Marián MOŽUCHA

Cartographic modelling of interactions of FM signal with georelief

Možucha, M.: Cartographic modelling of interactions of FM signal with georelief. Kartografické listy, 2004, 12, 16 figs., 1 tab., 19 refs.

Abstract: Calculations of optical visibility, insolation of georelief and spatial solar input are implemented into many GIS-es. But solar radiance is only an insignificant part of a huge frequency range of electromagnetic radiance around us. This article analyses a behavior of frequency modulated (FM) radio signal, and describes the interactions of FM radio signal with georelief, respectively with receiving antennas on it, on the level of a cartographic interpretation. The calculations run in a specialized program, containing modules for special morphometnc analysis of georelief and analysis of radio visibility. Calculation process is decribed in block diagrams. Its results are map outputs of chosen parameters of radio visibility. Aim of this article is to point at an area that was wrongfully neglected in cartography and geoinformatics in Czech republic and Slovakia. and help develop it.

Keywords: GIS, optical visibility, radio visibility, geometrical optics, wave optics, georelief, curvature