Underwater Signal Analysis in the Modulation Spectrogram with Time-Frequency Reassignment Technique

被引：3
|
作者：
Cho, Hyunjin [1 ]
Kim, Wan Jin [2 ]
Hong, Wooyoung [3 ]
机构：
[1] Republ Korea Naval Acad, Jinhae, South Korea
[2] Add, Jinhae, South Korea
[3] Sejong Univ, Seoul, South Korea
来源：
IEICE TRANSACTIONS ON FUNDAMENTALS OF ELECTRONICS COMMUNICATIONS AND COMPUTER SCIENCES | 2019年 / E102A卷 / 11期
关键词：
modulation spectrogram; reassignment; underwater signal;
D O I：
10.1587/transfun.E102.A.1542
中图分类号：
TP3 [计算技术、计算机技术];
学科分类号：
0812 ;
摘要：
Modulation spectrogram is effective for analyzing underwater signals which consist of tonal and modulated components. This method can analyze the acoustic and modulation frequency at the same time, but has the trade-off issue of time-frequency localization. This letter introduces a reassignment method for overcoming the localization issue in conventional spectrograms, and then presents an alignment scheme for implementing modulation spectrogram. Relevant experiments show improvement in acoustic frequency estimation perspective and an increment in analyzable modulation frequency range.
引用
收藏
页码：1542 / 1544
页数：3
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