Levelling utilities / R. Dumont and Z. Bardossy. : M183-2/7842E-PDF

"A series of GX utilities for Geosoft’s Oasis Montaj software have been developed to facilitate the levelling of magnetic airborne survey data. The utilities and method described in this document are based on the principle of minimizing the tie line and traverse line intersection differences. A Geosoft intersection database is used as the input source to TIELEV.GX which applies a low-pass filter to the mis-tied values along the tie lines. The GX, LOADLEV.GX, then loads the levelling corrections to the tie lines and traverse lines into the main database"--Abstract, page 2.

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