Abstract
The process of creating the Earth`s anomalous gravitational field’s parameters navigation-and-gravimetric maps includes interpolating measurement data into nodes of a regular grid with a given step and reducing them to a given height. To interpolate the said parameters to intermediate points, the remove-restore method has become widespread, it enables taking into account the influence of topographic masses, and there is a wide range of methods for their reduction. The authors examine the process of creating the above mentioned maps using the example of the Earth gravity anomaly real measurements in a foothill region. At the same time, the influence of topographic masses was taken into account directly based on the use of the SRTM digital elevation model and the TopDensT rock-density-structure one as well as due to the data from the ready-made global topograpvimetric model SRTM2Gravity. Operating the information from the SRTM2Gravity model allows you to reduce computation time from several hours to several seconds. It was found out that taking into account topographic masses can significantly reduce the error at creating a map. For the region under consideration, the gravity anomaly interpolating mistake when using topography data decreased from 3,85 to 0,86 mGal. A brief overview of the Earth gravitational field`s parameters reducing methods is given
Published Version
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