TY - JOUR T1 - O elementárním modelu GPS systému A1 - Horský, Jan A1 - Navrátil, Vladislav JA - Obzory matematiky, fyziky a informatiky Y1 - 2008 VL - 37 IS - 4 SP - 37 EP - 41 SN - 1335-4981 N2 - The article deals with the basic physical principle of GPS. We emphasize the role of relativity of simultaneity here. ER -