Results 61 to 70 of about 6,179,327 (244)

Design and research of an ultra-wideband metal antenna with low radar cross section

Dianzi Jishu Yingyong, 2018
An ultra-wideband metal antenna with low radar cross section is proposed. The antenna adopts the metal Vivaldi as the radiation element, and utilizes a new-type frequency selective surface structure to reduce the radar cross section within the working ...
Zhang Qingchun, Yang Mingwu, Jiang Zhaoneng, Lu Xiaochi, Gao Sheng, Zhang Hua   +5 more
doaj   +1 more source

On Sea Ice/Water Discrimination by Airborne Weather Radar

IEEE Access, 2020
We consider a conceptual approach for the applicability of airborne weather radar for the sea ice/water discrimination and estimation of the sea ice age.
Alexey Nekrasov, Alena Khachaturian, Evgeny Abramov, Pavol Kurdel, Maria Gamcova, Jan Gamec, Mikhail Bogachev   +6 more
doaj   +1 more source

Enhancement of backscattering cross section from an equivalent human cylinder under oblique incidence

IET Microwaves, Antennas & Propagation, 2022
An analysis about the enhancement of backscattering radar cross section from an equivalent human body cylinder using a specific type of coating is presented.
Zeeshan A. Awan, Divitha Seetharamdoo
doaj   +1 more source

Development and performance evaluation of a multistatic radar system [PDF]

, 2008
Multistatic radar systems are of emerging interest as they can exploit spatial diversity, enabling improved performance and new applications. Their development is being fuelled by advances in enabling technologies in such fields as communications and ...
Doughty, Shaun Raymond, Doughty, S.R.
core  

Confinement‐Induced Donnan Potential Enables Sealed Hydrovoltaic Power From Microliter Water

Advanced Materials, EarlyView.
An ultrathin MXene/cellulose nanofiber (CNF) nanochannel‐based hydrovoltaic generator produces sustained direct current (DC) from a single microliter droplet under sealed operation. Asymmetric nanochannel confinement establishes a persistent ion gradient and a confinement‐induced Donnan potential, harvesting the interfacial free energy released upon ...
Sangyun Na, Geonyoung Jung, Yoojin Chang, Yun Goo Ro, Cheolhong Park, Jeonghee Yeom, Jinyoung Kim, Jeeyoon Kim, Hyejin Lee, Hyeji Oh, Hyunhyub Ko   +10 more
wiley   +1 more source

Bistatic High-Frequency Radar Cross-Section of the Ocean Surface with Arbitrary Wave Heights

Remote Sensing, 2020
The scattering theory developed in the past decades for high-frequency radio oceanography has been restricted to surfaces with small heights and small slopes.
Murilo Teixeira Silva, Weimin Huang, Eric W. Gill   +2 more
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

Orbit determination of space debris using a bi-static radar configuration with a multiple-beam receiver [PDF]

, 2014
In this work the use of a multi-beaming radar system is analyzed and a possible setup of a closed loop system (i.e. from measurement and data acquisition to orbit determination) is described.
Morselli, A., Montebugnoli, S., Bernelli-Zazzera, F., Morselli, A, Di Lizia, P., K. Zarb Adami, A. Magro, Adami, KZ, G. Bianchi, Di Lizia, P, Bianchi, G, Adami, K.Z., E. Salerno, DI LIZIA, PIERLUIGI, R. Armellin, Bianchi, G., MORSELLI, ALESSANDRO, Montebugnoli, S, Zazzera, FB, Magro, A, Salerno, E., Magro, A., Armellin, R, Armellin, R., S. Montebugnoli, BERNELLI ZAZZERA, FRANCO, Salerno, E   +26 more
core  

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

Acceleration of parasitic multistatic radar system using GPGPU [PDF]

, 2011
This dissertation details the implementation of PMR [Parasitic Multistatic Radar] signal processing chain in the GPGPU [General Purpose Graphic Processing Units] platform.
John, Mathew
core   +1 more source