EFFECT OF ACCURACY LIMITATIONS IN THE AIRBORNE DIGITAL COMPUTER ON THE CONVERGENCE OF A STAGE WISE MIDCOURSE TRAJECTORY DETERMINATION PROCEDURE

Abstract

The effect of round-off errors on the estimation of position and velocity in midcourse navigation was analyzed. The analysis is based on Kalman's approach to linear filtering and prediction. Computation noise appears to be an additional random force in the dynamic system, and may affect both convergence and equilibrium of the sequential estimation procedure significantly. The analysis was applied to a satellite trajectory estimation system. Axes and area of the error ellipse (ellipse of concentration) were expressed in terms of word length, time interval between observations, and number of integration steps.

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Document Details

Document Type
Technical Report
Publication Date
Jun 01, 1963
Accession Number
AD0408673

Entities

People

  • A. Holick

Organizations

  • Hughes Aircraft Company

Tags

Communities of Interest

  • Air Platforms
  • Materials and Manufacturing Processes
  • Space

DTIC Thesaurus Topics

  • Artificial Satellites
  • Circular Orbits
  • Computational Science
  • Computations
  • Coordinate Systems
  • Differential Equations
  • Digital Computers
  • Equations Of Motion
  • Filters
  • Filtration
  • Linear Filtering
  • Mathematical Filters
  • Navigation
  • Orbits
  • Spacecraft
  • Trajectories
  • Vehicles

Readers

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

Technology Areas

  • Space