Enhanced multistatic active sonar signal processing

Kexin Zhao, Junli Liang, Johan Karlsson, Jian Li

Research output: Contribution to journalArticlepeer-review

22 Scopus citations

Abstract

Multistatic active sonar systems involve the transmission and reception of multiple probing sequences and can achieve significantly enhanced performance of target detection and localization through exploiting spatial diversity. This paper mainly focuses on two signal processing aspects of such systems, namely, enhanced range-Doppler imaging and improved target parameter estimation. The main contributions of this paper are (1) a hybrid dense-sparse method is proposed to generate range-Doppler images with both low sidelobe levels and high accuracy; (2) a generalized K-Means clustering (GKC) method for target association is developed to associate the range measurements from different transmitter-receiver pairs, which is actually a range fitting procedure; (3) the extended invariance principle-based weighted least-squares method is developed for accurate target position and velocity estimation. The effectiveness of the proposed multistatic active sonar signal processing techniques is verified using numerical examples.

Original languageEnglish
Pages (from-to)300-311
Number of pages12
JournalJournal of the Acoustical Society of America
Volume134
Issue number1
DOIs
StatePublished - Jul 2013
Externally publishedYes

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