Optimal Transform Order of Fractional Fourier Transform for Decomposition of Overlapping Ultrasonic Signals

被引：4
|
作者：
Lu, Zhenkun [1 ,2 ]
Yang, Cui [2 ]
Wei, Gang [2 ]
机构：
[1] Wuzhou Univ, Guangxi Wuzhou 543002, Peoples R China
[2] S China Univ Technol, Sch Elect & Informat Engn, Guangzhou 510641, Guangdong, Peoples R China
来源：
IEICE TRANSACTIONS ON FUNDAMENTALS OF ELECTRONICS COMMUNICATIONS AND COMPUTER SCIENCES | 2014年 / E97A卷 / 01期
基金：
中国国家自然科学基金;
关键词：
fractional Fourier transform; separation; overlapping; ultrasonic; echoes; SEPARATION;
D O I：
10.1587/transfun.E97.A.393
中图分类号：
TP3 [计算技术、计算机技术];
学科分类号：
0812 ;
摘要：
The separation time-overlapping ultrasound signals is necessary to obtain accurate estimate of transit time and material properties. In this letter, a method to determine the optimal transform order of fractional Fourier transform (FRFT) for decomposition of overlapping ultrasonic signals is proposed. The optimal transform order is obtained by minimizing the mean square error (MSE) between the output and the reference signal. Furthermore, windowing in FRFT domain is discussed. Numerical simulation results show the performances of the proposed method in separating signals overlapping in time.
引用
收藏
页码：393 / 396
页数：4
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