The methods of modeling the terrain of fields for precision farming technologies

Abstract

According to aerial photography and two models of GPS receivers, the digital models of the slope were built using the "ArcGIS" tools. The comparison of the quality of digital terrain models created with use of three sources was carried out in this paper. The data obtained from GPS receivers have a significant altitude error; however, taking this factor into account, new equipment determines the location of a point in space more accurately, minimizing sharp altitude indicators. The quality of terrain models depends on the model of GPS receiver and the number of points, but anyway aerial photography is the best source for creating digital terrain models. Although it has a high accuracy of output data, it is worth considering that this method is very expensive. The resulting models can be used to design elements of precision farming technology.