Research and Application of A Variable Step-size ALE Algorithm Used in Echo Detection of Active Sonar

DOI

10.2991/iiicec-15.2015.363How to use a DOI?

Keywords

ALE; Variable Step-size; LMS Algorithm; Echo Dectection.

Abstract

Narrow-band signal or CW pulse can be effectively detected by ALE algorithm. ALE based on LMS algorithm is widely used. The convergence speed and convergence accuracy of fixed step-size LMS algorithm is a pair of contradictions. The non-stationary data must be normalized before it is applied. The local reverberation background may be enhanced when the original data is normalized, so the echo detection is unfavorably affected. In order to solve the problem, a variable step-size LMS algorithm based on power estimation has been researched. Through the simulation and analysis of sea trial data, it is proven that reverberation background level can be reduced effectively using the variable step-size LMS algorithm. The output SNR of target echo can be enhanced by 8dB, the display quality can be effectively improved.

Copyright

© 2015, the Authors. Published by Atlantis Press.

Open Access

This is an open access article distributed under the CC BY-NC license (http://creativecommons.org/licenses/by-nc/4.0/).

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TY  - CONF
AU  - Linfeng Jiang
AU  - Shengzeng Zhou
AU  - Delong Sun
PY  - 2015/03
DA  - 2015/03
TI  - Research and Application of A Variable Step-size ALE Algorithm Used in Echo Detection of Active Sonar
BT  - Proceedings of the 2015 International Industrial Informatics and Computer Engineering Conference
PB  - Atlantis Press
SP  - 1651
EP  - 1656
SN  - 2352-538X
UR  - https://doi.org/10.2991/iiicec-15.2015.363
DO  - 10.2991/iiicec-15.2015.363
ID  - Jiang2015/03
ER  -