NASA NTRS · 19790015288
Satellite-tracking and earth-dynamics research programs
Abstract
The activities carried out by the Smithsonian Astrophysical Observatory (SAO) for the National Aeronautics and Space Administration (NASA) during the period 1 July to 31 December 1978 are described. All four SAO laser sites were in routine operation during the reporting period; they obtained a 6-month total of 182,529 range observations on 3610 passes.
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1979-05-01. Satellite-tracking and earth-dynamics research programs. https://ntrs.nasa.gov/citations/19790015288
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