Results 211 to 220 of about 103,288 (249)
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Optimal pseudorandom pulse position modulation ladar waveforms
Applied Optics, 2015An algorithm for generating optimal pseudorandom pulse position modulation (PRPPM) waveforms for ladar ranging is presented. Bistatic ladar systems using Geiger-mode avalanche photodiodes require detection of several pulses in order to generate sufficient target statistics to satisfy some detection decision rule.
David U, Fluckiger +2 more
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Optimal Recognition Of Neural Waveforms
Proceedings of the Annual International Conference of the IEEE Engineering in Medicine and Biology Society Volume 13: 1991, 2005The investigation of biological neural networks requires reliable classification of neural action potentials in extracellular recordings. When the signal-to-noise ratio is bw, when the spike waveforms gradually change shape and amplitude, or when spikes overlap, the current sorting techniques cannot provide robust on-line operation due to their noise ...
I.N. Bankman, K.O. Johnson, W. Schneider
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MRI gradient waveform design by numerical optimization
Magnetic Resonance in Medicine, 1993AbstractThis manuscript describes a method of gradient waveform design by nonlinear constrained optimization. Methods of formulation and solution of the waveform optimization problem are briefly described for minimization of root mean squared current and minimization of waveform moments.
O P, Simonetti, J L, Duerk, V, Chankong
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Peripheral nerve stimulation‐optimal gradient waveform design
Magnetic Resonance in Medicine, 2014PurposeModern magnetic resonance imaging scanners with high‐performance gradient systems have high maximum gradient strength (Gmax) and slew rate (Smax). Peripheral nerve stimulation (PNS) is often a more limiting factor for gradient waveform design than Gmax and Smax.
Rolf F, Schulte, Ralph, Noeske
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2014
Abstract A confluence of steady advances in radar enabling technologies, and ever increasing demands on radar performance in challenging environments, has afforded a re-examination of the fundamental theoretical framework upon which classical waveform design is based.
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Abstract A confluence of steady advances in radar enabling technologies, and ever increasing demands on radar performance in challenging environments, has afforded a re-examination of the fundamental theoretical framework upon which classical waveform design is based.
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Spatially irregular space-waveform coded CPFSK with full rank optimized waveforms
2009 IEEE 20th International Symposium on Personal, Indoor and Mobile Radio Communications, 2009A nonlinear modulation, the constant envelope CPM class being of particular interest, has multi-dimensional signal waveforms. We introduce a spatial code for multi-antenna CPFSK system using a different waveform (constellation) space on each antenna.
Jan Sykora, Kamil Anis
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Optimal waveform for detecting rank-one targets in waveform-dependent interference
Proceedings of 2011 IEEE CIE International Conference on Radar, 2011The design of optimal waveform for enhanced detection of rank-one targets is addressed. Rather than simultaneous design of waveform and matched filter maximizing the clutter-plus-noise ratio (SCNR), we design the optimal waveform maximizing the probability of detection under the Neyman-Pearson (NP) criterion.
null Xiaobo Deng, null Xiaoming Li
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Phase Retrieval for Radar Waveform Optimization
IEEE Transactions on Aerospace and Electronic Systems, 2012An important problem in radar waveform optimization is the synthesis of discrete time constant modulus signals from Fourier magnitude data. Iterative algorithms for solving this problem have been proposed in the literature, but the algorithms are only applicable in limited cases, and the convergent behavior of these algorithms has not been established.
Lee K. Patton, Brian D. Rigling
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Waveform geometry dictating optimal cruising in animals
Journal of The Royal Society InterfaceFor sustained swimming and flights, vertebrates and insects oscillate their propulsors periodically within a narrow range of Strouhal number (St), a dimensionless quantity describing the rate and density of the motion, suggesting a close relationship between the range and cruising optimality.
Kazuko Yoshizawa, Ryosuke Motani
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