World-wide estimate of gravity field was combined with estimate of geoid based on astrogeodetic data covering 19% of earth and with secular and long period variations of 1957 and 1958 Beta satellite orbits, into generalization of least-squares adjustments taking correlation into account; value obtained indicated that variance and covariance should be increased about 44%.
Geoid and world geodetic system based on combination of gravimetric, astrogeodetic, and satellite data
NASA -- Tech Note
1961
23 pages
Report
English
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