Results 11 to 20 of about 1,235,187 (346)
Journal of Marine Science and Engineering, 2023 Source localization in underwater sensor networks (UWSNs) presents complex challenges due to sensor nodes drift caused by ocean currents, non-line-of-sight (NLOS) propagation resulting from underwater multipath effects, and environmental noise.
Ying Liu +3 more
doaj +2 more sources
Non-line of Sight Transient Rendering
Jornada de Jóvenes Investigadores del I3A, 2022 Non-line of sight imaging reconstructs hidden geometry using time-resolved measurements of indirect diffuse reflections emitted by a laser. To help develop new applications, we simulate light transport in these occluded scenes and introduce a set of simple, yet effective subpath sampling techniques for efficiency, with an open-source implementation.
Royo, Diego +3 more
openaire +4 more sources
Non-line-of-sight imaging over 1.43 km. [PDF]
Proc Natl Acad Sci U S A, 2021 Significance Non–line-of-sight (NLOS) imaging can recover details of a hidden scene from the indirect light that has scattered multiple times. Despite recent advances, NLOS imaging has remained at short-range verifications.
Wu C +11 more
europepmc +2 more sources
Strong 21-cm fluctuations and anisotropy due to the line-of-sight effect of radio galaxies at cosmic dawn [PDF]
Monthly notices of the Royal Astronomical Society, 2023 The reported detection of the global 21-cm signal by the EDGES collaboration is significantly stronger than standard astrophysical predictions. One possible explanation is an early radio excess above the cosmic microwave background.
S. Sikder +3 more
semanticscholar +1 more source
Wavenumber-Division Multiplexing in Line-of-Sight Holographic MIMO Communications [PDF]
IEEE Transactions on Wireless Communications, 2021 Starting from first principles of wave propagation, we consider a multiple-input multiple-output (MIMO) representation of a communication system between two spatially-continuous volumes. This is the concept of holographic MIMO communications.
L. Sanguinetti +2 more
semanticscholar +1 more source
An Adaptive Line-of-Sight (ALOS) Guidance Law for Path Following of Aircraft and Marine Craft
IEEE Transactions on Control Systems Technology, 2023 This brief presents a novel nonlinear adaptive line-of-sight (ALOS) guidance law for path following, compensating for drift forces due to wind, waves, and ocean currents.
T. Fossen
semanticscholar +1 more source
Non-line-of-Sight Imaging via Neural Transient Fields [PDF]
IEEE Transactions on Pattern Analysis and Machine Intelligence, 2021 We present a neural modeling framework for non-line-of-sight (NLOS) imaging. Previous solutions have sought to explicitly recover the 3D geometry (e.g., as point clouds) or voxel density (e.g., within a pre-defined volume) of the hidden scene.
Siyuan Shen +7 more
semanticscholar +1 more source
Drones, 2022 Unmanned air vehicles (UAVs) used as aerial base stations (ABSs) can provide communication services in areas where cellular network is not functional due to a calamity.
Abdul Basit Siddiqui +4 more
doaj +1 more source
Line-of-Sight MIMO via Intelligent Reflecting Surface
IEEE Transactions on Wireless Communications, 2023 This paper deals with line-of-sight (LOS) MIMO communication via an intelligent reflecting surface (IRS). It is shown that the number of spatial degrees of freedom (DOF) afforded by this setting grows in proportion with the IRS aperture, as opposed to ...
Heedong Do, N. Lee, A. Lozano
semanticscholar +1 more source
Propagation path loss prediction modelling in enclosed environments for 5G networks: A review
Heliyon, 2022 Millimeter wave path loss modeling is essential for reliable system design and accurate link budget calculations. The motivation for this research is that channel modeling in 5G millimeter wave propagation in an indoor environment is a current research ...
Tolulope T. Oladimeji +2 more
doaj +1 more source