Results 241 to 250 of about 15,888,436 (292)
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Fusion of time delayed measurements with uncertain time delays
Proceedings of the 2005, American Control Conference, 2005., 2005In this paper we consider the problem of estimating the state of a dynamic system from a sequence of observations that are imprecisely timestamped. We argue that this problem can be addressed using the covariance union (CU) technique, and we demonstrate its application in a particular example.
Simon J. Julier, Jeffrey K. Uhlmann
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TIME-DELAYED FEEDBACK CONTROL OF TIME-DELAY CHAOTIC SYSTEMS
International Journal of Bifurcation and Chaos, 2003This paper addresses time-delayed feedback control (DFC) of time-delay chaotic systems. To extend the DFC approach to time-delay chaotic system, alter having been successfully used in chaotic systems without time-delays, the standard feedback control (SFC) method is firstly employed to show the main control technique in this paper based on one error ...
Xinping Guan +3 more
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Telemanipulation with Time Delays
The International Journal of Robotics Research, 2004In this paper we survey the development of the wave variable concept and examine wave-based teleoperation. We study the behavior of force reflecting systems under unknown but constant transmission delays, ranging from periods less than the human reaction time to several seconds.
Günter Niemeyer +1 more
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ICASSP '76. IEEE International Conference on Acoustics, Speech, and Signal Processing, 2005
A maximum likelihood (ML) estimator is derived for determining time delay between two signals observed in the presence of uncorrelated noise, under the assumptions of known signal and noise spectral characteristics. This ML estimator can be realized as a pair of receiver prefilters followed by a cross correlator.
G. Clifford Carter, Charles H. Knapp
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A maximum likelihood (ML) estimator is derived for determining time delay between two signals observed in the presence of uncorrelated noise, under the assumptions of known signal and noise spectral characteristics. This ML estimator can be realized as a pair of receiver prefilters followed by a cross correlator.
G. Clifford Carter, Charles H. Knapp
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Proceedings of the 41st IEEE Conference on Decision and Control, 2002., 2003
This note sketches an extension to systems with time delays of the decoupling technique developed by Clarke (1993) for generalized Bolza problems without delays. We indicate briefly how it can be used to derive necessary conditions for such problems.
Norma Ortiz, Peter R. Wolenski
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This note sketches an extension to systems with time delays of the decoupling technique developed by Clarke (1993) for generalized Bolza problems without delays. We indicate briefly how it can be used to derive necessary conditions for such problems.
Norma Ortiz, Peter R. Wolenski
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TIME DELAY AND INHOMOGENEITIES
The Ninth Marcel Grossmann Meeting, 2002Gravitational leasing plays an important role in studing the cosmological parameters, since propagation of light rays in curved spacetime is intrinsically connected to the structure of the universe. In particular,it depends also on the clumps of matter that it encounters on its way from the source to the observer...
de Ritis, R. +2 more
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Journal of Time Series Analysis, 1988
AbstractThe problem considered is that of estimating the delays that arise when a waveform propagates across an array. Problems that arise in previous estimation techniques when the signal‐to‐noise ratio is low are reduced by introducing an improved weighting of frequencies into the formulae and by using finite parameter models to estimate this weight ...
Hannan, E. J., Thomson, P. J.
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AbstractThe problem considered is that of estimating the delays that arise when a waveform propagates across an array. Problems that arise in previous estimation techniques when the signal‐to‐noise ratio is low are reduced by introducing an improved weighting of frequencies into the formulae and by using finite parameter models to estimate this weight ...
Hannan, E. J., Thomson, P. J.
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The time-delay graph and the delayogram - new visualizations for time delay
IEEE Signal Processing Letters, 2005For about 60 years, the spectrogram has been an excellent visualization tool for observing the acoustic and prosodic features of a speech signal. However, a visual tool has been lacking for information that is typically represented by the speech signal's phase.
Harvey F. Silverman, Joshua M. Sachar
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Stabilization by switching time-delay
Asymptotic Analysis, 2013In this paper we consider some stabilization problems for the wave equation with switching time-delay. We prove exponential stability results for appropriate damping coefficients. The proof of the main results is based on D'Alembert formula, observability inequality and some energy estimates.
Kais Ammari +2 more
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Time Delay in Random Scattering
SIAM Journal on Applied Mathematics, 1994Summary: This work treats the time delay in scattering for the Schrödinger equation with a random potential. The time delay is related to the energy derivative of the phase shift. In the white noise limit, the phase shift and time delay satisfy a system of stochastic differential equations.
William G. Faris, Woody J. Tsay
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