Results 81 to 90 of about 1,404,977 (295)

Time for a change in phased array radar architectures- part II: The d-radar

, 2015
A novel multifunction phased array radar is introduced, characterized by conformal arrays, extensive usage of digital beam forming and separation between Tx and Rx arrays.
Piracci, EG, Quattrociocchi, S, Madia, F, Emilio G. Piracci, Gaspare Galati, Galati, G, GALATI, GASPARE, Franco, S, Sonia Quattrociocchi, Quattrociocchi, S., Carta, P, Paola Carta, Stefania Franco, PIRACCI, EMILIO GIUSEPPE, Francesco Madia   +14 more
core   +1 more source

Optimization of inter-dependent metrics for phased array radar control

, 2022
6 S.Static allocation of phased array radar resources for the surveillance of low earth orbit objects is addressed in this paper. The objective of the optimization is to utilize prior knowledge of likely target trajectories to maximize the expected ...
Charlish, A., Sciotti, M.
core   +1 more source

qcGEM: A Graph‐Based Molecular Representation With Quantum Chemistry Awareness

Advanced Science, EarlyView.
In this work, we introduce qcGEM, a quantum‐chemistry‐aware graph‐based embedding of molecules that incorporates physical priors into molecular representation learning. Through a specially designed model architecture to adequately process quantum chemistry information as well as three‐dimensional molecular geometry, qcGEM provides a compact, physics ...
Haoyu Wang, Ziyan Zhang, Swee Hong Ng, Haipeng Gong   +3 more
wiley   +1 more source

Hydrogel Phase Transition‐Driven Soft Gating Circumvents Debye Screening for Advanced Biosensing

Advanced Science, EarlyView.
A 3D soft gate utilizes a macroscopic hydrogel phase transition to effectively circumvent Debye screening in high‐salt environments. The intact matrix maximizes transmembrane ion flux via volumetric Donnan enrichment and superhydrophilicity. Target‐triggered network disassembly abolishes these effects, introducing a synergistic physical barrier.
Liu Shi, Zimeng Zhang, Bingheng Li, Yalei Gao, Ruirui Zhang, Zheying Mu, Jian Ni, Bing Bo, Genxi Li   +8 more
wiley   +1 more source

Target recognition techniques for multifunction phased array radar [PDF]

, 2010
This thesis, submitted for the degree of Doctor of Philosophy at University College London, is a discussion and analysis of combined stepped-frequency and pulse-Doppler target recognition methods which enable a multifunction phased array radar designed
French, A.
core  

X-BAND PHASED-ARRAY WEATHER-RADAR POLARIMETRY TESTBED

, 2022
Phased-array weather radar have potential to replace reflector dish radar in major weather radar networks such as NEXRAD, providing faster update times and greater scan flexibility.
Heberling, William
core   +1 more source

Spatiotemporal Regulation of Hierarchical Assembly of Hydroxyapatite for Enamel Remineralization

Advanced Science, EarlyView.
Biomimetic repair exhibits unique advantages for enamel regeneration compared with conventional clinical treatments. An enzymatic mineralization system (EMS) is developed, where the resulting HAP nanorods hierarchically assemble into a highly ordered structure on the enamel surface through the spatiotemporal modulation of interfacial energies of ...
Zhenhang Tang, Zhisen Zhang, Yuanyu Zhou, Wenzhi Wu, Congrui Zhao, Chang Liu, Tong Shi, Wenjing Jin, Zhaoming Liu, Weifeng Fang, Qingyun Lin, Yi He, Zhijian Xie, Ruikang Tang, Changyu Shao, Zhuo Chen   +15 more
wiley   +1 more source

Toward Rational Design of Aqueous Battery Membranes Beyond the Selectivity‐Conductivity Trade‐Off

Advanced Science, EarlyView.
This review examines sulfonated membranes for redox flow batteries. It focuses on proton transport mechanism, membrane design, performance limits, optimization strategies, and the pathway from molecular design to membrane manufacturing. ABSTRACT Electrochemical energy‐storage systems increasingly require membranes that can simultaneously deliver fast ...
Jinkang Liu, Mingbo Xie, Zhenghao Wang, Huacun Li, Jun Xie, Pan Liu, Qingwei Wang, Xu Yan, Meiqing Shi, Liyuan Chai, Yue Luo, Zining Tang, Rui Tan, Liyuan Zhang   +13 more
wiley   +1 more source

Analysis and Prospects of Phased Array Radar Based on Microwave Photonics

Leida xuebao, 2019
In this paper, the development requirements and challenges of phased array radar design are discussed. A new architecture of phased array radar based on microwave photonic technology is proposed, and its technical advantages are explained.
GAO Hui, DENG Ye, ZHANG Jinping, ZHOU Zhipeng   +3 more
doaj   +1 more source

Metasurface‐Based Multidimensional Light‐Field Manipulation: From Technologies to Applications

Advanced Science, EarlyView.
Multidimensional metasurfaces enable versatile manipulation of multiple optical degrees of freedom, including phase, amplitude, polarization, wavelength, and orbital angular momentum. This review summarizes their fundamental mechanisms, emerging strategies for multidimensional light‐field control, and key applications in optical computing, imaging ...
Heliang Yin, Shuo Sun, Jiahao Zhang, Jianuo Hu, Yubin Qiao, Liang Chen, Jin Li   +6 more
wiley   +1 more source