Underwater acoustic imaging by wideband signal

Author

Tang, Jinsang ; Jiang, Xingzhou ; Li, Jiangnan

Author_Institution

Inst. of Acoust., Acad. Sinica, Beijing, China

Volume

2

fYear

1998

fDate

1998

Firstpage

1443

Abstract

This paper discusses the image reconstruction of underwater objects by large time-bandwidth product acoustic signals or wideband signals. It is shown that the principle of imaging by wideband signal is generalized range-Doppler imaging. This paper shows that the signal with wideband ambiguity function of the `thumbtack type´ is the optimum waveform for imaging for time scales very close to 1, and a digital simulation is used to verify it. The resolution ability of the imaging is analyzed. Finally the differences between the wideband imaging and synthetic aperture sonar are discussed

Keywords

Doppler effect; image reconstruction; image resolution; sonar imaging; underwater sound; generalized range-Doppler imaging; image reconstruction; imaging resolution; large time-bandwidth product acoustic signals; optimum waveform; thumbtack type function; underwater acoustic imaging; underwater objects; wideband ambiguity function; wideband signal; Acoustic imaging; Acoustic scattering; Doppler radar; Image resolution; Narrowband; Signal processing; Signal resolution; Synthetic aperture sonar; Underwater acoustics; Wideband;

fLanguage

English

Publisher

ieee

Conference_Titel

Signal Processing Proceedings, 1998. ICSP '98. 1998 Fourth International Conference on

Conference_Location

Beijing

Print_ISBN

0-7803-4325-5

Type

conf

DOI

10.1109/ICOSP.1998.770892

Filename

770892