamental challenges of cost-effectiveness and scalability inherent to near-field imaging. In this paper, near-field MIMO-ISAR mmWave imaging systems are discussed and developed.
arxiv   +1 more source

Ship Wake Detection in SAR Images via Sparse Regularization [PDF]

, 2019
In order to analyse synthetic aperture radar (SAR) images of the sea surface, ship wake detection is essential for extracting information on the wake generating vessels.
Achim, Alin, Karakuş, Oktay, Rizaev, Igor   +2 more
core   +4 more sources

A bistatic inverse synthetic aperture radar sparse aperture high‐resolution imaging algorithm with migration compensation

IET Radar, Sonar & Navigation, 2022
In recent years, bistatic inverse synthetic aperture radar (Bi‐ISAR) imaging of targets with sparse aperture has attracted more and more attention. One of the critical issues is that the Bi‐ISAR imaging of some large targets with rotational motions is ...
Hanshen Zhu, Wenhua Hu, Baofeng Guo, Xiaoxiu Zhu, Bin Zhou, Dongfang Xue, Chang'an Zhu   +6 more
doaj   +1 more source

Deep Denoising Prior-Based Spectral Estimation for Phaseless Synthetic Aperture Radar [PDF]

arXiv, 2023
Incoherent processing for synthetic aperture radar (SAR) is a promising approach that enables low implementation costs, simplified hardware designs and operations in high frequency spectrum compared to the conventional imaging methods using coherent processing.
arxiv  

Accelerated translational motion compensation with contrast maximisation optimisation algorithm for inverse synthetic aperture radar imaging

IET radar, sonar & navigation, 2019
Range alignment of traditional translational motion compensation for inverse synthetic aperture radar imaging generally cannot be implemented accurately under low signal-to-noise ratio, resulting in the following phase adjustment invalid.
Shuai Shao, Lei Zhang, Hongwei Liu, Zhou Yejian   +3 more
semanticscholar   +1 more source

SA-ISAR imaging algorithm based on the gradient signal recovery method

The Journal of Engineering, 2019
As the radar system tends to be complex, obtaining well-focused images with discontinued apertures becomes a challenge. Here, a new sparse aperture inverse synthetic aperture radar (SA-ISAR) imaging approach through the signal recovery method is proposed.
Bingren Ji, Bin Zhao, Yong Wang, Rongqing Xu   +3 more
doaj   +1 more source

3D inverse synthetic aperture radar image quality improvement using sparse signal representation

IET Radar, Sonar & Navigation, 2023
Generalisation of one‐dimensional dictionary learning (1DDL) algorithms to Multidimensional (MD) mode and its utilisation in MD data applications, increases the speed and reduces the computational complexity.
Ali Mehrpooya, Seyed Mohammad Karbasi, Milad Nazari, Zahra Abbasi, Mohammad Mahdi Nayebi   +4 more
doaj   +1 more source

Few‐shot learning for satellite characterisation from synthetic inverse synthetic aperture radar images

IET Radar, Sonar & Navigation
Space situational awareness systems primarily focus on detecting and tracking space objects, providing crucial positional data. However, understanding the complex space domain requires characterising satellites, often involving estimation of bus and ...
Friso G. Heslinga, Faruk Uysal, Sabina B. vanRooij, Sven Berberich, Miguel Caro Cuenca   +4 more
doaj   +1 more source

Illuminating the Arctic: Unveiling seabird responses to artificial light during polar darkness through citizen science and remote sensing

Remote Sensing in Ecology and Conservation, EarlyView.
Artificial light at night (ALAN) has global impacts on animals, yet its effects in polar regions remain underexplored. In this study, we analyzed a decade of citizen science data on seabird occurrences in Longyearbyen, using remote sensing data to assess the impact of ALAN during the polar night.
Kaja Balazy, Dariusz Jakubas, Andrzej Kotarba, Katarzyna Wojczulanis‐Jakubas   +3 more
wiley   +1 more source

Experimental Results of High-Resolution ISAR Imaging of Ground-Moving Vehicles with a Stationary FMCW Rada [PDF]

, 2015
In the paper experimental results of ISAR (Inverse Synthetic Aperture Radar) processing obtained with highresolution radar are presented. Targets under observation were ground moving vehicles, such as cars, trucks and tractors.
Gromek, Artur, Gromek, Damian, Kulpa, Janusz S., Kulpa, Krzysztof, Malanowski, Mateusz, Samczyński, Piotr   +5 more
core   +1 more source