Hyperbolic positioning method using broadcast digital television signals and monitor receiver ranging

PatentA system and method involve determining a time difference of arrival between two robust broadcast digital television (DTV) signals received at a mobile receiver and a monitor receiver from at least two DTV transmitters, determining a pseudorange between the mobile receiver and each of the DTV transmitters, and determining a position of the mobile receiver using the determinedpseudoranges and the distance between the monitor receiver and the mobile receiver