Results 41 to 50 of about 1,404,977 (295)

Microwave phased array for aerological radar [PDF]

ITM Web of Conferences, 2019
The use of radars with phased antenna arrays in aerological atmospheric sounding systems significantly increases the technical characteristics of the radio channel, ensures reliable auto-tracking in the near zone at high angular velocities of the ...
Shabunin Sergey, Plokhov Sergey, Bukrin Ilia, Chechetkin Victor   +3 more
doaj   +1 more source

Bone‐Inspired Recyclable Composites for Damage‐Tolerant Circular Materials

Advanced Functional Materials, EarlyView.
Bone‐inspired architected composites are developed by combining osteon‐like reinforcements with a recyclable Elium thermoplastic matrix. The hierarchical architecture redirects cracks and promotes energy dissipation, while enabling recovery of intact, aligned, load‐bearing reinforcement units that retain their original stiffness, revealing a route ...
Alessandro Stagni, Nastaran Bahrami Novin, Luigi Benvenuto, Enrico Lertora, Flavia Libonati   +4 more
wiley   +1 more source

Calibration of Phased-Array High-Frequency Radar on an Anchored Floating Platform

Remote Sensing, 2022
Prior studies have highlighted the importance of calibrating receiver antennas in target direction-of-arrival (DOA) estimation and surface current measurement for high-frequency (HF) radar systems.
Bin Wan, Xiongbin Wu, Xianchang Yue, Lan Zhang, Li Wang   +4 more
doaj   +1 more source

Neuromorphic Electronics for Intelligence Everywhere: Emerging Devices, Flexible Platforms, and Scalable System Architectures

Advanced Materials, EarlyView.
The perspective presents an integrated view of neuromorphic technologies, from device physics to real‐time applicability, while highlighting the necessity of full‐stack co‐optimization. By outlining practical hardware‐level strategies to exploit device behavior and mitigate non‐idealities, it shows pathways for building efficient, scalable, and ...
Kapil Bhardwaj, Roshni Satheesh Babu, Yuxin Xia, Eva Bestelink, Radu Sporea, Nikos Hastas, Ioannis Zeimpekis, Dimitra G. Georgiadou, Sayani Majumdar   +8 more
wiley   +1 more source

Overlapped Phased Array Antenna for Avalanche Radar [PDF]

IEEE Transactions on Antennas and Propagation, 2017
Snow avalanche is a natural phenomenon, which annually causes infrastructure damage and leads to human casualties in many countries all over the world. As a result, a detailed hazard mapping is required to be able to understand the avalanche risk levels. Also, the scarcity of the areas suitable for constructing infrastructures in the mountains places a
Mandana Ardeshir Tanha, Paul V. Brennan, Matthew Ash, Anselm Kohler, Jim McElwaine   +4 more
openaire   +4 more sources

A Multi-Source Radar Data Complementary Enhancement Generation Method Based on Diffusion Model

Remote Sensing
Multi-source radar data fusion has become increasingly vital for advancing weather monitoring and forecasting. However, effectively integrating Doppler radar with an X-band phased-array radar remains challenging.
Yuan Peng, Xiongbo Zheng, Zhilong Shang, Kaiqi He, Zhiyong Cheng   +4 more
doaj   +1 more source

General space-time clutter model for multi-channel airborne radar

The Journal of Engineering, 2019
Ground clutter of looking-down airborne radar is spread in Doppler because of the platform motion, and thus the interested moving targets may be masked by the ground clutter.
Li Xinzhe, Xie Wenchong, Wang Yongliang, Ma Jie   +3 more
doaj   +1 more source

Additional degree of freedom in phased‐MIMO radar signal design using space‐time codes

ETRI Journal, 2021
In this paper, an additional degree of freedom in phased multi‐input multi‐output (phased‐MIMO) radar with any arbitrary desired covariance matrix is proposed using space‐time codes. By using the proposed method, any desired transmit covariance matrix in
Roholah Vahdani, Hossein Khaleghi Bizaki, Mohsen Fallah Joshaghani   +2 more
doaj   +1 more source

Simulated annealing whale radar resource scheduling algorithm based on Cauchy mutation

Xibei Gongye Daxue Xuebao, 2022
In order to improve the effectiveness of radar resource scheduling, a Cauchy mutation simulated annealing whale radar resource scheduling algorithm is proposed in this study. The algorithm integrates the time resources, computing resources and the number
HU Bin, ZHU Yahui, ZHOU Yannian
doaj   +1 more source

Breaking the Surface: Buoyant Metal–Polymer Open–Cell Hybrid Lattice Metamaterials

Advanced Materials, EarlyView.
Open‐cell metal–polymer lattice metamaterials that defy sinking. (a) Injection process of the polyurethane (PU) foam into the titanium (Ti‐6Al‐4V) hollow‐strut lattice creating the open‐cell Ti‐6Al‐4V+PU hybrid lattice, (b) flotation test of a hybrid lattice specimen, and (c) a digital representation and experimental validation of a marine buoy ...
Jordan Noronha, Joey Tallon, Raad Omar, Jason Dash, Andrey Molotnikov, Martin Leary, Milan Brandt, Ma Qian   +7 more
wiley   +1 more source