Strapdown Navigation Algorithms Implemented in the Inertial and Geographic Frames

Abstract

This Canadian report presents two strapdown navigation software processing algorithms, one implemented in the inertial frame and the other in the local-level geographic frame. The presentation includes derivation of various mechanization equations to obtain positional and navigational information from input data provided by three gyros and accelerometers. Directional cosine matrix and quaternion update procedures together with initialization schemes are also presented. In the inertial frame implementation a new exact algorithm was derived to transform inertially referenced data into geographic coordinates. Simulation results of a C-141 race-track flight profile are presented to indicate the level of performance accuracy for the above two processing algorithms. Complete listings of software programs are also presented in the Appendices.

Open PDF

Document Details

Document Type
Technical Report
Publication Date
Sep 01, 1983
Accession Number
ADA148908

Entities

People

  • D. F. Liang
  • Richard H. Johnson

Organizations

  • Defence Research and Development Canada

Tags

Communities of Interest

  • Air Platforms
  • Sensors
  • Space
  • Weapons Technologies

DTIC Thesaurus Topics

  • Accelerometers
  • Accuracy
  • Angular Motion
  • Computations
  • Coordinate Systems
  • Directional
  • Guidance
  • Inertial Measurement Units
  • Inertial Navigation
  • Inertial Navigation Systems
  • Latitude
  • Navigation
  • Navigators
  • Simulations
  • Standards
  • Strapped Down Systems
  • Two Dimensional

Readers

  • Adaptive Control and Estimation with Uncertainty in Dynamic Systems.
  • Inertial Navigation Systems.