%0 Journal Article %A Džunda, Milan %T Model of the Motion of a Navigation Object in a Geocentric Coordinate System %J TransNav, the International Journal on Marine Navigation and Safety of Sea Transportation %V 15 %N 4 %P 791-794 %D 2021 %U ./Article_Model_of_the_Motion_of_a_Navigation_Džunda,60,1175.html %X In this paper we describe the creation of a model of the motion of a flying object in a geocentric coordinate system (ECEF - Earth-Centered, Earth-Fixed). Such a model can be used to investigate the accuracy and resistance of radio navigation systems to interference. The essence of the design of the model lies in the mathematical description of the motion of a flying object in a geocentric coordinate system. The flight trajectory of a flying object consists of one straight section and two turns. When creating a model, we assume a flight at a constant altitude. In this paper, we present one of the possible procedures for modelling the motion of a flying object in a geocentric coordinate system. We chose the initial coordinates of the flying object according to flightradar 24. We used the Matlab software for computer simulation. %@ 2083-6473 %R 10.12716/1001.15.04.10