Results 71 to 80 of about 5,131 (237)
Monitoring and assessment for obstructive sleep apnea
FlexMat, EarlyView.This review systematically classifies Obstructive Sleep Apnea (OSA) monitoring indicators into three categories: physical, biochemical, and electrophysiological indicators, and lists several methods for each category. Abstract Obstructive sleep apnea (OSA) is a common chronic sleep‐disordered breathing disease characterized by recurrent upper airway ...
Yaowen Xu +6 more
wiley +1 more source
Development and Implementation of the Hyperbolic Pretracker [PDF]
, 2011 This report details the progress made on the design and implementation of a hyperbolic pretracker specifically for the Envisat RA-2 altimeter. First considerable care was taken to construct a waveform simulator whose characteristics matched those of the ...
Quartly, Graham
core
Synthetic aperture radar demonstration kit for signal processing education [PDF]
, 2007 A Synthetic Aperture Radar scale model has been developed to improve signal processing teaching. Based on low frequency ultrasound transmission, it is a low cost demonstration kit.
Chaumette, Eric +9 more
core +1 more source
Neural Networks & Machine Learning in Cognitive Radar
, 2022 S.2074-2079This paper reports on how neural networks and machine learning can support the development of cognitive radar systems. We discuss the aspects of cognition that can be supported by neural networks, review the recent literature on the use of ...
Smith, Graeme E. +3 more
core +1 more source
Non‐Uniform Programmable Photonic Waveguide Meshes
Laser &Photonics Reviews, EarlyView.Integrating defect cells into uniform hexagonal waveguide meshes overcomes the fundamental spectral and temporal limitations of programmable photonics. By leveraging the Vernier effect through non‐uniform coupled cavities, this architecture achieves a tenfold increase in free spectral range and ultra‐fast sampling times, paving the way for next ...
Cristina Catalá‐Lahoz, José Capmany
wiley +1 more source
Orthogonal Waveforms for Multistatic and Multifunction Radar [PDF]
, 2012 Modern radar include more and more multiple functions and multiple channels as in the case of MPAR (Multifunction Phased Array Radar) and MIMO (Multiple Input Multiple Output) radar. In this context sophisticated waveforms and related processing (
De Franco, A +5 more
core
Noise radar technology: Pseudorandom waveforms and their information rate [PDF]
, 2014 The well-known LPI (Low Probability of Intercept) and antispoofing capabilities of some radar waveforms as well some other desirable feature such as a low sidelobes level of their autocorrelation function can be enhanced by “tailored” pseudo-random ...
Francesco De Palo +8 more
core +1 more source
Laser &Photonics Reviews, EarlyView.This work demonstrates a high‐fidelity stability transfer from an optical reference to a high‐repetition‐rate microcomb using a mode‐locked laser bridge. By employing electro‐optic sampling timing detection, femtosecond‐level synchronization and 10−18‐level fractional frequency stability are achieved.
Changmin Ahn +4 more
wiley +1 more source
Ambiguity and area preserving linear transformations in over‐the‐horizon radar
IET Radar, Sonar & NavigationThe use of recurrent waveforms in over‐the‐horizon radar (OTHR) necessitates techniques for ambiguity resolution and manipulation. This paper provides a number of techniques for manipulating the shape of radar ambiguity functions.
Stephen D. Howard, Van Khanh Nguyen
doaj +1 more source
Performances of Multitones for Ultra-Wideband Software-Defined Radar
IEEE Access, 2017 From the literature review, it is apparent that there is a gap in quantifying the performances of multitone waveforms specifically for radar applications and experimental results not commonly found. This paper focuses on the radar performance analysis of
Julien Le Kernec, Olivier Romain
doaj +1 more source