Waveform diversity based sonar system for target localization

Lijie Zhang; Jianguo Huang; Yong Jin; Yunshan Hou; Min Jiang; Qunfei Zhang

doi:10.3969/j.issn.1004-4132.2010.02.003

Waveform diversity based sonar system for target localization

Lijie Zhang, Jianguo Huang, Yong Jin, Yunshan Hou, Min Jiang, Qunfei Zhang

School of Marine Science and Technology

Research output: Contribution to journal › Article › peer-review

12 Scopus citations

Abstract

A new monostatic array system taking advantage of diverse waveforms to improve the performance of underwater target localization is proposed. Unlike the coherent signals between different elements in common active array, the transmitted signals from different elements here are spatially orthogonal waveforms which allow for array processing in the transit mode and result in an extension of array aperture. The mathematical derivation of Capon estimator for this sonar system is described in detail. And the performance of this orthogonal-waveform based sonar is analyzed and compared with that of its phased-array counterpart by water tank experiments. Experimental results show that this sonar system could achieve 12 dB-15 dB additional array gain over its phased-array counterpart, which means a doubling of maximum detection range. Moreover, the angular resolution is significantly improved at lower SNR.

Original language	English
Pages (from-to)	186-190
Number of pages	5
Journal	Journal of Systems Engineering and Electronics
Volume	21
Issue number	2
DOIs	https://doi.org/10.3969/j.issn.1004-4132.2010.02.003
State	Published - 26 Apr 2010

Keywords

Capon
Orthogonal signal transmission
Sonar
Target localization

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10.3969/j.issn.1004-4132.2010.02.003

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abstract = "A new monostatic array system taking advantage of diverse waveforms to improve the performance of underwater target localization is proposed. Unlike the coherent signals between different elements in common active array, the transmitted signals from different elements here are spatially orthogonal waveforms which allow for array processing in the transit mode and result in an extension of array aperture. The mathematical derivation of Capon estimator for this sonar system is described in detail. And the performance of this orthogonal-waveform based sonar is analyzed and compared with that of its phased-array counterpart by water tank experiments. Experimental results show that this sonar system could achieve 12 dB-15 dB additional array gain over its phased-array counterpart, which means a doubling of maximum detection range. Moreover, the angular resolution is significantly improved at lower SNR.",

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AU - Zhang, Lijie

AU - Huang, Jianguo

AU - Jin, Yong

AU - Hou, Yunshan

AU - Jiang, Min

AU - Zhang, Qunfei

PY - 2010/4/26

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Waveform diversity based sonar system for target localization

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Keywords

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