Results 211 to 220 of about 2,630,733 (260)
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Contrast Adaptation and Contrast Gain Control
Experimental Brain Research, 1991Electrophysiological measurements have shown that contrast adaptation can increase the contrast gain of cortical cells of the cat and the monkey. This implies that adaptation could enhance the contrast discrimination sensitivity. Psychophysical contrast discrimination experiments were performed with and without contrast adaptation.
Jan Koenderink
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1970 IEEE Symposium on Adaptive Processes (9th) Decision and Control, 1970
Communications and radar receivers of advanced design may utilize real time computers for signal processing. In such instances an adaptive learning scheme can be employed to optimize use of the receiver's dynamic range. An adaptive algorithm for statistically optimum AGC is derived in which the receiver gain is adjusted during the learning process so ...
Chia-pu Wang, Stephen Rappaport
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Communications and radar receivers of advanced design may utilize real time computers for signal processing. In such instances an adaptive learning scheme can be employed to optimize use of the receiver's dynamic range. An adaptive algorithm for statistically optimum AGC is derived in which the receiver gain is adjusted during the learning process so ...
Chia-pu Wang, Stephen Rappaport
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Proceedings of 1994 IEEE International Conference on Neural Networks (ICNN'94), 1994
We propose several neuron models featuring adaptive gain parameters in addition to the weights. These are shown to enhance learning speed on parity problems of various sizes. >
C.W. Codrington, M.F. Tenorio
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We propose several neuron models featuring adaptive gain parameters in addition to the weights. These are shown to enhance learning speed on parity problems of various sizes. >
C.W. Codrington, M.F. Tenorio
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Evaluation of the gain for an adaptive deconvolution smoother
Signal Processing, 1991Abstract A new approach to calculating the gain of an IIR adaptive deconvolution smoother is detailed. The method allows the gain to be calculated directly from the estimated parameters of the distorting channel.
A. J. Anderson, T. J. Moir
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On distributed high-gain adaptive stabilization
2019 IEEE 58th Conference on Decision and Control (CDC), 2019In this paper we consider adaptive distributed stabilization for uncertain multivariable linear systems with a time-varying diagonal matrix gain. We show that an unknown system matrix being an M-matrix is a sufficient condition to ensure uncertain linear systems to be stabilizable by matrix high gains, and derive a threshold condition to ensure ...
Zhiyong Sun 0001 +3 more
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Robustification of high gain adaptive control
2001 European Control Conference (ECC), 2001Adaptive controllers based on high gain feedback suffer from lack of robustness with respect to bounded disturbances. Existing modifications prevent the feedback gain from drifting, but introduce solutions that, even in the absence of disturbances, do not achieve regulation.
Polderman, J.W., Mareels, I.M.Y.
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Gain optimization for adaptive optics systems
Proceedings of the 2003 American Control Conference, 2003., 2004This paper presents an optimization procedure for selecting the best controller gain for an adaptive optics system. The procedure uses an ARX identification of the open loop atmospheric data to model the atmospheric effects and sensor noise. The closed loop system incorporates the adaptive optics system dynamics, the identified atmosphere model and the
Looze, DP, Merritt, N
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Adaptive Bayesian Channel Gain Cartography
2018 IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP), 2018Channel gain cartography relies on sensor measurements to construct maps providing the attenuation profile between arbitrary transmitter-receiver locations. Existing approaches capitalize on tomographic models, where shadowing is the weighted integral of a spatial loss field (SLF) depending on the propagation environment.
Donghoon Lee 0005 +2 more
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Adaptive Gain Compensator for a Recycle Process
Proceedings of the 2005 IEEE International Symposium on, Mediterrean Conference on Control and Automation Intelligent Control, 2005., 2005In the presented paper, dynamic state analysis and control aspects of recycle processes are discussed. Analysis of process dynamic behaviour and investigation of influence of process recycle loop parameters onto the overall plant is carried out. A new strategy of compensation of the recycle effects is introduced as a combination of direct compensator ...
Alois Meszaros +3 more
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Gain Margins of Adaptive Control Systems
IEEE Transactions on Automatic Control, 2010This paper presents a systematic study of the gain margins (GM) of adaptive control systems: the specification of the parameter range of a control gain matrix in a designed adaptive control system for maintaining the desired closed-loop signal boundedness and asymptotic tracking performance.
Qian Sang, Gang Tao
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