Results 31 to 40 of about 9,680 (278)

A Passive Radar System for Monitoring of Coastal Areas Ship Traffic Using Satellite Illumination Signals

Известия высших учебных заведений России: Радиоэлектроника, 2020
Introduction. Increasing requirements for improving of information systems for ensuring navigation safety in coastal areas of marine waters determine the search of new engineering and scientific solutions.
Nguyen Van Quan
doaj   +1 more source

Local finite-time Lyapunov exponent, local sampling and probabilistic source and destination regions [PDF]

Nonlinear Processes in Geophysics, 2015
The finite-time Lyapunov exponent (FTLE) is a powerful Lagrangian concept widely used for describing large-scale flow patterns and transport phenomena. However, field experiments usually have modest scales.
A. E. BozorgMagham, S. D. Ross, D. G. Schmale III   +2 more
doaj   +1 more source

Design and Performance Prediction of a Dual-Band Coupled-Fed Dipole Array Antenna for PCL Systems in the VHF Band

Applied Sciences, 2020
This article proposes the design of a dual-band coupled-fed dipole antenna for passive coherent location (PCL) systems in the very high frequency (VHF) band.
Sungsik Wang, Hongsuk Shim, Hosung Choo
doaj   +1 more source

Detection, Localization and Classification of Multiple Mechanized Ocean Vessels over Continental-Shelf Scale Regions with Passive Ocean Acoustic Waveguide Remote Sensing

Remote Sensing, 2018
Multiple mechanized ocean vessels, including both surface ships and submerged vehicles, can be simultaneously monitored over instantaneous continental-shelf scale regions >10,000 km 2 via passive ocean acoustic waveguide remote sensing.
Chenyang Zhu, Heriberto Garcia, Anna Kaplan, Matthew Schinault, Nils Olav Handegard, Olav Rune Godø, Wei Huang, Purnima Ratilal   +7 more
doaj   +1 more source

Visualization of electrographic flow fields of increasing complexity and detection of simulated sources during spontaneously persistent AF in an animal model

Frontiers in Cardiovascular Medicine, 2023
BackgroundMapping algorithms have thus far been unable to localize triggers that serve as drivers of AF, but electrographic flow (EGF) mapping provides an innovative method of estimating and visualizing in vivo, near real-time cardiac wavefront ...
Melissa H. Kong, Steven Castellano, Peter Ruppersberg, Ken S. Lizama, Boaz Avitall   +4 more
doaj   +1 more source

Reference signal extraction for GSM passive coherent location

, 2022
S.52-55This paper investigates two equalization methods enabling the passive coherent location (PCL) system using GSM as illuminator of opportunity to eliminate the distortion of the reference signal. The first one is the Constant Modulus Algorithm (CMA)
Zemmari, R.
core  

Counter-Passive Coherent Locator (C-PCL)—A Method of Remote Detection of Passive Radars for Electronic Warfare Systems

, 2021
Passive Coherent Location methods and techniques have an established position in the modern state-of-the-art radar. Inexpensive, easy to deploy and undetectable for other sensors, passive radars are growing in popularity.
Michał Knioła, Tomasz Rogala, Zenon Szczepaniak   +2 more
core   +1 more source

MEG responses to the perception of global structure within glass patterns. [PDF]

PLoS ONE, 2010
The perception of global form requires integration of local visual cues across space and is the foundation for object recognition. Here we used magnetoencephalography (MEG) to study the location and time course of neuronal activity associated with the ...
Jennifer B Swettenham, Stephen J Anderson, Ngoc J Thai   +2 more
doaj   +1 more source

Metamorphic Facies Distribution in the Western Alps Predicted by Petrological‐Thermomechanical Models of Syn‐Convergent Exhumation

Geochemistry, Geophysics, Geosystems, 2022
The distribution of metamorphic rocks throughout the western European Alps indicates subduction‐related metamorphism. However, processes by which high‐grade metamorphic rocks exhume remain disputed.
Joshua D. Vaughan‐Hammon, Lorenzo G. Candioti, Thibault Duretz, Stefan M. Schmalholz   +3 more
doaj   +1 more source

Aging Is a Key Driver for Adult Acute Myeloid Leukemia

Aging and Cancer, EarlyView.
Acute myeloid leukemia (AML) is a classical age‐related hematologic malignancy, and a key driver of AML is aging, which profoundly regulates intrinsic factors such as genomic instability, epigenetic reprogramming, and metabolic dysregulation, and alters bone marrow microenvironment.
Rong Yin, Haojian Zhang
wiley   +1 more source