Results 41 to 50 of about 268,571 (299)

Evidence-Theoretic Reentry Target Classification Using Radar: A Fuzzy Logic Approach

IEEE Access, 2021
This study focuses on the reentry target classification and fuses target features based on the generalized evidence theory. The features are extensively investigated, and the ballistic factor and length of the high-resolution range profile are selected ...
Kwangyong Jung, Sawon Min, Jeongwoo Kim, Nammoon Kim, Euntai Kim   +4 more
doaj   +1 more source

Active Thermal Field Integration for Marangoni‐Driven Salt Rejection and Water Collection

Advanced Functional Materials, EarlyView.
A thermal gradient fabric (TGF) evaporator with an auxiliary active thermal field can simultaneously increase evaporation rates and achieve long‐term salt rejection. The auxiliary active thermal field is well integrated with solar energy to construct moderate, extensive, and circulating Marangoni flow for salt rejection.
Can Ge, Shuai Guo, Wei Li, Xunlong Zhang, Bin Chen, Xiao Feng, Shichang Yang, Duo Xu, Zhen Yu, Sai Kishore Ravi, Weilin Xu, Jian Fang, Swee Ching Tan   +12 more
wiley   +1 more source

Rapid Diagnostics of Reconfigurable Intelligent Surfaces Using Space‐Time‐Coding Modulation

Advanced Functional Materials, EarlyView.
A fast reconfigurable‐intelligent‐surface (RIS) diagnostics method is proposed based on spatio‐temporal modulation with orthogonal codes. Theoretical analysis demonstrates a clear distinction in code channel power between normal and faulty elements. Simulations validate its feasibility under high fault ratios and varying receiving angles.
Yi Ning Zheng, Lei Zhang, Xiao Qing Chen, Marco Rossi, Giuseppe Castaldi, Shuo Liu, Tie Jun Cui, Vincenzo Galdi   +7 more
wiley   +1 more source

Radar imaging

Inverse Problems, 2013
The article of record as published may be found at http://dx.doi.org/1088/0266-5611/29/5/050301 Because of their ability to operate without regard to day, night or weather conditions, radar systems are ubiquitous in remote sensing operations and are used in a wide variety of commercial and military applications.
Borden, Brett, Cheney, Margaret
openaire   +2 more sources

A Robust Dual‐mode Self‐Monitoring Battery Thermal Management System via Bilayer Structural Design

Advanced Functional Materials, EarlyView.
An adaptive dual‐mode material capable of both evaporative cooling and photothermal preheating is developed. It achieves a cooling efficiency of 53.9%, surpassing existing evaporative cooling counterparts, and a self‐monitoring capability, making it ideal for electric vehicles, portable electronics, and grid‐scale energy storage.
Shanchi Wang, Zhihao Huang, Zhiguang Xu, Fang Guo, Tao Zhang, Min Hong, Pingan Song, Yan Zhao   +7 more
wiley   +1 more source

Quasi‐Periodic Surface Functionalization by Ultra‐Short Pulsed Laser Processing: Unlocking Superior Heat Transfer in Vapor Chambers

Advanced Functional Materials, EarlyView.
Ultra‐short pulsed laser processing (ULSP) enables scalable, open‐air fabrication of self‐organized, quasi‐periodic micro/nanostructures on copper using 100 µm laser beams, orders of magnitude larger than the resulting surface features. Integrated into ultra‐thin, wick‐free vapor chambers, these laser‐functionalized surfaces dramatically enhance ...
Anish Pal, Arani Mukhopadhyay, Graham Kaufman, Suchit Sarin, Jeffrey E. Shield, George Gogos, Craig Zuhlke, Constantine M. Megaridis   +7 more
wiley   +1 more source

Investigation on Multimode SAR Imaging Based on Digital Array Radar

Leida xuebao, 2014
Digital Array Radar (DAR) has the ability of simultaneous multimode imaging and has many potential applications. This paper firstly introduces the basic hardware structure and the operation principle of DAR.
Li Xue-shi, Sun Guang-cai, Shao Peng, Wu Yu-feng, Xing Meng-dao   +4 more
doaj   +1 more source

The Global Water Body Layer from TanDEM-X Interferometric SAR Data

Remote Sensing, 2021
The interferometric synthetic aperture radar (InSAR) data set, acquired by the TanDEM-X (TerraSAR-X add-on for Digital Elevation Measurement) mission (TDM), represents a unique data source to derive geo-information products at a global scale.
Jose-Luis Bueso-Bello, Michele Martone, Carolina González, Francescopaolo Sica, Paolo Valdo, Philipp Posovszky, Andrea Pulella, Paola Rizzoli   +7 more
doaj   +1 more source

Exploiting the Functionality of Cerium Oxide‐Modified Carbon Nanohorns Catalysts Toward Enhanced CO2 Reduction Performance

Advanced Functional Materials, EarlyView.
A cerium oxide‐carbon nanohybrid catalyst is synthesized via two distinct routes and is integrated into H‐type cells and gas diffusion layers (GDLs) to enhance electrochemical performance. Structural variations significantly affect performance, with the solvothermal sample exhibiting higher current densities.
Alessia Pollice, Michele Cacioppo, Miriam Marchi, Miriam Moro, Francesco Paolucci, Marcella Bonchio, Maurizio Prato, Giovanni Valenti, Michele Melchionna, Paolo Fornasiero   +9 more
wiley   +1 more source

A study on parameter estimation and suppression for smeared spectrum jamming based on short-time Fourier transform

EURASIP Journal on Wireless Communications and Networking, 2020
We address the suppressing problem of smeared spectrum (SMSP) jamming from the mixed signal received by the radar. To this end, we resort to the time-frequency analysis algorithm and give the concrete expression formula of the short-time Fourier ...
Chuanzhang Wu, Baixiao Chen, Minglei Yang, Mei Dong   +3 more
doaj   +1 more source