Based on analysing theoretical formula of normalgravityfield of the earth, the author holds that the geodetic elevation of GPS survey might ha adopted for cavity altitude correction.
本文通过对地球正常重力场理论公式的分析,认为可以采用GPS测量的大地高进行重力高度改正。
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The gravity data processing includes displacement rectification, normalfield correction, Eotvos rectification, Bouguer correction and Grany anomaly correction.