DIRECTION FINDING SYSTEM AND METHOD FOR RECEIVING A SIGNAL OF A PARTICIPANT, UNMANNED AERIAL VEHICLE LOCALIZATION SYSTEM AS WELL AS MOBILE NETWORK TESTING SYSTEM

The invention relates to a direction finding system (10) for receiving a signal of a participant (12). The direction finding system (10) comprises at least one direction finder unit (20), at least one direction finding antenna (22) connected with the at least one direction finder unit (20), and at least one protocol decoder unit (24) connected with the at least one direction finder unit (20) and/or the at least one direction finding antenna (22). The at least one protocol decoder unit (24) is configured to decode non-encrypted messages from a base station (16), thereby obtaining information about a resource grid associated with the base station (16). The at least one protocol decoder unit (24) is configured to communicate the information about the resource grid to the at least one direction finder unit (20) and/or the at least one direction finding antenna (22). The information is used for synchronizing the at least one direction finder unit (20) and/or the at least one direction finding antenna (22) to the resource grid such that a signal from at least one certain participant (12) is selectively received. The at least one direction finder unit (20) is configured to determine a bearing of the respective participant (12) selected. Moreover, a method, an unmanned aerial vehicle localization system and a mobile network testing system are described.