Results 41 to 50 of about 17,683 (224)

Research on radar task scheduling with power constraint

open access: yesThe Journal of Engineering, 2019
Aiming at the task-scheduling problem of phased array radar subject to low probability of intercept (LPI), the radar radiation power constraint and power agility features are analysed.
Yong-Kun Wang, Shi-You Zheng
doaj   +1 more source

Bearing estimation of low probability of intercept sources via polynomial matrices and sparse linear arrays

open access: yesIET Radar, Sonar & Navigation, 2021
Recent years have seen a steady convergence of Radar and Communications band Radio Frequency (RF) transceiver systems. Not only have Communications systems colonised large swathes of previously allocated Radar bands but there is also a convergence of ...
William Coventry   +3 more
doaj   +1 more source

Mutual interference and low probability of interception capabilities of noise radar

open access: yesIET Radar, Sonar & Navigation, 2008
Recently, there has been considerable interest in noise radar over a wide spectrum of applications, such as through-wall surveillance, tracking, Doppler estimation, polarimetry, interferometry, ground penetrating or subsurface profiling, detection, synthetic aperture radar (SAR) imaging, inverse SAR imaging, foliage penetration imaging etc.
T. Thayaparan   +2 more
openaire   +1 more source

Critical rainfall conditions for the initiation of torrential flows: results from the Rebaixader catchment (Central Pyrenees) [PDF]

open access: yes, 2016
Torrential flows like debris flows or debris floods are fast movements formed by a mix of water and different amounts of unsorted solid material. They generally occur in steep torrents and pose high risk in mountainous areas.
Abanco Martínez de Arenzana, Claudia   +3 more
core   +2 more sources

Deep learning-based LPI radar signals analysis and identification using a Nyquist Folding Receiver architecture

open access: yesDefence Technology, 2023
Nyquist Folding Receiver (NYFR) is a perceptron structure that realizes a low probability of intercept (LPI) signal analog to information. Aiming at the problem of LPI radar signal receiving, the time domain, frequency domain, and time-frequency domain ...
Tao Wan, Kai-li Jiang, Hao Ji, Bin Tang
doaj   +1 more source

Empirical fitting of forward backscattering models for multitemporal retrieval of soil moisture from radar data at L-band [PDF]

open access: yes, 2017
A multitemporal algorithm, originally conceived for the C-band radar aboard the Sentinel-1 satellite, has been updated to retrieve soil moisture from L-band radar data, such as those provided by the National Aeronautics and Space Administration Soil ...
Fascetti, Fabio   +2 more
core   +2 more sources

Style analysis in real estate markets: beyond the sectors and regions dichotomy [PDF]

open access: yes, 2009
While style analysis has been studied extensively in equity markets, applications of this valuable tool for measuring and benchmarking performance and risk in a real estate context are still relatively new. Most previous real estate studies on this topic
Fuerst, Franz, Marcato, Gianluca
core   +1 more source

1D Convolutional Neural Networks Versus Automatic Classifiers for Known LPI Radar Signals Under White Gaussian Noise

open access: yesIEEE Access, 2020
In this study we analyze the signal classification performances of various classifiers for deterministic signals under the additive White Gaussian Noise (WGN) in a wide range of signal to noise ratio (SNR) levels (-40dB to +20dB).
Alper Yildirim, Serkan Kiranyaz
doaj   +1 more source

A Virtual Clinical Trial of Psychedelics to Treat Patients With Disorders of Consciousness

open access: yesAdvanced Science, EarlyView.
Disorders of consciousness after severe brain injury are marked by reduced complexity of brain activity and limited treatment options. Using personalized whole‐brain models, this study shows that simulated lysergic acid diethylamide (LSD) and psilocybin shift patient brain dynamics closer to criticality.
Naji L.N. Alnagger   +17 more
wiley   +1 more source

Real‐Time and Rapid Dynamic Missile Identification Utilizing a TiOx Memristor Array

open access: yesAdvanced Intelligent Systems, EarlyView.
Real‐time missile target identification is demonstrated using an artificial intelligence model based on step‐weighted long–short‐term memory networks and a TiOx memristor array. The approach classifies five projectile types with enhanced early‐stage prediction through data augmentation and custom training strategies. Achieving 94.4% accuracy, the model
Mingyu Kim, Gwanyeong Park, Gunuk Wang
wiley   +1 more source

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