TV-Positioning

Rosum TV-Positioning measures ranges from TV transmitters and uses those to calculate device position. In conventional broadcast networks (ATSC / NTSC in the United States), Rosum's system architecture is as shown below.



Regional monitors are deployed on a metro-by-metro basis. Local (incident scene) level deployment is not required.

Signal is not demodulated, enabling Rosum to utilize signals far weaker than those required to deliver picture. This enables Rosum to use signals as weak as -128 dBm, at ranges of 50-150km from the transmitter.

For mobile TV networks, such as DVB-H or T-DMB, which are synchronized to GPS, position is calculated autonomously on the mobile receiver.