Inertial Navigation Systems Aided by G.P.S.

Abstract

The present work is a Kalman filter study, in indirect feedback configuration, for a proposed integrated inexpensive Inertial Navigation System/Global Positioning System (I.N.S./G.P.S.). A one nautical mile per hour, local-level, two-accelerometer I.N.S. is used where the errors are represented by a 7 state linear model. G.P.S. is assumed to provide four range measurements from an equal number of satellites with the best relative position among those in view. I.N.S. error analysis showed error dependence on Schuler frequency and that it was possible to neglect Foucault modulation for navigation purposes. The present I.N.S./G.P.S. system has been shown to be quite effective since the navigation errors are reduced quickly for both short and long term periods without any divergence. (Author)

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Document Details

Document Type
Technical Report
Publication Date
Dec 01, 1982
Accession Number
ADA126689

Entities

People

  • Constantinos Christou Saflianis

Organizations

  • Naval Postgraduate School

Tags

Communities of Interest

  • Space
  • Weapons Technologies

DTIC Thesaurus Topics

  • Accelerometers
  • Artificial Satellites
  • Computational Science
  • Computer Programs
  • Computer Simulations
  • Differential Equations
  • Equations
  • Global Positioning Systems
  • Guidance
  • Inertial Navigation
  • Inertial Navigation Systems
  • Insensitive Explosives
  • Kalman Filters
  • Mathematical Filters
  • Navigation
  • Navigators
  • Random Variables

Fields of Study

  • Physics

Readers

  • Control Systems Engineering.
  • Inertial Navigation Systems.

Technology Areas

  • Space