Synchronized radar networks

A radar system for providing position information to a mobile unit, the radar system comprising:

• a receiving interface which is adapted to receive radio frequency (RF) signals;
• a processing unit which is adapted to process received RF signals and to determine an occupation of a predetermined time-frequency space by the received RF signals;
• a transmitting interface adapted to transmit information on an intention of the radar system to occupy a specific portion of the predetermined time-frequency space;
• and
• a plurality of beacon units adapted to provide position information of the radar system on the specific portion in the predetermined time-frequency space, when it is determined that the specific portion of the predetermined time-frequency space is not occupied.

A method in a radar system for providing position information to a mobile unit, the method comprising:

• receiving, by a receiving interface, radio frequency (RF) signals;
• processing, by a processing unit, the received RF signals;
• determining, by the processing unit, an occupation of a predetermined time-frequency space by the received RF signals;
• transmitting, by a transmitting interface, information on an intention of the radar system to occupy a specific portion of the predetermined time-frequency space;
• and
• providing, by a plurality of beacon units, position information of the radar system on the specific portion in the predetermined time-frequency space, when it is determined that the specific portion of the predetermined time-frequency space is not occupied.