Abstract
For geoacoustic inversion using the tow-ship noise received on a towed horizontal line array (HLA), one of the issues is speed and accuracy of the forward model. Is the normal mode good enough or is ray propagation adequate for modeling short-range forward propagation? Earlier work [Kuperman et al., IEEE J. Oceanic Eng. 10 (1985)] showed that the continuum contribution arrives at beams far away from the forward directions. For practical applications, such contributions are often neglected to minimize interference from undesired sources. We examine in this paper the same issue (the importance of high angle arrivals at short range) in both the time and beam domain in the context of several bottom models (templates). Note that the high angle arrival contributions depend on the bottom type, the source–receiver range, the towed array aperture/spacing and the acoustic frequencies. The results of this analysis will shed light on the requirement of forward models at short ranges on a HLA. [Work supported by ONR.]
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
