Ocean acoustic waveguide invariant parameter estimation using tonal noise sources
Andrew Harms, Jonathan L. Odom, Jeffrey L. Krolik
Abstract
The abundance of shipping noise sources in ocean littoral zones provides a great opportunity to estimate ocean environmental parameters. The waveguide invariant parameter β, defined as the ratio of inverse group and phase velocities between modes, has been used in a variety of applications including ranging of passive sources. Previous work utilizing the waveguide invariant in passive sonar has relied on processing the time-frequency intensity striations of broadband sources. In this paper, the reception of strong tonal components from transiting commercial ships of known location (e.g., from AIS data) are used for estimating β over the source-receiver path. A maximum likelihood estimate of β is derived by relating the fading characteristics of different tonal components over range. The method is verified on simulated data using a Pekeris waveguide model.
BibTeX
@inproceedings{icassp2015_oceanacousticwav,
title = {Ocean acoustic waveguide invariant parameter estimation using tonal noise sources},
author = {Andrew Harms and Jonathan L. Odom and Jeffrey L. Krolik},
booktitle = {ICASSP 2015},
year = {2015}
}