Results 21 to 30 of about 211,747 (260)
Finite Time Lyapunov Exponent Analysis of Model Predictive Control and Reinforcement Learning
IEEE Access, 2023 Finite-time Lyapunov exponents (FTLEs) provide a powerful approach to compute time-varying analogs of invariant manifolds in unsteady fluid flow fields.
Kartik Krishna +2 more
doaj +1 more source
Development and Demonstration of a TDOA-Based GNSS Interference Signal Localization System [PDF]
, 2012 Background theory, a reference design, and demonstration results are given for a Global Navigation Satellite System (GNSS) interference localization system comprising a distributed radio-frequency sensor network that simultaneously locates multiple ...
Bhatti, Jahshan A. +2 more
core +1 more source
TDOA Data Selection for Accurate Passive Coherent Location
, 2022 <p>This paper addresses the problem of selecting suitable time difference of arrival (TDOA) measurements for passive coherent location with multiple-transmitters/receivers. Firstly, we propose a unified mathematical framework for the following target location algorithms: spherical interpolation (SI), spherical intersection (SX), and nonlinearly ...
Marcello Campos +3 more
openaire +2 more sources
The 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
Lagrangian coherent structures in nonlinear dynamos [PDF]
, 2011 Turbulence and chaos play a fundamental role in stellar convective zones through the transportof particles, energy and momentum, and in fast dynamos, through the stretching, twisting and folding of magnetic flux tubes.
Balsara +7 more
core +2 more sources
WiFi-based PCL for monitoring private airfields [PDF]
, 2017 In this article, the potential exploitation of WiFi-based PCL systems is investigated with reference to a real-world civil application in which these sensors are expected to nicely complement the existing technologies adopted for monitoring purposes ...
BONGIOANNI, CARLO +4 more
core +1 more source
IEEE 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
Viscous evolution of point vortex equilibria: The collinear state [PDF]
, 2011 When point vortex equilibria of the 2D Euler equations are used as initial conditions for the corre- sponding Navier-Stokes equations (viscous), typically an interesting dynamical process unfolds at short and intermediate time scales, before the long ...
Aref H. +5 more
core +1 more source
Leida xuebao, 2016 In order to determine single-observer passive coherent locations using illuminators of opportunity, we propose a jointing angle and Time Difference Of Arrival (TDOA) Weighted Least Squares (WLS) location method.
Zhao Yongsheng +2 more
doaj +1 more source
PLoS 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