Capturing Uncertainty in the Common Tactical/Environmental Picture

Abstract

LONG-TERM GOALS. The long-term goal of this project is to characterize the uncertainty in active sonar performance due to the environment for antisubmarine warfare (ASW). As of fiscal year 2003 (FY03), the target transition has shifted from surface to air ASW. OBJECTIVES. Efforts in FY03 focused primarily on characterizing the statistical variability of signal excess (SE) due to environmental factors in the bottom and in the sound speed profile (SSP). We considered contributions to variability in the signal excess due to transmission loss (TL), mean reverberation level (RL), and target strength (TS). Stochastic variability in the sound speed profile was considered as the result of internal waves, while bottom variability was characterized in terms of bottom loss and bottom backscatter. The statistical model of signal excess was used to drive Metron s Likelihood Ratio Tracker (LRT), which performs Bayesian tracking for sensors modeling a sonobuoy field.

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Document Details

Document Type
Technical Report
Publication Date
Sep 30, 2003
Accession Number
ADA628110

Entities

People

  • Brian R. La Cour

Organizations

  • University of Texas at Austin

Tags

Communities of Interest

  • Ground and Sea Platforms
  • Sensors

DTIC Thesaurus Topics

  • Active Sonar
  • Antisubmarine Warfare
  • Broadband
  • Computational Science
  • Data Science
  • Frequency
  • Information Processing
  • Information Science
  • Internal Waves
  • Losses
  • Models
  • Probabilistic Models
  • Statistical Analysis
  • Statistical Distributions
  • Target Strength
  • Transmission Loss
  • Uncertainty

Readers

  • Acoustical Oceanography.

Technology Areas

  • AI & ML