Results 201 to 210 of about 3,629,334 (242)
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Science, 2011
Coordination between various instruments provides a real-time aspect to observing transient astrophysical events.
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Coordination between various instruments provides a real-time aspect to observing transient astrophysical events.
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Time-domain tests for Gaussianity and time-reversibility
IEEE Transactions on Signal Processing, 1994Statistical signal processing algorithms often rely upon Gaussianity and time-reversibility, two important notions related to the probability structure of stationary random signals and their symmetry. Parametric models obtained via second-order statistics (SOS) are appropriate when the available data is Gaussian and time-reversible.
Georgios B. Giannakis +1 more
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Optical time domain reflectometer
Applied Optics, 1977By using an optical time domain reflectometer a new measurement technique which allows displaying the length dependence of the fiber attenuation by analyzing backscattered light has been developed. This paper compares the backscatter and insertion-loss techniques.
M K, Barnoski +3 more
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Time-domain Oustaloup approximation
2015 20th International Conference on Methods and Models in Automation and Robotics (MMAR), 2015Paper presents a new method for implementing Oustaloup approximation of non-integer order systems in digital environment. Classical method and its limitations are presented and discussed. Method of realization is formulated and schemes for discretization are presented. Operation of method is illustrated with two examples.
Jerzy Baranowski +4 more
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Analysis of accumulated timing-jitter in the time domain
IEEE Transactions on Instrumentation and Measurement, 1998This paper deals with the effects of accumulated timing-jitter on the signal-to-noise ratio (SNR) of real sine waves. Such a problem was recently investigated by the author, using the discrete-Fourier method. However, the frequency-domain analysis has some limitations due to the fact that some of the accumulated timing-jitter noise power, found at the ...
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Time domain right invertibility
2006 American Control Conference, 2006Generalized systems (also called implicit, descriptor, etc.) usually offer more possibilities for solving control and observation problems. In this context, we use an important tool of System Theory, namely right invertible systems. In this paper we consider some possible dualizations results on time domain left invertibility and point out which ...
Moisés E. Bonilla +2 more
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On frequency-domain and time-domain phase unwrapping
Proceedings of the IEEE, 1987Time-domain phase unwrapping of analytic or complex functions of time is an unavoidable operation when processing such signals within an FM-modeling framework or when attempting to establish the instantaneous frequency of such signals. With the help of an alternate derivation of his equations, Tribolet's frequency-domain phase unwrapping algorithm is ...
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Conversion of frequency-domain data to the time domain
Proceedings of the IEEE, 1986The advantages and disadvantages of three different algorithms for transforming frequency-domain data to the time domain are reviewed. The algorithms are a direct computation of the Fourier series, the fast Fourier transform, and the chirp-z transform.
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Nonlinear time-domain modeling by multiresolution time domain (MRTD)
IEEE Transactions on Microwave Theory and Techniques, 1997A multiresolution time-domain (MRTD) scheme based on the expansion in scaling functions is applied to the modeling of nonlinear pulse propagation. Appropriate absorbers for the MRTD scheme are presented and their performance is discussed. The differences using pulse functions and nonlocalized basis functions like the Battle-Lemarie scaling functions ...
M. Krumpholz, H.G. Winful, L.P.B. Katehi
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Edge magnetoplasmons in the time domain
Physical Review B, 1992We have studied edge magnetoplasmons (EMP's) created by pulses of 100 ps width in a high-mobility two-dimensional electron gas, using a cryogenic transistor. We find that magnetoplasmon motion along the edge occurs only in the direction expected for negatively charged electrons; there is no hint of propagation in the opposite direction expected for ...
, Ashoori +4 more
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