Eliminating the tunnel effect in multi-beam bathymetry sonar by using the recursive least square-Laguerre lattice algorithm

被引：0
|
作者：
Wei Y.-K. [1 ]
Weng N.-N. [1 ]
Li H.-S. [1 ]
Yao B. [1 ]
Zhou T. [1 ]
机构：
[1] National Laboratory of Underwater Acoustic Technology, Harbin Engineering University
来源：
Harbin Gongcheng Daxue Xuebao/Journal of Harbin Engineering University | 2010年 / 31卷 / 05期
关键词：
Multi-beam bathymetry sonar; RLS-Laguerre lattice algorithm; Side lobe interference; Tunnel effect;
D O I：
10.3969/j.issn.1006-7043.2010.05.001
中图分类号：
学科分类号：
摘要：
The tunnel effect causes potentially dangerous bathymetric artifacts in multi-beam bathymetric sonar data. To rectify this, its causes were analyzed and its mechanism of production in multi-beam bathymetry sonar determined. Side lobe interference was found to be an important factor causing the tunnel effect. The emergence of the tunnel effect can lead to multi-beam bathymetry sonar mistaking an area of relatively flat seafloor for horizontal half cylindrical terrain with concave up. Based on priori errors on algorithm performance, the influence of pole choice on error feedback in the recursive least square (RLS) Laguerre lattice algorithm was simulated with a system identifying model. Experimental data from lakes in which the tunnel effect was presented was processed using the RLS-Laguerre lattice algorithm. The results showed that the algorithm, through the choice of Laguerre pole, can effectively eliminate side lobe interference in edge beams and speed up actual seafloor returns. It also better retains the signal energy of the central beam, reducing effects on the real signal.
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页码：547 / 552
页数：5
相关论文
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