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Layout-optimized Cylindrical Sonar Arrays Jan Egil Kirkeb, Andreas Austeng and Sverre Holm

Summary: Layout-optimized Cylindrical Sonar Arrays
Jan Egil KirkebÝ, Andreas Austeng and Sverre Holm
Department of Informatics, University of Oslo
P.O. Box 1080, Blindern, N-0316 Oslo, Norway
Corresponding author: janki@ifi.uio.no
Abstract-- The cost of sonars scales to the number of active
elements. Therefore, it is favorable to reduce the number of
elements without loss in imaging quality. This is a combinatorial
problem, but of such a large dimension, even for small arrays,
that an exhaustive search is futile.
In this work, we have found layout-optimized sparsed cyl-
indrical arrays, i.e. arrays with binary weights. In underwater
applications, with demands for omni-directional imaging, cyl-
indrical arrays have shown to have beneficial qualities, and are
commonly used in fishery.
We have found that to optimize the layout of the cylindrical
array it is sufficient to optimize a small sub-array. With a
reasonable number of elements in the elevation direction, finding
the optimal array is then possible through an exhaustive search.
The cylindrical array was then sparsed so that each line of


Source: Austeng, Andreas - Institutt for Informatikk, Universitetet i Oslo


Collections: Computer Technologies and Information Sciences