| Autor: |
Cockrell KL; Department of Mechanical Engineering, Massachusetts Institute of Technology, 77 Massachusetts Avenue, Cambridge, Massachusetts 02139, USA. cockrell@mit.edu, Schmidt H |
| Jazyk: |
angličtina |
| Zdroj: |
The Journal of the Acoustical Society of America [J Acoust Soc Am] 2010 May; Vol. 127 (5), pp. 2780-9. |
| DOI: |
10.1121/1.3337223 |
| Abstrakt: |
The waveguide invariant principle is used to estimate the range to a broadband acoustic source in a shallow-water waveguide using a single acoustic receiver towed along a path directly toward the acoustic source. A relationship between the signal processing parameters and the ocean-acoustic environmental parameters is used to increase the effective signal-to-noise ratio without requiring detailed knowledge of the environment. Heuristics are developed to estimate the minimum source bandwidth and minimum horizontal aperture required for range estimation. A range estimation algorithm is tested on experimental and simulated data for source ranges of 500-2200 m and frequencies from 350 to 700 Hz. The algorithm is accurate to within approximately 25% for the cases tested and requires only a minimal amount of a priori environmental knowledge. |
| Databáze: |
MEDLINE |
| Externí odkaz: |
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