METHOD FOR PREPARATION OF HIGHLY DETAILED GRAVIMETRIC MAPS Russian patent published in 2022 - IPC G01V7/06 

FIELD: geodetics.

SUBSTANCE: invention relates to the field of gravimetry and can be used to prepare highly detailed gravimetric maps. Essence: determination of the values of gravity acceleration (GA) and the gravitational gradient at the nodal points of the models of the potential of the gravitational field of the Earth (GFE). Interpolating certain values into the intermediate points of the spatial grid of the values of the parameters of the GFE of a given detail. When constructing maps of the GA based on its known values at the nodal points of the model, data on the coordinates of the nodal points of the spatial grid of a given detail, data on the terrain model, data on the density model of the underlying rocks are additionally used. Based on all these data, anomalous corrections to the values of the GA of the normal field are calculated for all points of the spatial grid of a given detail, caused by the influence of the geodetic height above the reference ellipsoid, the influence of the intermediate layer of rocks between the surface of the reference ellipsoid and the physical surface of the Earth. For the nodal points of the model, the values of the anomalous component caused by the influence of an unknown inhomogeneity of the density of rocks under the surface of the reference ellipsoid are determined. Interpolateing certain values to the points of a highly detailed spatial grid. Based on the results of interpolation, the computational values of the GA are specified for all points of a highly detailed spatial grid. For points of a highly detailed spatial grid whose height exceeds the specified one, the values of gravitational gradients are calculated from data on their coordinates, data on the terrain model and the rock density model. Based on the results of calculating the GA values and gravitational gradients for the nodal points of a highly detailed spatial grid, a map of the parameters of the GFE with a given detail is prepared.

EFFECT: improving the accuracy of gravity maps.

1 cl, 10 dwg