This paper presents the adaptation of the Cross Ambiguity Function Mapping (CAF- Mapping) algorithm for use in acoustics. The CAF-Mapping algorithm provides a useful means of generating a geographic visualization of acoustic data. Modifications of the algorithm for use in acoustics are explained, including use of acoustic modeling to generate propagation time differences, nonlinear grid spacing for frequency differences, location seeding using either three sensors or two sensors and two data samples, and frequency normalization. The algorithm allows discrimination between multiple acoustic signals with spatial or velocity vector variance. The presentation compares simulation results for several different types of data, then provides results that track a likely group of pygmy blue whale (Balaenoptera musculus brevicauda)using data from the Comprehensive Test Ban Treaty (CTBT) sensors off the coast of Australia. The author's affiliation with The MITRE Corporation is provided for identification purposes only and is not intended to convey or imply MITRE's concurrence with, or support for, the positions, opinions, or viewpoints expressed by the author. [Approved for Public Release; Distribution Unlimited Case 19-1301. Copyright 2019, The MITRE Corporation.]
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October 2019
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October 01 2019
Cross ambiguity function mapping of acoustic source tracks using Comprehensive Test Ban Treaty Data
David A. Lechner;
David A. Lechner
Mech. Eng., The Catholic Univ. of America, 9404 Bethany Pl., Washington, DC 20064, [email protected]
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Joseph F. Vignola;
Joseph F. Vignola
Mech. Eng., The Catholic Univ. of America, Washington, DC
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Shane Guan;
Shane Guan
Mech. Eng., The Catholic Univ. of America, Silver Spring, MD
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Diego Turo
Diego Turo
Mech. Eng., The Catholic Univ. of America, Washington, DC
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J. Acoust. Soc. Am. 146, 2849 (2019)
Citation
David A. Lechner, Joseph F. Vignola, Shane Guan, Diego Turo; Cross ambiguity function mapping of acoustic source tracks using Comprehensive Test Ban Treaty Data. J. Acoust. Soc. Am. 1 October 2019; 146 (4_Supplement): 2849. https://doi.org/10.1121/1.5136887
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