Results 81 to 90 of about 15,887 (242)

High-resolution Wide-swath SAR Moving Target Imaging Technology Based on Distributed Compressed Sensing

Leida xuebao, 2020
High-resolution wide-swath SAR moving target imaging is of great significance for target tracking. To achieve target tracking, conversional space-based multichannel SAR technology requires a large number of channels.
PAN Jie, WANG Shuai, LI Daojing, LU Xiaochun   +3 more
doaj   +1 more source

Diet of bird‐like troodontid dinosaurs: synthesis of a contentious clade

Biological Reviews, EarlyView.
ABSTRACT Troodontidae is a clade of small‐to medium‐sized maniraptoran theropods that mainly lived in Laurasia (modern Asia, North America and Europe) during the Jurassic and Cretaceous periods and are believed to have had a variety of diets. The uniqueness of troodontid teeth suggests that they diverged from the typical flesh‐based diet of non‐avian ...
Yui Chi Fan, Case Vincent Miller, Michael Pittman   +2 more
wiley   +1 more source

CR-DEQ-SAR: A Deep Equilibrium Sparse SAR Imaging Method for Compound Regularization

IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing
Synthetic aperture radar (SAR) is a microwave remote sensing technology offering all-weather, high-resolution imaging. The rising demand for high precision and real-time processing under complex conditions in resource-constrained environments has spurred
Guoru Zhou, Yixin Zuo, Zhe Zhang, Bingchen Zhang, Yirong Wu   +4 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

Sparse representation-based SAR imaging

, 2010
There is increasing interest in using synthetic aperture radar (SAR) images in automated target recognition and decision-making tasks. The success of such tasks depends on how well the reconstructed SAR images exhibit certain features of the underlying scene.
Samadi, Sadegh, Çetin, Müjdat, Masnadi-Shirazi, Mohammad Ali   +2 more
openaire   +1 more source

Recent advances in multifunctional soft robots: A materials–structures–systems co‐design perspective for synergistic integration

FlexMat, EarlyView.
Abstract Soft robots, engineered from highly compliant materials, offer superior adaptability and safety in unstructured environments compared to their rigid counterparts. Recent advancements, fueled by bio‐inspiration and material programmability, have led to the rapid co‐evolution of their core modules: actuation, sensing, protection, energy, and ...
Qiulei Liu, Zicao Peng, Chong Sun, Haitao Yang   +3 more
wiley   +1 more source

Review of millimeter‐wave and terahertz near‐field synthetic aperture radar imaging technology

InfoScience, EarlyView.
Abstract This paper comprehensively reviews the development of millimeter‐wave (MMW) and terahertz (THz) near‐field imaging technologies, with an emphasis on the state of synthetic aperture radar (SAR)‐based imaging technologies. Near‐field imaging technologies are categorized into passive and active imaging modes, among which active imaging is favored
Qi Yang, Hongqiang Wang, Xu Chen, Xin Peng   +3 more
wiley   +1 more source

Parallel Sparse Spectral Clustering for SAR Image Segmentation

IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing, 2013
A novel parallel spectral clustering approach is proposed by exploiting the distributed computing in MATLAB for SAR image segmentation quickly and accurately. For large-scale data applications, most existing spectral clustering algorithms suffer from the bottleneck problems of high computational complexity and large memory use.
Shuiping Gou, Xiong Zhuang, Huming Zhu, Tiantian Yu   +3 more
openaire   +1 more source

Unique Features of Nasal Airway and Airflow Improvement Post‐Dupilumab: A Computational Cohort Study

The Laryngoscope, EarlyView.
The impact of dupilumab on nasal airway patency and airflow is not uniform. It is more pronounced in the middle and superior, but not inferior meatus. These unique regional changes significantly correlate with and potentially drive the improvement in patient symptoms.
Ahmad Odeh, Zhenxing Wu, Nidhi Jha, Aspen R. Schneller, James Mihalich, Zachary T. Root, Christopher Brooks, Casey Curtis, Monica Kraft, Kara Wada, Bradley A. Otto, Kathleen M. Kelly, Kai Zhao   +12 more
wiley   +1 more source

Hyper-ISTA-GHD: An Adaptive Hyperparameter Selection Framework for Highly Squinted Mode Sparse SAR Imaging

Remote Sensing
The highly squinted mode, as an operational configuration of synthetic aperture radar (SAR), fulfills specific remote sensing demands. Under equivalent conditions, it necessitates a higher pulse repetition frequency (PRF) than the side-looking mode but ...
Tiancheng Chen, Bailing Ding, Heli Gao, Lei Liu, Bingchen Zhang, Yirong Wu   +5 more
doaj   +1 more source