Results 141 to 150 of about 5,033 (311)

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

Concept for an advanced navigational phased array radar

, 2016
A major future challenge to providers of nautical equipment and navigational radar systems is to make such systems affordable to cost-sensitive customers in the commercial maritime market.
Hansen, Nils, Jacob, Arne, Mohncke, Jan Philip, Radzijewski, Stefan, Mextorf, Henning   +4 more
core  

Phased array radar individual recognition based on phase-frequency fusion feature

Tongxin xuebao
To solve the problem of phased-array radar individual identification in the complex electromagnetic environment with wide spectrum, heterogeneous waveforms and strong energy, an unintentional modulation feature extraction method based on phase and ...
LI Baozhu, MA Lu, LI Longhui, HONG Tao, JIANG Wen   +4 more
doaj  

Fermentation characteristics of four southern sichuan citrus cultivars

JSFA reports, EarlyView.
Abstract Background Sichuan, China's leading citrus‐producing region has strong potential for citrus wine development. Citrus is rich in bioactive compounds that enhance flavor and health value, yet current citrus wines often show weak aroma and bitterness.
Zhiqing Zheng, Cong Li, Jun Zhao, Yi Ma, Jiaming Cui, Tian Zheng, Bin Guo, Tong Lin, Chun Yi, Xingyin Zhang   +9 more
wiley   +1 more source

Ku-Band Phased Array Reflector Array for Bistatic Radar Experiments

, 2008
This paper describes the design of Ku-band 16 element parabolic trough reflector antenna suitable for bistatie radar experiments using geo-stationary satellite TV signals. The array can steer electronically in azimuth and mechanically in elevation.
Hedley Hansen, Cooke, P., Peter Cooke, James Palmer, Palmer, J., Matthew Trinkle, Trinkle, M., Hansen, H.   +7 more
core   +1 more source

Non‐Uniform Programmable Photonic Waveguide Meshes

Laser &Photonics Reviews, EarlyView.
Integrating defect cells into uniform hexagonal waveguide meshes overcomes the fundamental spectral and temporal limitations of programmable photonics. By leveraging the Vernier effect through non‐uniform coupled cavities, this architecture achieves a tenfold increase in free spectral range and ultra‐fast sampling times, paving the way for next ...
Cristina Catalá‐Lahoz, José Capmany
wiley   +1 more source

Three‐Dimensional Optical Characterization of Magnetostrictive Deformation in Magnomechanical Systems

Laser &Photonics Reviews, EarlyView.
An optical approach is proposed for real‐time and high‐precision detection of the magnetostrictive deformation of an yttrium‐iron‐garnet sphere in three dimensions, based on the deformation induced spatial high‐order modes of the scattered field, postselection, and balanced homodyne detection.
Xiaomin Liu, Jing Zhang, Jie Li, Rongguo Yang, Jiangrui Gao, Tiancai Zhang   +5 more
wiley   +1 more source

Six‐ and Twelve‐Month Changes in Body Composition and 24‐h Energy Expenditure After a Very Low‐Calorie Ketogenic Diet

Obesity, EarlyView.
ABSTRACT Objective This study assessed changes in body composition and 24‐h energy metabolism at 6 and 12 months after initiation of a 1‐month very low‐calorie ketogenic diet (VLCKD) in women with obesity. Methods Seventeen women with obesity who completed a 1‐month VLCKD underwent a 4‐week transition phase with carbohydrate reintroduction, followed by
Alessio Basolo, Paolo Piaggi, Valentina Angeli, Paola Fierabracci, Chiara Bologna, Giordano Paolucci, Guido Salvetti, Luca Chiovato, Jonathan Krakoff, Alberto Landi, Ferruccio Santini   +10 more
wiley   +1 more source

Digital Beamforming and MIMO SAR: Review and New Concepts

, 2012
Spaceborne Synthetic Aperture Radar (SAR) is a unique tool for large scale Earth observation, but the current generation of SAR sensors suffers from some fundamental limitations with regard to their imaging and mapping capabilities.
Villano, Michelangelo, Patyuchenko, Anton, Laskowski, Piotr, Huber, Sigurd, Bordoni, Federica, Moreira, Alberto, Younis, Marwan, Krieger, Gerhard, Kim, Junghyo, Rommel, Tobias, Lopez-Dekker, Paco   +10 more
core  

Deciphering Freeze–Thaw Dynamics In Rockwalls: A Novel Approach for High Accuracy Regional‐Scale Modeling

Permafrost and Periglacial Processes, EarlyView.
ABSTRACT Using a large and novel array of instruments on five rockwalls in northern Gaspesia, their respective surface energy balances were calculated and their thermal regimes were measured and modeled to depths exceeding the seasonal frost penetration.
Tom Birien, Francis Gauthier
wiley   +1 more source