The estimation of the Earth's gravity field

Details The estimation of the Earth's gravity field The estimation of the Earth's gravity field

Jun 1986

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1986eegf.book.....s&link_type=abstract

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Mathematics

1

Earth Gravitation, Earth Planetary Structure, Geopotential, Gravimetry, Gravitational Fields, Gravity Anomalies, Gravity Gradiometers, Mathematical Models, Altimeters, Artificial Satellites, Data Processing, Estimates, High Altitude, Models, Satellite Tracking

Scientific paper

The various methods for the description of the Earth's gravity field from direct and/or indirect observations are reviewed. Geopotential models produced by various organizations and in use during the past 15 years are discussed in detail. Recent and future programs for the improvement of global gravity fields are reviewed and the expected improvements from new observation and data processing techniques are estimated. The regional and local gravity field is also reviewed. The various data types and their spectral properties, the sensitivities of the different gravimetric quantities to datatypes are discussed. The techniques for the estimation of gravimetric quantities and the achievable accuracies are presented (e.g., integral formulae, collocation). The results of recent works in this area by prominent authors are reviewed. The prediction of gravity outside the earth from surface data is discussed in two forms: a) prediction of gravity disturbance at high altitudes and b) upward continuation of gravity anomalies. The achievable improvements of the high frequency field by airborne gradiometry are summarized utilizing recent investigations.

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