Results 31 to 40 of about 9,681 (179)

TDOA-based adaptive observer trajectory optimisation algorithm for tracking in passive coherent location system

open access: yesThe Journal of Engineering, 2019
In the passive coherent location system with fixed observers, the target tracking performance is limited by the inappropriate localisation geometry. This study proposes an adaptive observer trajectory optimisation (AOTO) algorithm in terms of minimising ...
Tong Jing, Wei Tian, Gaoming Huang
doaj   +1 more source

White space Passive Coherent Location system based on IEEE 802.22 [PDF]

open access: yes, 2015
In this work we describe a Passive Coherent Location (PCL) system that exploits the signals emitted by IEEE 802.22 devices, operating in the white spaces of the VHF/UHF TV bands. The analysed system is called White Space PCL (WS-PCL).
STINCO, PIETRO   +3 more
core   +1 more source

Moving Target Detection and Parameter Estimation Using BeiDou GEO Satellites-Based Passive Radar With Short-Time Integration

open access: yesIEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing, 2023
Owing to the global coverage and high visibility of global navigation satellite systems (GNSS), passive radar using GNSS satellites as transmitters of opportunity has shown great potential for moving target detection, and its possibility to detect short ...
Ce Zhang   +3 more
doaj   +1 more source

Selective auditory attention modulates cortical responses to sound location change for speech in quiet and in babble.

open access: yesPLoS ONE, 2023
Listeners use the spatial location or change in spatial location of coherent acoustic cues to aid in auditory object formation. From stimulus-evoked onset responses in normal-hearing listeners using electroencephalography (EEG), we have previously shown ...
Erol J Ozmeral, Katherine N Menon
doaj   +1 more source

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

open access: yesИзвестия 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]

open access: yesNonlinear 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   +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

open access: yesApplied 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

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

open access: yesFrontiers 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   +4 more
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

open access: yesRemote 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   +7 more
doaj   +1 more source

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

open access: yesPLoS 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   +2 more
doaj   +1 more source

Home - About - Disclaimer - Privacy