Results 21 to 30 of about 15,899,764 (275)

A comparative analysis of pulse time-of-arrival creation methods [PDF]

open access: yesAstronomy & Astrophysics, 2022
Context.Extracting precise pulse times of arrival (TOAs) and their uncertainties is the first and most fundamental step in high-precision pulsar timing. In the classical method, TOAs are derived from total intensity pulse profiles of pulsars via cross-correlation with an idealised 1D template of that profile.
J. Wang   +17 more
openaire   +7 more sources

Wave packet tunneling and imaginary wave vector dispersion

open access: yesPhysics Open, 2023
Dispersion associated with the complex band structure of a periodic potential can be used to explain single-electron wave packet tunneling through a finite-sized tunnel barrier.
Walter Unglaub, A.F.J. Levi
doaj   +1 more source

Optical fibre digital pulse-position-modulation assuming a Gaussian received pulse shape [PDF]

open access: yes
The abundance in bandwidth available in the best monomode fibres may be exchanged for improved receiver sensitivity by employing digital PPM. The paper presents a performance and optimisation analysis for a digital PPM coding scheme operating over a ...
Calvert, N.M.   +4 more
core   +5 more sources

Evaluation of Pulse Transit Time for Different Sensing Methodologies of Arterial Waveforms

open access: yesIEEE Access, 2023
We perform a novel comparative analysis between optically and mechanically derived pulse transit time (PTT) that is universally employed technique for cuffless blood pressure (BP) estimation.
Ghalib Muhammad Waqas Janjua   +4 more
doaj   +1 more source

A self-referenced in-situ arrival time monitor for X-ray free-electron lasers

open access: yesScientific Reports, 2021
We present a novel, highly versatile, and self-referenced arrival time monitor for measuring the femtosecond time delay between a hard X-ray pulse from a free-electron laser and an optical laser pulse, measured directly on the same sample used for pump ...
Michael Diez   +13 more
doaj   +1 more source

Estimation of pulse heights and arrival times [PDF]

open access: yesAutomatica, 1980
The problem is studied of estimating the arrival times and heights of pulses of known shape observed with white additive noise. The main difficulty is estimating the number of pulses. When a maximum likelihood formulation is employed for the estimation problem, difficulties similar to the problem of estimating the order of an unknown system arise.
openaire   +4 more sources

Pulse transit time measurement device and method [PDF]

open access: yes, 2018
Proposed is a Pulse Transit Time, PTT, measurement concept wherein a forced oscillation technique, FOT, is used to determine a pulse arrival time at alveoli of the lungs of a ...
Aelen, P.   +2 more
core   +3 more sources

Accuracy and User Acceptability of 24-hour Ambulatory Blood Pressure Monitoring by a Prototype Cuffless Multi-Sensor Device Compared to a Conventional Oscillometric Device

open access: yesBlood Pressure, 2023
Objective 24-hour ambulatory blood pressure monitoring (24ABPM) is state of the art in out-of-office blood pressure (BP) monitoring. Due to discomfort and technical limitations related to cuff-based 24ABPM devices, methods for non-invasive and continuous
Sondre Heimark   +11 more
doaj   +1 more source

Noninvasive and continuous blood pressure monitoring with better accuracy by combining pulse arrival time and peak delay

open access: yesInternational Journal of Distributed Sensor Networks, 2018
In this article, we propose a more accurate method to achieve noninvasive and continuous blood pressure monitoring with the aid of pulse arrival time and peak delay.
Yibin Li, Shengnan Li, Ning Deng
doaj   +1 more source

Radar Signal Deinterleaving in Electronic Warfare Systems: A Combined Approach

open access: yesIEEE Access, 2023
Traditional deinterleaving algorithms first cluster the pulses in frequency, pulse width, and angle of arrival parameter space. Then, they utilize time of arrival analysis techniques.
Mustafa Atahan Nuhoglu, Hakan Ali Cirpan
doaj   +1 more source

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