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Arrival Times of Satellite-Broadened Laser Pulses

IEEE Transactions on Aerospace and Electronic Systems, 1976
A method for measuring the time of arrival of very narrow laser pulses which have been reflected and randomly broadened by a target is examined. It is known that these return pulses from the target have very small rise times. A threshold detection algorithm that detects the rising edge of the pulse is used for obtaining the pulse arrival times.
exaly   +2 more sources

Randomization of the start pulse in time-of-arrival correlators

Review of Scientific Instruments, 1989
Correlators based on the measurement of the time of arrival of photoelectron pulses are subject to a start-pulse bias related to the method according to which the pulse that triggers the count sequence is selected. For the bias to be negligible, the count rate must be low or the coherence time of the fluctuating signal must be short.
L. Basano, P. Ottonello
openaire   +1 more source

Statistics of pulse arrival time in turbulent media

Journal of the Optical Society of America, 1980
The arrival time of an electromagnetic or optical pulse as observed by a fixed observer can be defined by the first temporal moment or the “time centroid” of the pulse. After propagating through a random medium, this pulse arrival time becomes a random variable and will fluctuate about some mean value.
C. H. Liu, K. C. Yeh
openaire   +1 more source

Detection and arrival time estimation of a pulsed sinusoid

PACRIM. 2005 IEEE Pacific Rim Conference on Communications, Computers and signal Processing, 2005., 2005
A novel double-FFT method is presented for the computationally efficient detection and time-of-arrival (TOA) estimation of a pulsed sinusoid. Starting from the time samples x(n), the first FFT produces X(k), whose magnitude is summed for detection.
Y.T. Chan, B.H. Lee, R. Inkol, F. Chan
openaire   +1 more source

Pulse arrival time is not an adequate surrogate for pulse transit time in terms of tracking diastolic pressure

2011 Annual International Conference of the IEEE Engineering in Medicine and Biology Society, 2011
We compared pulse arrival time (PAT) and pulse transit time (PTT) in terms of their ability to track diastolic pressure (DP). We performed the comparison using high fidelity, invasive arterial waveforms recorded from six dogs during multiple interventions. On average, DP ranged from 40 to 106 mmHg and therefore varied widely.
Guanqun Zhang   +3 more
openaire   +3 more sources

Estimation of Time of Arrival for Rectangular Pulses

IEEE Transactions on Aerospace and Electronic Systems, 1984
We consider the performance of the maximum likelihood estimator (MLE) for the time of arrival of a rectangular pulse in additive white Gaussian noise. Upper and lower bounds are derived for the mean square error. These bounds are tight for both medium and large energy-to-noise ratios.
openaire   +1 more source

Pulse Arrival Time Distributions

2012
The shape of the radio wavefront can be probed with pulse arrival time measurements in individual antennas. So far, the radio wavefront has not been investigated in detail. It does not necessarily have to follow the shape of the particle front (pancake), since the radio emission arises as a coherent sum over the entire shower development.
openaire   +1 more source

The pulse wave arrival time (QKd interval) in normal children

The Journal of Pediatrics, 1979
The interval between the onset of QRS of the electrocardiogram and the arrival of the pulse wave at the brachial artery, as detected by the appearance of Korotkoff sounds at diastolic pressure (QKd), provides a measure of a pulse wave arrival time, i.e., the sum of the pre-ejection period and a pulse transmission time.
B B, Bercu   +3 more
openaire   +2 more sources

Improved Rise Approximation Method for Pulse Arrival Timing

IEEE Transactions on Nuclear Science, 2019
This paper describes the deduction of pulse arrival times from digital waveforms recorded with a multichannel data-acquisition (DAQ) system. A linear rise approximation (LRA) arrival timing method provides restricted timing resolution for pulses with nonlinear rise.
L. Jokhovets   +11 more
openaire   +1 more source

A generalized target description and pulse time-of-arrival estimation

Conference Record of The Twenty-Ninth Asilomar Conference on Signals, Systems and Computers, 2002
An iterative method that combines a parametric channel model with the maximum likelihood and cross-correlation estimation techniques has been developed to estimate the reflection, creeping wave, and times-of-arrival from an echo emanating from a rigid acoustic sphere. The modeled echo is assumed to have a generalized form, i.e., it is more complex than
A.B. Doser, P.A. Delaney
openaire   +1 more source

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