Analysis of beampattern dwell time for planar frequency diverse array
IET Signal Processing, 2021 Frequency diverse array (FDA) has received much attention due to its both range–angle‐dependent beampattern. However, most of the existing works focus on the linear FDA, and time‐varying characteristics of its beampattern only give a rough qualitative ...
Hui Chen, Zi‐Hao Li, Wen‐Qin Wang
doaj +1 more source
Frequency Increment Design Method of MR-FDA-MIMO Radar for Interference Suppression
Remote Sensing, 2023 In the present complex electromagnetic environment, radar target detection is threatened by different kinds of interferences, especially mainlobe deceptive interference, which occupies the same energy distributions of targets spatially, meaning that ...
Zhixia Wu +5 more
doaj +1 more source
The Atacama Large Millimeter/submillimeter Array: Overview & status [PDF]
, 2006 The Atacama Large Millimeter/submillimeter Array (ALMA) is an international radio telescope under construction in the Atacama Desert of northern Chile. ALMA will be situated on a high-altitude site at 5000 m elevation which provides excellent atmospheric
Beasley, A. J. +2 more
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Frequency Diverse Array Super-Resolution Design With Element Locator Polynomial Rooting Approach
IEEE Access, 2023 Unlike traditional phased-array only generating angle-dependent beampattern, the relatively new frequency diverse array (FDA) produces an angle-range-dependent transmit beampattern that can provide many new applications.
Wen-Qin Wang
doaj +1 more source
Statistical Analysis for Time Modulation-Based Frequency Diverse Array Beampattern
IEEE Access, 2019 Frequency diverse array (FDA) has received much attention due to its both range- and angle-dependent beampatterns. However, the range-angle coupling and time-variant beampattern in FDA may affect its applicability.
Hui Chen +3 more
doaj +1 more source
Review of Anisotropic Terahertz Material Response
, 2013 Anisotropy is ubiquitous in solids and enhanced in low-dimensional materials. In response to an electromagnetic wave, anisotropic absorptive and refractive properties result in dichroic and birefringent optical phenomena both in the linear and nonlinear ...
Arikawa, T. +4 more
core +1 more source
Advances on Frequency Diverse Array Radar and Its Applications
Leida xuebao, 2018 Unlike the conventional phased array that provides only angle-dependent transmit beampattern, Frequency Diverse Array (FDA) employs a small frequency increment across its array elements to produce automatic beam scanning without requiring phase shifters ...
Wang Wenqin +3 more
doaj +1 more source
Mixed targets localization using symmetric nested frequency diverse array radar
IET Signal Processing, 2021 A mixed near‐field and far‐field targets localization method based on sparse signal reconstruction and subspace method is presented, which can obtain both direction‐of‐arrival (DOA) and range information of the targets by utilizing symmetric nested ...
Hui Chen, Wen‐Qin Wang, Wei Wang
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Revealing the structure of land plant photosystem II: the journey from negative‐stain EM to cryo‐EM
FEBS Letters, EarlyView.Advances in cryo‐EM have revealed the detailed structure of Photosystem II, a key protein complex driving photosynthesis. This review traces the journey from early low‐resolution images to high‐resolution models, highlighting how these discoveries deepen our understanding of light harvesting and energy conversion in plants.
Roman Kouřil
wiley +1 more source
Joint Sparsity-Based Range-Angle-Dependent Beampattern Synthesis for Frequency Diverse Array
IEEE Access, 2017 For frequency diverse array (FDA) range-angle-dependent beampattern synthesis, the objective is to obtain the desired beampattern performance using fewer antenna elements or smaller aperture.
Hui Chen, Huai-Zong Shao, Wen-Qin Wang
doaj +1 more source