Results 21 to 30 of about 1,150,243 (294)
On C-Band Quad-Polarized Synthetic Aperture Radar Properties of Ocean Surface Currents
Remote Sensing, 2019 We present new results for ocean surface current signatures in dual co- and cross-polarized synthetic aperture radar (SAR) images. C-band RADARSAT-2 quad-polarized SAR ocean scenes are decomposed into resonant Bragg scattering from regular (non-breaking)
Shengren Fan +5 more
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Broadband Vertically/Horizontally Dual-Polarized Antenna for Base Stations
International Journal of Antennas and Propagation, 2017 A broadband vertically/horizontally (V/H) dual-polarized antenna is proposed for mobile communication base stations. The antenna consists of two perpendicularly placed broadband planar antenna elements.
YueHui Cui, XiaoNa Gao, RongLin Li
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IEEE Access, 2019 A planar double-layer hybrid decoupling structure with the polarization-insensitive characteristics is proposed as an effective isolator for wideband, circularly/dual-polarized, high-density patch arrays.
Zhiyuan Chen +4 more
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Dual-Band and Multi-State Polarization Conversion Using aTerahertz Symmetry-Breaking Metadevice
Nanomaterials, 2023 We numerically and experimentally demonstrate a terahertz metadevice consisting of split-ring resonators (SRRs) present within square metallic rings. This device can function as a dual-band polarization converter by breaking the symmetry of SRRs. Under x-
Yuwang Deng +7 more
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Dual polarization split lenses
Optics Express, 2017 We report the realization of polarization sensitive split lens configurations. While split lenses can be used to easily generate different types of controlled structured light patterns, their realization has been limited so far to scalar beams. Here we propose and experimentally demonstrate their generalization to vectorial split lenses, leading to ...
Aarón Cofré +6 more
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IEEE Access, 2017 A fast dual polarization hopping (FDPH) system is designed to enhance the physical layer secure transmission in fixed down-link satellite communications. In order to prevent the eavesdropper from detecting transmitted signals, a pair of dual polarization
Xiaokai Zhang +2 more
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IEEE Access, 2017 In this paper, we propose a polarization filtering-based transmission scheme to enhance the physical layer security in the dual-polarized satellite communication.
Zhangkai Luo, Huali Wang, Kaijie Zhou
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Design and Fabrication of a dual-polar reflector array antenna for satellite applications [PDF]
فصلنامه علوم و فناوری فضایی, 2020 This paper presents a new unit to design dual linearly polarized reflectarray antenna at ku for satellite telecommunication. Two orthogonal sets of parallel dipoles are used for each polarization to achieve more degree of freedom in the design and wider ...
Alireza HeshmatiMoez +3 more
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A Left/Right-Handed Dual Circularly-Polarized Antenna With Duplexing and Filtering Performance
IEEE Access, 2019 A shared-radiator dual-band dual-sense circularly-polarized (CP) microstrip antenna with duplexing and filtering functions is presented. For each band, there is a coupling network, which consists of a hairpin resonator, a straight slot, and a U-slot, and
Jian-Feng Li +4 more
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A New Approach for Ocean Surface Wind Speed Retrieval Using Sentinel-1 Dual-Polarized Imagery
Remote Sensing, 2023 A synthetic aperture radar (SAR) has the capability to observe ocean surface winds with a high spatial resolution, even under extreme conditions. The purpose of this work was to develop a new method for wind speed retrieval with the combination of SAR ...
Yuan Gao, Yunhua Wang, Weili Wang
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