Polar Motion through 1977 from Doppler Satellite Observations.

Abstract

Doppler observations of Navy navigation satellites have been used to compute pole positions on a daily basis since 1969. Limited results exist for the period 1964 to 1969. Based on Doppler observations from four or five satellities, the standard error for a five-day mean pole position is less than 20 cm. Comparisons are made between BIH, IPMS, and ILS results and those obtained from Doppler. It is shown that the six years of reliable Doppler data from 1972 on contribute little in finding the Chandler period. Using observations from the three astronomical sources over 12 years yields a Chandler period of 432.0 plus or minus 0.2 days. (Author)

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Document Details

Document Type
Technical Report
Publication Date
Feb 01, 1979
Accession Number
ADA067861

Entities

People

  • Claus Oesterwinter

Organizations

  • Naval Surface Warfare Center Dahlgren Division

Tags

Communities of Interest

  • Space

DTIC Thesaurus Topics

  • Agreements
  • Angular Acceleration
  • Artificial Satellites
  • Astronautics
  • Astronomical Observatories
  • Computations
  • Computer Programs
  • Coordinate Systems
  • Data Analysis
  • Data Reduction
  • Differential Equations
  • Navigation
  • Navigation Satellites
  • Observation
  • Observatories
  • Satellite Orbits
  • Stations

Fields of Study

  • Environmental science

Readers

  • Positioning, Navigation, and Timing (PNT) Technology.
  • Space Exploration and Orbital Mechanics.

Technology Areas

  • Space