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47
Submitted to the P. A. S. P. Combining Undersampled Dithered Images
, 1998
"... Undersampled images, such as those produced by the HST WFPC2, misrepresent finescale structure intrinsic to the astronomical sources being imaged. Analyzing such images is difficult on scales close to their resolution limits and may produce erroneous results. A set of “dithered ” images of an astr ..."
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Cited by 3 (0 self)
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of the Fourier transforms of a set of undersampled dithered images. This method works by algebraically eliminating the high order satellites in the periodic transforms of the aliased images. The reconstructed image is an exact representation of the dataset with no loss of resolution at the Nyquist scale
IMECE200581374 EFFECT OF WAVEFORM ON THE EFFECTIVENESS OF TANGENTIAL DITHER FORCES TO CANCEL FRICTIONINDUCED OSCILLATIONS
"... ABSTRACT Highfrequency dither forces are often used to reduce unwanted vibration in frictional systems. This paper examines how the effectiveness of these dithercancellation techniques is influenced by the type of periodic signal employed. The paper uses the method of averaging as well as numeric ..."
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ABSTRACT Highfrequency dither forces are often used to reduce unwanted vibration in frictional systems. This paper examines how the effectiveness of these dithercancellation techniques is influenced by the type of periodic signal employed. The paper uses the method of averaging as well
Appendix D: Theoretical Analysis Of Uwb Signals Using Binary PulseModulation And Fixed TimeBase Dither
"... this report. The calculated power spectral densities and examples showing how the analytical results compare to measurements are given below. The analytical results presented in this section are taken from [1]. Fixed timebase dithered UWB systems utilize short duration pulses transmitted at some no ..."
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nominal pulse period T. In this scheme, pulses are dithered about integer multiples of T. In the following discussion, it is assumed that the dither times are random variables 2 that are independent and identically distributed n over a fraction of the nominal pulse period with probability density q(2
Transient Turbulent Flow Simulation with Water Model Validation and Application to Slide Gate Dithering
"... Slide gate dithering can reduce nozzle clogging and sticking during continuous casting, but also influences transient flow in the mold and meniscus level fluctuations. In this work, a semianalytical model was first developed and validated to predict nozzle flow rate from slidegate opening position ..."
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injection rate and bubble size calculated with a porousflow nozzlerefractory model, and steel flow rate calculated using the gatepositionbased model. The transient simulation shows liquid steel jet wobbling and periodic gasrich pockets entering the mold region during dithering. The mold level
Fictitious Play in 3 × 3 Games: the transition between periodic and chaotic behaviour
, 2009
"... In the 60’s Shapley provided an example of a two player fictitious game with periodic behaviour. In this game, player A aims to copy B’s behaviour and player B aims to play one ahead of player A. In this paper we generalize Shapley’s example by introducing an external parameter. We show that the per ..."
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Cited by 6 (1 self)
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that the periodic behaviour in Shapley’s example at some critical parameter value disintegrates into unpredictable (chaotic) behaviour, with players dithering a huge number of times between different strategies. At a further critical parameter the dynamics becomes periodic again, but now both players aim to play
occur along the path. The phase and magnitude of the signal are represented by X(j) at the pulse generator output connector, and Y
"... this report. The calculated power spectral densities and examples showing how the analytical results compare to measurements are given below. The analytical results presented in this section are taken from [1]. Fixed timebase dithered UWB systems utilize short duration pulses transmitted at some no ..."
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nominal pulse period T. In this scheme, pulses are dithered about integer multiples of T. In the following discussion, it is assumed that the dither times are random variables 2 that are independent and identically distributed n over a fraction of the nominal pulse period with probability density q(2
Description of limit cycles in sigmadelta modulators
 IEEE Transactions on Circuits and SystemsI: Regular Papers
, 2005
"... Abstract—A mathematical framework, based on statespace modeling, for the description of limit cycles (LCs) of 1bit sigma–delta modulators (SDMs) is presented. It is proved that periodicity in bit output pattern of the SDM implies a periodic orbit in statespace variables. While the statespace des ..."
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Cited by 15 (5 self)
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Abstract—A mathematical framework, based on statespace modeling, for the description of limit cycles (LCs) of 1bit sigma–delta modulators (SDMs) is presented. It is proved that periodicity in bit output pattern of the SDM implies a periodic orbit in statespace variables. While the state
HP Laboratories Israel*
, 1999
"... color halftoning, dithering, barycentric coordinates. Monochrome dither halftoning is a grayscale image rendering procedure where graylevels in an image are compared against a periodic threshold array, placing a Black dot in every location whose graylevel is smaller than the corresponding thresho ..."
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color halftoning, dithering, barycentric coordinates. Monochrome dither halftoning is a grayscale image rendering procedure where graylevels in an image are compared against a periodic threshold array, placing a Black dot in every location whose graylevel is smaller than the corresponding
A Comparative Study of CarrierFrequency Modulation Techniques for Conducted EMI
 Suppression in PWM Converters,” IEEE Transactions on Industrial Electronics
, 2002
"... Abstract—A rigorous mathematical analysis and a comparative study of carrierfrequency modulation (CFM) techniques for the conducted electromagnetic interference (EMI) suppression in pulsewidthmodulated converters is presented. CFM techniques dither the switching period with a small amplitude varia ..."
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Cited by 7 (0 self)
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Abstract—A rigorous mathematical analysis and a comparative study of carrierfrequency modulation (CFM) techniques for the conducted electromagnetic interference (EMI) suppression in pulsewidthmodulated converters is presented. CFM techniques dither the switching period with a small amplitude
Architectures for Phase Variation Compensation in AFR Control
"... AbstractTo counteract the binary nature of an exhaust gas oxygen sensor and to improve the efficiency of a three way catalyst, the delivered fueling quantity is typically dithered around stoichiometry for gasoline internal combustion engines. Determining whether the switching sensor reads rich or ..."
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AbstractTo counteract the binary nature of an exhaust gas oxygen sensor and to improve the efficiency of a three way catalyst, the delivered fueling quantity is typically dithered around stoichiometry for gasoline internal combustion engines. Determining whether the switching sensor reads rich
Results 11  20
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47