Accession Number:

AD0777730

Title:

Comparison of Propagation Prediction Models with SUDS I Acoustic Data

Descriptive Note:

Corporate Author:

NAVAL UNDERSEA CENTER SAN DIEGO CA

Personal Author(s):

Report Date:

1974-04-01

Pagination or Media Count:

44.0

Abstract:

Analysis of the SUDS I data shows that there is reasonable agreement between fleet prediction models. Of 50 cases considered in this study, the operational model the current AMOS and the laboratory Rough Surface Natural Mode Model compared approximately the same in 24 cases with new surface duct measurements. In six cases, the AMOS had a better fit with experimental data, and in the remaining 21 cases the Natural Mode Model had a closer fit with the experimental data. Modified AMOS and ASRAP II provided reasonable predictions of sound propagation in the surface duct. Modified AMOS gave predictions in an below the duct, while ASRAP II was used only for in-duct predictions. The Virtual Mode Model needs the addition of the rough surface corrections that are part of the Natural Mode Model. The Natural Mode WAVE Model with rough surface corrections provided somewhat better predictions than the semiempirical propagation models.

Subject Categories:

  • Physical and Dynamic Oceanography
  • Acoustic Detection and Detectors
  • Acoustics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE