Forward scatter target strength extraction in a marine environment (L)
| Autor: | Harry J. Simpson, Brian H. Houston, Larry A. Kraus, Angie Sarkissian, J. A. Bucaro |
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| Rok vydání: | 2011 |
| Předmět: |
Geologic Sediments
Sound Spectrography Time Factors Acoustics and Ultrasonics Forward scatter Oceans and Seas Acoustics Transducers Signal Spherical shell Motion Optics Arts and Humanities (miscellaneous) Wavenumber Computer Simulation Target strength Physics Fourier Analysis business.industry Numerical Analysis Computer-Assisted Signal Processing Computer-Assisted Equipment Design Filter (signal processing) Sound Line (geometry) Underwater acoustics business |
| Zdroj: | The Journal of the Acoustical Society of America. 129:3453-3456 |
| ISSN: | 0001-4966 |
| DOI: | 10.1121/1.3589251 |
| Popis: | A 48 m rail with a moving receiver was used to measure forward scattering from a spherical shell lying on the bottom in the Gulf of Mexico. The target was mid-way between the source and rail, on a line from the source bisecting the rail. The major obstacle to the measurement of forward scattering is the much stronger source signal which overlaps the scattered signal in space and time. Here, forward scattered target strength is obtained by processing the received signals using a wavenumber filter to remove the incident wave. The result compares favorably to that obtained from numerical predictions. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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