Results 71 to 80 of about 5,022,313 (284)

Game Theory-based Joint Optimization Algorithm for UAV Swarm Task Allocation and Trajectory Planning in Phantom Track Deception

Leida xuebao
To address interruptions in phantom tracks caused by platform failures or damage during Unmanned Aerial Vehicle (UAV) swarm deception operations against radar networks, this study proposes a game theory-based joint optimization algorithm for UAV swarm ...
Yihan LI, Chenguang SHI, Fei LONG, Jianjiang ZHOU   +3 more
doaj   +1 more source

Optimal Planning of a Weather Radar Network

Journal of Atmospheric and Oceanic Technology, 2003
An approach to the optimal planning of a weather radar network is presented. In the approach, several aspects affecting the planning decision, including terrain blockage, the need to measure with two Doppler weather radars in some regions, and the environmental impact of their installation, are taken into account using a proper mathematical formulation.
MINCIARDI, RICCARDO, SACILE, ROBERTO, SICCARDI, FRANCO   +2 more
openaire   +2 more sources

Development of a MIMO Radar System Demonstrator - Calibration and Demonstration of First Results [PDF]

, 2012
The success of current spaceborne Synthetic Aperture Radar (SAR) is boosting the performance requirements of next generation systems. In order to cope with the evolution of SAR the design of the new systems will need to meet higher requirements for ...
A. Patyuchenko, Patyuchenko, Anton, Laskowski, Piotr, T. Rommel, Younis, Marwan, G. Krieger, Krieger, Gerhard, M. Younis, Rommel, Tobias, P. Laskowski   +9 more
core   +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

A Compact Three-Layer Stacked Feed Network Integrating a Quad-Ridged Orthomode Transducer and Diplexers for Dual-Band Millimeter-Wave Applications

Micromachines
A compact, low-profile dual-band feed network operating at 37–40 GHz (Ka-band) and 70–86 GHz (E-band) is presented for millimeter-wave backhaul applications.
Yuanjun Shen, Tianling Zhang, Jiayin Guo, Pengpeng Chu   +3 more
doaj   +1 more source

How “Green” is Your Functional Material? Assessing Environmental Impacts of Multi‐Step Synthetic Protocols in Material Sciences at Various Technology Levels

Advanced Materials, EarlyView.
Environmental Synthesis Radar (ESR) evaluates the environmental impact of (early‐stage) multi‐step chemical syntheses, providing a holistic view by using 18 midpoint impact categories. Unlike conventional life‐cycle assessment (LCA) approaches, ESR reveals three complementary metrics: overall impact Vtotal, environmental hotspots VEF, and critical ...
Laura Plein, Alexander Schommer, Florian Dietrich, Moritz Gutsch, Heike Klesper, Kevin Schuller, Lars Jahnke, Jens Leker, Klaus Meerholz   +8 more
wiley   +1 more source

A practical bistatic passive radar system for use with DAB and DRM illuminators [PDF]

, 2008
Digital broadcasts provide powerful illuminators of opportunity with waveforms that produce excellent radar ambiguity functions. An experimental program to investigate the possibility of such broadcasts for target tracking radar is described. In addition,
H. Yardley, C.J. Coleman, R.A. Watson, Coleman, C., Watson, R., Yardley, H.   +5 more
core   +1 more source

Ti3C2Tx MXene/Silver Composite Foams For Lightweight, High‐Performance Electromagnetic Interference Shielding and Joule Heating

Advanced Materials Interfaces, EarlyView.
Ultrathin MXene/EMF composite foams achieve a specific shielding efficiency of 749.6 dB.dB·cm3$\mathrm{dB}\cdot {\mathrm{cm}}^{3}$/g, while the silver‐enhanced MXene/Ag/EMF reaches 81.4 dB shielding effectiveness at just 1.0 mm thickness. Both composites exhibit rapid Joule heating, retain stability up to 250∘C$^\circ{\rm C}$, and withstand 1000 ...
Abdullah A. Mahmood, Mingxuan Li, Vahid Rad, Mehdi Zarei, Chen‐Yu Yeh, Masoud Soroush, Guangyong Li, Paul W. Leu   +7 more
wiley   +1 more source

UCST‐Driven Shape Morphing in Digital Light Processing 4D‐Printed Hydrogels

Advanced Materials Technologies, EarlyView.
A DLP‐printable UCST hydrogel based on poly(acrylic acid‐co‐acrylamide) enables reversible thermally induced expansion and 4D shape morphing. Rational control of composition, porosity, and multimaterial architecture enables predictable 4D shape morphing through differential swelling and localized actuation, opening new opportunities for high‐resolution
Fato Niang, Vincent Lapinte, Sebastien Blanquer   +2 more
wiley   +1 more source

A decade of the Super Dual Auroral Radar Network (SuperDARN): scientific achievements, new techniques and future directions [PDF]

, 2007
The Super Dual Auroral Radar Network (SuperDARN) has been operating as an international co-operative organisation for over 10 years. The network has now grown so that the fields of view of its 18 radars cover the majority of the northern and southern ...
M. P. Freeman, Sofko, G.J., P. L. Dyson, Ruohoniemi, J. M., Kikuchi, T., J. M. Ruohoniemi, Chisham, G., Walker, A.D.M., Dyson, P. L., R. A. Greenwald, G. J. Sofko, Milan, S.E., T. K. Yeoman, M. Pinnock, J.-P. Villain, Freeman, M. P., A. Grocott, Rash, J.P.S., Sato, N., Yeoman, T. K., Freeman, M.P., Bristow, W.A., Milan, S. E., K. A. McWilliams, N. Sato, Lester, M., Villain, J.-P., Greenwald, R.A., G. Chisham, Bristow, W. A., A. D. M. Walker, Grocott, A., Mcwilliams, K. A., M. Lester, Pinnock, M., Dyson, P.L., Walker, A. D. M., McWilliams, K.A., T. Kikuchi, S. E. Milan, Ruohoniemi, J.M., Greenwald, R. A., Sofko, G. J., J. P. S. Rash, Rash, J. P. S., W. A. Bristow, Yeoman, T.K.   +46 more
core   +2 more sources