Elliptical-Tukey chirp signal for high-resolution, air-coupled ultrasonic imaging

被引：41
|
作者：
Pallav, Prakash [1 ]
Gan, Tat Hean [1 ]
Hutchins, David A. [1 ]
机构：
[1] Univ Warwick, Sch Engn, Coventry CV4 7AL, W Midlands, England
来源：
IEEE TRANSACTIONS ON ULTRASONICS FERROELECTRICS AND FREQUENCY CONTROL | 2007年 / 54卷 / 08期
关键词：
D O I：
10.1109/TUFFC.2007.423
中图分类号：
O42 [声学];
学科分类号：
070206 ; 082403 ;
摘要：
A new signal processing method, which uses a modified chirp signal for air-coupled ultrasonic imaging, is described. A combination of the elliptical and Tukey window functions has been shown to give a better performance than the Harming windowing used in most pulse-compression algorithms for air-coupled applications. The elliptical-Tukey chirp signal provides an improvement in both the resolution of images and signal-to-noise ratios. In addition, this type of signal also reduces the level of signal voltages required to drive the source transducer while maintaining the performance of the system. This approach, thus, may have wide interest in all forms of wide bandwidth ultrasonic imaging.
引用
收藏
页码：1530 / 1540
页数：11
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