Abstract
Doppler observations of Navy Navigation Satellites have been used to comput pole positions on a daily basis since 1969. Limited computations have been performed using data on file for the period 1964–1969. Results of recent computations give a standard error in pole position based on 48 hours of Doppler observations of 7 cm. However, effects of errors in the orbit due to uncertainties in the gravity field prevent the attainment of this precision; the standard deviation of pole position for this time span is 60 cm, giving a standard error for a five day mean based on observations of two satellites of 25 cm.
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References
R.J. ANDERLE, “Determination of Polar Motion from Satellite Observations”,Geophysical Surveys 1 147–161, 1973.
R.J. ANDERLE, “Transformation of Terrestrial Survey Data to Doppler Satellite Datum”,Journal of Geophysical Research, Vol 79, No. 35, 5319–5331, 10 December 1974.
R.J. ANDERLE, “Long Term Consistency in Positions of Sites Determined from Doppler Satellite Observations”,Naval Surface Weapons Center, Dahlgren Laboratory Technical Report TR-3433, November 1975.
R.J. ANDERLE, “Error Model for Geodetic Positions Derived from Doppler Satellite Observations”,Bull. Geod., 50, 43–11, 1976.
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Anderle, R.J. Polar motion determined by Doppler satellite observations. Bull. Geodesique 50, 377–390 (1976). https://doi.org/10.1007/BF02521590
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DOI: https://doi.org/10.1007/BF02521590