IDENTIFYING SECOND GNSS NAVIGATION DATA AS POTENTIALLY MANIPULATED OR AS TRUSTWORTHY AT LEAST PARTIALLY BASED ON FIRST GNSS NAVIGATION DATA

摘要

It is inter-alia disclosed a method performed by a mobile device (2), the method comprising:- receiving (301) first GNSS navigation data containing at least one of ephemeris data of at least one GNSS satellite (101-104) and clock data of the at least one GNSS satellite (101-104) for a first time period;- determining (302) extended first GNSS navigation data at least partially based on the first GNSS navigation data, wherein the extended first GNSS navigation data contain at least one of ephemeris data of the at least one GNSS satellite (101-104) and clock data of the at least one GNSS satellite (101-104) for an extension time period;- receiving (303) second GNSS navigation data containing at least one of ephemeris data of the at least one GNSS satellite (101-104) and clock data of the at least one GNSS satellite (101-104) for a second time period;- determining (304), at least partially based on the extended first GNSS navigation data, whether or not the second GNSS navigation data are potentially manipulated.