نتایج جستجو برای: correlation

تعداد نتایج: 390680  

2003
Russell Mason Francis Rumsey

In order to undertake controlled investigations into perceptual effects that relate to the interaural cross-correlation coefficient, experiment stimuli that meet a tight set of criteria are required. The requirements of each stimulus are that it is narrow band, normally has a constant cross-correlation coefficient over time, and can be altered to cover the full range of values of cross-correlat...

2017
Rui-Sheng Jia Yue Gong Yan-Jun Peng Hong-Mei Sun Xing-Li Zhang Xin-Ming Lu

Microseismic signals are generally considered to follow the Gauss distribution. A comparison of the dynamic characteristics of sample variance and the symmetry of microseismic signals with the signals which follows α-stable 10 distribution, reveals that the pulse characteristics of the microseismic signal is outstanding and that the probability density curve of the microseismic signal is approx...

2015
Mohamed Rafi

In this letter, we address the issue of determining the number of speakers from multispeaker speech signals collected simultaneously using a pair of spatially separated microphones. The spatial separation of the microphones results in time delay of arrival of speech signals from a given speaker. The differences in the time delays for different speakers are exploited to determine the number of s...

2014
Nestor Yague-Martinez Ulrich Balss

The German TerraSAR-X and TanDEM-X satellites are able to acquire images operationally in ScanSAR and WideScanSAR modes and experimentally in TOPS mode. This paper gives an overview of the interferometric processing steps of burst-mode acquisitions, emphasizing the importance of the co-registration stage. A coregistration approach based on incoherent cross-correlation is presented. Interferomet...

2008
Martin Durant

We have conducted optical and X-ray simultaneous observations of SWIFT J1753.5−0127 with RXTE and ULTRACAM, while the system persisted in its relatively bright low/hard state. In the cross-correlation function (CCF), we find that the optical leads the X-rays by a few seconds with a broad negative peak, and has a smaller positive peak at positive lags. This is markedly different from what was se...

1996
Kenneth M. Dawson-Howe

A prototype active surveillance system is presented. The system has two cameras, one of which is rigidly xed & has a wide angle lenses while the other is mounted on a pan-tilt head & has a zoomed lenses. The images from the wide angle camera are analyzed using dynamic background subtraction together with normalized cross correlation in order to identify moving people within the scene. An approx...

2012
K. Nirala

In this study spatial-temporal speckle correlation techniques have been applied for the quality evaluation of three different Indian fruits namely apple, pear and tomato for the first time. The method is based on the analysis of variations of laser light scattered from biological samples. The results showed that crosscorrelation coefficients of biospeckle patterns change subject to their freshn...

2006
PAUL G. RICHARDS FELIX WALDHAUSER DAVID SCHAFF WON-YOUNG KIM

We compare traditional methods of seismic event location, based on phase pick data and analysis of events one-at-a-time, with a modern method based on cross-correlation measurements and joint analysis of numerous events. In application to four different regions representing different types of seismicity and monitored with networks of different station density, we present preliminary results ind...

2013

This document provides a detailed discussion of the mathematical theory behind how the VSRT Interferometer works, and how it simulates a modern cross-correlation interferometer that professional radio astronomers use. This discussion, in general, is not intended for students. Instructors are advised to read this and decide for themselves whether their students would benefit from such a discussi...

2013
A. Ahmad S. Al-Busaidi

Cyclic cross-correlation function between image pairs of maximal length pseudo-random binary sequences is studied. It is found that the peak of the cross-correlation remains constant for every possible image pairs of the sequences of the same length. However, this unique property is not valid for all the other possible pairs.

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