Journal of Zhejiang University SCIENCE C

, Volume 11, Issue 4, pp 261–269 | Cite as

Optimized simulated annealing algorithm for thinning and weighting large planar arrays

  • Peng Chen
  • Bin-jian Shen
  • Li-sheng Zhou
  • Yao-wu Chen
Article

Abstract

This paper proposes an optimized simulated annealing (SA) algorithm for thinning and weighting large planar arrays in 3D underwater sonar imaging systems. The optimized algorithm has been developed for use in designing a 2D planar array (a rectangular grid with a circular boundary) with a fixed side-lobe peak and a fixed current taper ratio under a narrow-band excitation. Four extensions of the SA algorithm and the procedure for the optimized SA algorithm are described. Two examples of planar arrays are used to assess the efficiency of the optimized method. The proposed method achieves a similar beam pattern performance with fewer active transducers and faster convergence ability than previous SA algorithms.

Key words

Simulated annealing (SA) Sparse planar arrays 3D underwater sonar imaging Beam pattern Optimization 

CLC number

TB56 

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Copyright information

© “Journal of Zhejiang University Science” Editorial Office and Springer-Verlag Berlin Heidelberg 2010

Authors and Affiliations

  • Peng Chen
    • 1
  • Bin-jian Shen
    • 2
  • Li-sheng Zhou
    • 2
  • Yao-wu Chen
    • 1
  1. 1.Institute of Advanced Digital Technologies and InstrumentationZhejiang UniversityHangzhouChina
  2. 2.Hangzhou Applied Acoustics Research InstituteHangzhouChina

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