Remote Sensing, 2022 Ship detection in synthetic aperture radar (SAR) images is a significant and challenging task. However, most existing deep learning-based SAR ship detection approaches are confined to single-polarization SAR images and fail to leverage dual-polarization ...
Xiaowo Xu +6 more
doaj +4 more sources
Dispersion engineered metasurfaces for broadband, high-NA, high-efficiency, dual-polarization analog image processing. [PDF]
Nat Commun, 2023 Optical metasurfaces performing analog image processing – such as spatial differentiation and edge detection – hold the potential to reduce processing times and power consumption, while avoiding bulky 4 F lens systems.
Cotrufo M, Arora A, Singh S, Alù A.
europepmc +3 more sources
High-Gain Dual-Polarization Microstrip Antenna Based on Transmission Focusing Metasurface. [PDF]
Materials (Basel)In this paper, a single-feed microstrip antenna (MA) equipped with a transmission-mode focusing metasurface (MS) is proposed to achieve dual-polarization capabilities and superior high-gain radiation performance.
Sun Y +7 more
europepmc +2 more sources
Design of 94GHz Dual-Polarization Antenna Fed by Diagonal Horn for Cloud Radars
IEEE Access, 2022 In this paper, a 94 GHz dual-polarization high-isolation cassegrain antenna feed by a diagonal horn antenna is designed. The antenna consists of a D = 540 mm main reflector, sub-reflector, and dual-port dual-polarization diagonal horn feed antenna.
Jie Wang +4 more
doaj +2 more sources
A Dual-Polarization Programmable Metasurface for Green and Secure Wireless Communication. [PDF]
Adv Sci (Weinh)Dual‐polarization programmable metasurfaces can flexibly manipulate electromagnetic (EM) waves while providing approximately twice the information capacity. Therefore, they hold significant applications in next‐generation communication systems.
Wang ZX +6 more
europepmc +2 more sources
Strain-Induced Surface Interface Dual Polarization Constructs PML-Cu/Bi12O17Br2 High-Density Active Sites for CO2 Photoreduction. [PDF]
Nanomicro LettStrain induces coupling in Bi12O17Br2 and Cu porphyrin-based monoatomic layer (PML-Cu), constructing Bi–O bonding interface in PML-Cu/BOB (PBOB). Surface interface dual polarization boosts internal electric field, promoting electron transfer.
Zhang Y +8 more
europepmc +2 more sources
Scattering Mechanism Extraction by a Modified Cloude-Pottier Decomposition for Dual Polarization SAR
Remote Sensing, 2015 Dual polarization is a typical operational mode of polarimetric synthetic aperture radar (SAR). However, few studies have considered the scattering mechanism extraction of dual-polarization SARs.
Kefeng Ji, Yonghui Wu
doaj +3 more sources
CFAR-DP-FW: A CFAR-Guided Dual-Polarization Fusion Framework for Large-Scene SAR Ship Detection
IEEE Journal of Selected Topics in Applied Earth Observations and Remote SensingEffective ship detection in synthetic aperture radar (SAR) imagery is crucial for maritime safety and surveillance. Despite the advancements in deep learning for SAR ship detection, significant challenges remain, particularly in large scenes.
Tianjiao Zeng +7 more
doaj +2 more sources
Large-Scale Automatic Vessel Monitoring Based on Dual-Polarization Sentinel-1 and AIS Data
Remote Sensing, 2019 This research addresses the use of dual-polarimetric descriptors for automatic large-scale ship detection and characterization from synthetic aperture radar (SAR) data.
CARLOS Lopez-Martinez +2 more
exaly +2 more sources
Extension of Scattering Power Decomposition to Dual-Polarization Data for Tropical Forest Monitoring
Remote Sensing, 2023 A new scattering power decomposition method is developed for accurate tropical forest monitoring that utilizes data in dual-polarization mode instead of quad-polarization (POLSAR) data.
Ryu Sugimoto +3 more
doaj +1 more source