Position location using broadcast digital television signals

Communications: directive radio wave systems and devices (e.g. – Directive – Position indicating

Reexamination Certificate

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Reexamination Certificate

active

06861984

ABSTRACT:
A computer program product, apparatus, and method for determining the position of a user terminal. It includes receiving at the user terminal a plurality of digital television (DTV) broadcast signals from a plurality of DTV transmitters, determining a pseudo-range between the user terminal and each DTV transmitter based on the DTV broadcast signals, and determining a position of the user terminal based on the pseudo-ranges and a location of each of the DTV transmitters.

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