UACE2017 Proceedings: Modelling bottom scattering and target echoes from data collected during the 2013 Target and Reverberation Experiment

Session:
Sonar performance modeling and verification - Applications to active and passive sonar
Paper:
Modelling bottom scattering and target echoes from data collected during the 2013 Target and Reverberation Experiment
Author(s):
Dale Ellis
Abstract:
During the 2013 Target and Reverberation Experiment (TREX13) reverberation and echo data were collected using a fixed source and fixed horizontal array deployed in shallow water in the Gulf of Mexico. Various pulses in the 1.8 to 3.6 kHz band were sent, day and night over a 6-week period, and an extensive analysis of the reverberation data made (J. Yang et al., IEEE J. Oceanic Engineering, Special TREX13 issue, 2017). Modelling efforts (Ellis et al., IEEE J. Oceanic Engineering, Special TREX13 issue, 2017) concentrated on analysis of reverberation and estimation of scattering strengths using a range-dependent adiabatic-mode reverberation model. For that work, the bottom scattering assumed a Lambert scattering coefficient. Here, that work is extended to handle other scattering functions. In addition, an initial attempt is made to model the strength of echoes of LFM pulses from fixed scattering objects, a towed echo repeater, and the tow ship itself. [Work supported by the US Office of Naval Research].
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