Measurement of interstation phase velocity by wavelet transformation
نویسندگان
چکیده
منابع مشابه
Wavelet Transformation
Wavelet transformation is one of the most practical mathematical transformations in the field of image processing, especially image and signal processing. Depending on the nature of the multiresolution analysis, Wavelet transformation become more accessible and powerful tools. In this paper, we refer to the mathematical foundations of this transformation. Introduction: The...
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In this paper, the problem of one-dimensional (1-D) velocity estimation is addressed, using two-dimensional (2D) spatiotemporal orientation estimation. A new frequency estimator based on a least square plane fitting of the estimated autocorrelation phase has been previously developed and is applied here to random textured images for the problem of velocity estimation. This algorithm requires th...
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According to the shortcomings of the existing ultrasonic wind velocity measurement device, for instance, complexity of circuit and difficulty of signal processing, a new ultrasonic wind velocity measurement is put forward based on phase discrimination and a new sensor configuration as well. Thus, a system model is built. Firstly, an equilateral triangle should be constituted by an ultrasonic em...
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ژورنال
عنوان ژورنال: Earthquake Science
سال: 2009
ISSN: 1674-4519,1867-8777
DOI: 10.1007/s11589-009-0425-3