UNCERTAINTY IN THE ESTIMATE OF POSITION AND VELOCITY ALONG A LUNAR TRAJECTORY USING INDIVIDUAL EARTH-MOON ANGULAR MEASUREMENTS IN A RECURSIVE NAVIGATION THEORY

Abstract

The purpose of the study is to determine the feasibility of using a recursive navigation theory in which individual earthmoon angular measurements (fixes) are processed as they are made and combined with the current best estimate of position and velocity to produce an improved estimate. Estimates made with an earth-moon fix interval of 5 minutes or less are compared to estimates made with conventional earth-star, moon-star fixes of 15 minutes. Results show the earth-moon fix to be a feasible technique.

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Document Details

Document Type
Technical Report
Publication Date
Jun 01, 1964
Accession Number
AD0603956

Entities

People

  • Donald R. Hefty
  • Paul J. Ellmer

Organizations

  • Air Force Institute of Technology

Tags

Communities of Interest

  • Weapons Technologies

DTIC Thesaurus Topics

  • Accuracy
  • Air Force
  • Computer Programming
  • Computer Programs
  • Computers
  • Coordinate Systems
  • Flight Paths
  • Guidance
  • Lunar Trajectories
  • Measurement
  • Measuring Instruments
  • Navigation
  • Parking Orbits
  • Space Navigation
  • Spacecraft
  • Time Intervals
  • Trajectories

Readers

  • Geodesy
  • Space Exploration and Orbital Mechanics.

Technology Areas

  • Space
  • Space - Orbital Debris
  • Space - Space Objects