The Effects of Environmental Assessment on Model-Data Transmission Loss Agreement from Sea Trial Q290

Abstract

The DRDC Atlantic sea trial Q290 provided an opportunity to measure and modeltransmission loss in a shallow-water environment. The transmission loss measurementsgathered, along with a complete set of environmental measurements, are used to testDRDC Atlantics Rapid Environmental Assessment capability and determine the extent towhich Rapid Environmental Assessment can improve propagation predictions overpredictions predicated on previously perceived parameters. It is found that in this trialenvironment, using in situ measurements of bathymetry and sound speed, as input to arange-dependent Gaussian beam model, provide a better fit to measured transmission loss by2-3 dB even over quite short (less than 8 km) ranges as compared to historical data fromstandard databases. The neglect or misestimate of other parameters, including wind speedand bottom type, can also result in large inaccuracies in model predictions of transmissionloss and sonar performance.

Open PDF

Document Details

Document Type
Technical Report
Publication Date
Mar 01, 2006
Accession Number
AD1005161

Entities

People

  • Jeff Scrutton
  • Paul C. Hines
  • Sean P. Pecknold
  • Victor Young

Tags

Communities of Interest

  • Energy and Power Technologies
  • Ground and Sea Platforms

DTIC Thesaurus Topics

  • Bathymetry
  • Bottom Loss
  • Classification
  • Data Transmission
  • Databases
  • Environment
  • Environmental Assessment
  • Losses
  • Matched Filters
  • Measurement
  • Optical Lattices
  • Security
  • Shallow Water
  • Sonar
  • Standards
  • Transmission Loss
  • Water

Readers

  • Acoustical Oceanography.
  • Canine Service Warrior Training Program for Wounded Warriors in the Veterinary Industry, Supported by Donors.
  • Computational Modeling and Simulation