MULTIFREQUENCY ACOUSTICAL-HOLOGRAPHY

被引：29

作者：

ERMERT, H

KARG, R

机构：

[1] Department of High-Frequency Engineering at the University of Erlangen-Nürnberg, Erlangen West Germany

[2] Brown Boveri Reseach Center, Baden, Switzerland

来源：

IEEE TRANSACTIONS ON SONICS AND ULTRASONICS | 1979年 / 26卷 / 04期

关键词：

D O I：

10.1109/T-SU.1979.31101

中图分类号：

O42 [声学];

学科分类号：

070206 ; 082403 ;

摘要：

A theoretical and experimental investigation of a multifrequency holographic imaging method in the acoustic region is dealt with. The fundamental relations for reconstructing a multifrequency hologram are given. The ambiguity function of the imaging system is discussed with special reference to the resolving power in the wide-band imaging signal. The results are ratified by experiments. Acoustic images of typical object arrangements show that object structures can usually be satisfactorily recognized by only using a wide-band technique. The investigations demonstrate that the multifrequency holographic imaging system has a much better axial resolution than usual holographic systems. Experimentally. B-scan-type images of sectional planes were obtained by using a linear aperture. Copyright © 1979 by The Institute of Electrical and Electronics Engineers, Inc.

引用

页码：279 / 286

页数：8