Results 51 to 60 of about 1,327,684 (330)

First-order Sea Clutter Modeling and Simulation of High Frequency Passive Radar

open access: yesLeida xuebao, 2015
High Frequency (HF) passive radar is a typical bistatic radar, and the modeling and simulation of sea clutter in bistatic radar are worth researching for HF passive radar.
Cheng Feng, Zeng Qing-ping, Gong Zi-ping
doaj   +1 more source

Target DoA estimation in passive radar using non-uniform linear arrays and multiple frequency channels [PDF]

open access: yes, 2018
In this paper we present a robust approach for target direction of arrival (DoA) estimation in passive radar that jointly exploits spatial and frequency diversity. Specifically we refer to a DVB-T based passive radar receiver equipped with a linear array
Cardinali, Roberta   +3 more
core   +1 more source

Multifunctional Bio‐Based Packaging for Perishable Foods: Structural Design, Scalable Fabrication, and Versatile Applications

open access: yesAdvanced Materials, EarlyView.
An overview of design principles and scalable fabrication strategies for multifunctional bio‐based packaging. Radiative cooling films, modified‐atmosphere films/membranes, active antimicrobial/antioxidant platforms, intelligent optical/electrochemical labels, and superhydrophobic surfaces are co‐engineered from material chemistry to mesoscale structure
Lei Zhang   +6 more
wiley   +1 more source

Synchronous Design and Test of Distributed Passive Radar Systems Based on Digital Broadcasting and Television

open access: yesLeida xuebao, 2017
Digital broadcasting and television are important classes of illuminators of opportunity for passive radars. Distributed and multistatic structure are the development trends for passive radars. Most modern digital broadcasting and television systems work
Wan Xianrong   +4 more
doaj   +1 more source

A Passive Probe for Subsurface Oceans and Liquid Water in Jupiter's Icy Moons

open access: yes, 2014
We describe an interferometric reflectometer method for passive detection of subsurface oceans and liquid water in Jovian icy moons using Jupiter's decametric radio emission (DAM).
Heggy, Essam   +5 more
core   +1 more source

Passive Components Technology for THz-Monolithic Integrated Circuits (THz-MIC) [PDF]

open access: yes, 2017
In this work, a viable passive components and transmission media technology is presented for THz-Monolithic Integrated Circuits (THz-MIC). The developed technology is based on shielded microstrip (S-MS) employing a standard monolithic microwave ...
Benakaprasad, Bhavana   +6 more
core   +1 more source

Data‐Driven Cation Engineering Guides Electrolyte Design for Sustainable Aqueous Zinc Battery Chemistries

open access: yesAdvanced Materials, EarlyView.
To address the persistent challenges of vanadium dissolution and capacity fading in zinc‐ion batteries, we introduce a cation‐engineered electrolyte strategy underpinned by a data‐driven framework. This approach efficiently and reliably predicts a Na+‐Mg2+‐Zn2+ tri‐cation electrolyte with well‐balanced and sustainable advantages, enabling Zn/VOx ...
Xuesong Xie   +11 more
wiley   +1 more source

Ambiguity Function and Resolution Characteristic Analysis of DVB-S Signal for Passive Radar

open access: yesLeida xuebao, 2012
This paper gives the performance research on the ambiguity function and resolution of passive radar based on DVB-S (Digital Video Broadcasting-Satellite) signal.
Jin Wei, Lü Xiao-de, Xiang Mao-sheng
doaj   +1 more source

Passive Radar Source Localization Based on Cuckoo Search NVTDOA

open access: yesInternational Journal of Antennas and Propagation, 2020
In order to meet the requirement of passive radar source localization in electronic warfare, the concept of the virtual time differences of arrival (VTDOA) is proposed by taking advantage of the characteristics of the same UAV in different positions at ...
Gang Niu, Jie Gao, Tai-hang Du
doaj   +1 more source

Passive Radar at the Roadside Unit to Configure Millimeter Wave Vehicle-to-Infrastructure Links [PDF]

open access: yesIEEE Transactions on Vehicular Technology, 2019
Millimeter wave (mmWave) vehicular channels are highly dynamic, and the communication link needs to be reconfigured frequently. In this work, we propose to use a passive radar receiver at the roadside unit to reduce the training overhead of establishing ...
Anum Ali   +2 more
semanticscholar   +1 more source

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