Results 11 to 20 of about 47,269 (283)

A Dataset with Multibeam Forward-Looking Sonar for Underwater Object Detection [PDF]

open access: yesScientific Data, 2022
Multibeam forward-looking sonar (MFLS) plays an important role in underwater detection. There are several challenges to the research on underwater object detection with MFLS. Firstly, the research is lack of available dataset.
Kaibing Xie, Jian Yang, Kang Qiu
semanticscholar   +1 more source

SLNR-Based Secure Energy Efficient Beamforming in Multibeam Satellite Systems

open access: yesIEEE Transactions on Aerospace and Electronic Systems, 2023
Motivated by the fact that both security and energy efficiency are the fundamental requirements and design targets of future satellite communications, this letter investigates secure energy efficient beamforming in multibeam satellite systems, where the ...
Zhi Lin   +6 more
semanticscholar   +1 more source

Implementasi Struktur Meander Line untuk Mereduksi Ukuran Butler Matrix 2 × 2

open access: yesJurnal Nasional Teknik Elektro dan Teknologi Informasi, 2021
Butler matrix adalah beamforming network yang umum digunakan pada antena multibeam karena memiliki struktur yang sederhana dan efisiensi yang tinggi. Namun, Butler matrix memiliki dimensi yang relatif besar.
Zulfi, Achmad Munir
doaj   +1 more source

Integrating Towed Underwater Video and Multibeam Acoustics for Marine Benthic Habitat Mapping and Fish Population Estimation

open access: yesGeosciences, 2021
The west Florida shelf (WFS; Gulf of Mexico, USA) is an important area for commercial and recreational fishing, yet much of it remains unmapped and unexplored, hindering effective monitoring of fish stocks. The goals of this study were to map the habitat
Alexander R. Ilich   +10 more
doaj   +1 more source

On interferometric duality in multibeam experiments [PDF]

open access: yesJournal of Physics A: Mathematical and General, 2003
We critically analyze the problem of formulating duality between fringe visibility and which-way information, in multibeam interference experiments. We show that the traditional notion of visibility is incompatible with any intuitive idea of complementarity, but for the two-beam case.
BIMONTE, GIUSEPPE ROBERTO, MUSTO, RENATO
openaire   +3 more sources

Users' grouping algorithm for fairness improvement of NOMA‐based multi‐beams satellite networks intended for 5G

open access: yesIET Communications, 2023
Non‐Orthogonal Multiple‐Access (NOMA)‐based Multibeam Satellite Networks (MBSNs) are intended for 5G implementation, and 5G networks set the requirement for both high system capacity as well as high system reliability to all users, which is achieved via ...
Joel Biyoghe, Vipin Balyan
doaj   +1 more source

Predicted Mapping of Seabed Sediments Based on MBES Backscatter and Bathymetric Data: A Case Study in Joseph Bonaparte Gulf, Australia, Using Random Forest Decision Tree

open access: yesJournal of Marine Science and Engineering, 2021
Predictive mapping of seabed sediments based on multibeam bathymetric (BM), and backscatter (BS) data is effective for mapping the spatial distribution of the substrate.
Wei Xu   +3 more
doaj   +1 more source

Outlier quantification for multibeam data

open access: yesInformatik Spektrum, 2022
AbstractThis paper discusses the challenges of applying a data analytics pipeline for a large volume of data as can be found in natural and life sciences. To address this challenge, we attempt to elaborate an approach for an improved detection of outliers. We discuss an approach for outlier quantification for bathymetric data.
Tobias Ziolkowski   +3 more
openaire   +1 more source

Multi-Beam Scanning Electron Microscopy for High-Throughput Imaging in Connectomics Research

open access: yesFrontiers in Neuroanatomy, 2018
Major progress has been achieved in recent years in three-dimensional microscopy techniques. This applies to the life sciences in general, but specifically the neuroscientific field has been a main driver for developments regarding volume imaging.
Anna Lena Eberle, Dirk Zeidler
doaj   +1 more source

Dual-Beam Steerable TMAs Combining AM and PM Switched Time-Modulation

open access: yesSensors, 2022
Wireless sensor networks (WSN) are increasingly requiring directional antennas that not only provide higher capacity, security, transmission range or robustness against interference, but also contribute with smart antenna capabilities such as adaptive ...
Roberto Maneiro-Catoira   +3 more
doaj   +1 more source

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