Underwater ultrasonic ranging by digital signal multiplexing with hadamard matrix

Author

Ebihara, Tadashi ; Nishimiya, Kojiro ; Mizutani, Keiichi ; Wakatsuki, Naoto ; Mizutani, Keiichi

Author_Institution

Grad. Sch. of Syst. & Inf. Eng., Univ. of Tsukuba, Tsukuba, Japan

fYear

2009

fDate

20-23 Sept. 2009

Firstpage

706

Lastpage

709

Abstract

In this paper, we propose a new signal processing method for underwater ranging systems, which is based on signal processing methods for wireless mobile communication, to improve SNR characteristics without an iterative measurement. We also evaluated the performance of the proposed method using a propagation simulation. The obtained results suggest that the proposed method can improve SNR characteristics from 1.0 to 3.5 dB, compared to conventional ranging methods.

Keywords

Hadamard matrices; acoustic signal processing; iterative methods; multiplexing; sonar; ultrasonic propagation; underwater acoustic propagation; Hadamard matrix; SNR characteristics; digital signal multiplexing; iterative measurement; propagation simulation; signal processing; underwater ranging system; underwater ultrasonic ranging; Acoustic measurements; Acoustic propagation; Electromagnetic propagation; Electromagnetic scattering; Oceans; Sea measurements; Signal processing; Ultrasonic variables measurement; Underwater acoustics; Underwater communication;

fLanguage

English

Publisher

ieee

Conference_Titel

Ultrasonics Symposium (IUS), 2009 IEEE International

Conference_Location

Rome

ISSN

1948-5719

Print_ISBN

978-1-4244-4389-5

Electronic_ISBN

1948-5719

Type

conf

DOI

10.1109/ULTSYM.2009.5442072

Filename

5442072