Omega System Availability as a Global Measure of Navigation Accuracy

Abstract

An augmented Omega System Availability model is presented in which system availability is treated as the probability that navigation accuracy is better than a selected threshold. In addition to the four sub-models used in connection with the previously developed System Availability Model, two new sub- models are presented which are needed for a probabilistic description of navigation accuracy as a measure of Omega system availability. One new sub-model describes the sources and statistical distribution of Omega phase errors, while the other sub-model defines the transformation of phase error to position error based on a generic method of Omega navigation commonly used in conventional airborne Omega navigation receiver systems. Resources required for the calculation of the system availability index based on the augmented model are estimated. Finally, as an alternative to the probabilistic model, a very simple GDOP-type form is proposed which could be included as a collective signal criterion in the current deterministic version of the PACE workstation. (rh)

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Document Details

Document Type
Technical Report
Publication Date
Sep 01, 1990
Accession Number
ADA229492

Entities

People

  • Peter B. Morris

Organizations

  • TASC, Inc

Tags

Communities of Interest

  • Air Platforms
  • Energy and Power Technologies
  • Space

DTIC Thesaurus Topics

  • Accuracy
  • Coast Guard
  • Data Science
  • Databases
  • Distribution Functions
  • Hyperbolic Navigation
  • Information Science
  • Mathematical Filters
  • Navigation
  • Probabilistic Models
  • Probability
  • Probability Density Functions
  • Probability Distributions
  • Random Variables
  • Reliability
  • Statistical Distributions
  • Statistics

Readers

  • Computational Modeling and Simulation
  • Positioning, Navigation, and Timing (PNT) Technology.