High-frequency (8-16 kHz) model-based source localization

Matched-field or model-based processing has now been widely demonstrated for improving source localization and detection in ocean waveguides. Most of the processing approaches become increasingly sensitive to fluctuations or uncertainties as the frequency increases. As a result, there has been very limited work above 1 kHz and there is a perception that above several kilohertz the technique cannot be applied. We have conducted acoustic communications experiments in a variety of shallow water sites around coastal areas of the United States. These experiments show that a clear multipath structure is readily observed even in the 8–16 kHz band. Furthermore, it is shown that model-based processing can then be exploited to localize sources at these high frequencies out to ranges of several kilometers.

[1]  Scott C. Daubin,et al.  Source localization using the PE method , 1985 .

[2]  Sergio M. Jesus,et al.  Exploiting reliable features of the ocean channel response , 1997 .

[3]  E. D. Lowe,et al.  A performance comparison of four noise background normalization schemes proposed for signal detection systems , 1984 .

[4]  Michalopoulou.  Matched-impulse-response processing for shallow-water localization and geoacoustic inversion , 2000, The Journal of the Acoustical Society of America.

[5]  Sergio M. Jesus,et al.  Broadband matched-field processing of transient signals in shallow water , 1993 .

[6]  H. Bucker.  Use of calculated sound fields and matched‐field detection to locate sound sources in shallow water , 1976 .

[7]  W. Hodgkiss,et al.  Source localization with broad-band matched-field processing in shallow water , 1996 .

[8]  Paul Hursky,et al.  Model-based tracking for autonomous arrays , 2001, MTS/IEEE Oceans 2001. An Ocean Odyssey. Conference Proceedings (IEEE Cat. No.01CH37295).

[9]  William S. Hodgkiss,et al.  Broadband matched‐field processing , 1993 .

[10]  Michael B. Porter,et al.  SOURCE TRACKING IN THE HUDSON CANYON EXPERIMENT , 1996 .

[11]  M. B. Porter.  Acoustic models and sonar systems , 1993 .

[12]  C. S. Clay,et al.  Reproducibility of signal transmissions in the ocean , 1965 .

[13]  Antares Parvulescu,et al.  Signal Detection in a Multipath Medium by M.E.S.S. Processing , 1961 .

[15]  W. Kuperman,et al.  Spatial resolution of time-reversal arrays in shallow water , 2000 .

[16]  M.B. Porter,et al.  SignalEx: linking environmental acoustics with the signaling schemes , 2000, OCEANS 2000 MTS/IEEE Conference and Exhibition. Conference Proceedings (Cat. No.00CH37158).

[17]  W. R. Hahn.  Optimum signal processing for passive sonar range and bearing estimation , 1975 .

[18]  Evan K. Westwood.  Broadband matched‐field source localization , 1992 .

[19]  David P. Knobles,et al.  Source track localization via multipath correlation matching , 1997 .

[20]  Arthur B. Baggeroer,et al.  An overview of matched field methods in ocean acoustics , 1993 .

[21]  Peter M. Schultheiss,et al.  Passive Ranging in Multipath Dominant Environments: Part II-Unknown multipath parameters , 1993, IEEE Trans. Signal Process..

[22]  Ross Williams,et al.  Coherent Recombination of Acoustic Multipath Signals Propagated in the Deep Ocean , 1971 .

[23]  Michael B. Porter,et al.  BROADBAND SOURCE LOCALIZATION IN THE GULF OF MEXICO , 1996 .

[24]  N. Owsley,et al.  Time delay estimation in a sensor array , 1981 .

[25]  D. Jackson,et al.  Phase conjugation in underwater acoustics , 1991 .