Interdigital single-side inclined weighted surface acoustic wave Morlet wavelet processor

Abstract

The invention discloses an interdigital single-side inclined weighted surface acoustic wave type Morlet wavelet processor which comprises a piezoelectric substrate, one end of the piezoelectric substrate is provided with a transmitting transducer, and the other end of the piezoelectric substrate is provided with a receiving transducer. An input electric signal is added to the transmitting transducer, after wavelet transformation is carried out on the input electric signal, the transmitting transducer outputs a surface acoustic wave type wavelet transformation signal, and the surface acoustic wave type wavelet transformation signal is transmitted to the receiving transducer. And when the receiving transducer receives the surface acoustic wave type wavelet transform signal, the surface acoustic wave type wavelet transform signal is converted into an electric signal type wavelet transform signal to be output. And the transmitting transducer adopts an interdigital single-side inclined weighting mode. The invention has the advantages of good function of suppressing beam deviation, diffraction and body wave and simple design. The method is widely applied to various fields of sensors, radars, seismic exploration, atmosphere and ocean analysis and the like.

Description

Interdigitated Unilateral Tilt Weighted SAW Morlet Wavelet Processor technical field The present invention relates to a kind of interdigital unilateral inclination weighted type surface acoustic wave type Morlet wavelet processor, belong to acoustic surface The technical field of wavelet wavelet transform processor. Background technique [0002] The wavelet transform is a major breakthrough in mathematics following the Fourier transform. Wavelet transform can provide a random The frequency-changing "time-frequency" window can automatically adapt to the requirements of time-frequency signal analysis, so that it can focus on any part of the signal. detail. Wavelet analysis is an ideal tool for signal time-frequency analysis and processing, especially for the vast majority of practical applications. The analysis and processing of unsteady signals and fractal structure signals have been developed in many fields such as applied mathematics and engineering science, and obt...

AI Technical Summary

Problems solved by technology

This finger-envelope weighted wavelet transform processor has problems of beam deviation, diffraction and body wave

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