Affiliation:
1. Huaiyin Institute of Technology
2. Nanchang Hangkong University
Abstract
Frequency response character of ultrasonic transducer often influences on the test signal partly, and then test errors arise. To the problem, a compact method is proposed to calibrate the frequency response in this paper. The experiment data was obtained in water- immerging test of the transducers, and a discrete transfer function is established based on system identification algorithms and then used for transducer calibration. The method is validated effective by experiment. Not only can the characteristic of transducers be indicated, but also a referenced method is presented for calibrating frequency response of LTI system.
Publisher
Trans Tech Publications, Ltd.
Reference12 articles.
1. Yuan Y.Q., Ultrasonic transducer, Nanjing: Nanjing University Press, (1992).
2. Chandrana C., Kharin N.A., Nair A. et al., High resolution fundamental and harmonic imaging using a MEMS fabricated ultrasonic transducer,. 2007 IEEE Ultrasonics Symposium, 28-31 Oct. 2007, New York, NY, USA, 1183-1187.
3. Benenson Z.M., Elizaroy A.B., Yakovleva T.V. et al., Approach to 3-D ultrasound high resolution imaging for mechanically moving large-aperture transducer based upon Fourier transform,. IEEE Transactions on Ultrasonics, Ferroelectrics and Frequency Control, 2002, 49(12), 1665-1685.
4. Parks T W，Burrus C S，Digital filter design，NY：John wiley and sons，1987.
5. Hu G.S., Digital Signal Processing Theory, Algorithm and implementation, Beijing: Tsinghua university press, (2003).