Improved space time prewhitener for linear frequency modulation reverberation using fractional Fourier transform

Ruhang Wang, Jianguo Huang, Tian Ma, Qunfei Zhang

Research output: Contribution to journalArticlepeer-review

10 Scopus citations

Abstract

This letter presents an improved space time prewhitening method for linear frequency modulation (LFM) reverberation. The proposed method transforms the reverberation to fractional Fourier domain to whiten using fractional Fourier transform. The linear varying frequency in LFM reverberation is focused on a stationary frequency, and the adjacent block signal is used as the reference signal of prewhitening. Finally, experiment results with real reverberation data verify that the proposed method improves the detection performance of active sonar in shallow sea significantly.

Original languageEnglish
Pages (from-to)EL361-EL365
JournalJournal of the Acoustical Society of America
Volume128
Issue number6
DOIs
StatePublished - Dec 2010

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