Radio frequency device for receiving TV signals and GPS...

Details Radio frequency device for receiving TV signals and GPS... Radio frequency device for receiving TV signals and GPS...

2005-07-12

2005-07-12

Phan, Dao (Department: 3662)

Communications: directive radio wave systems and devices (e.g.,

Directive

Including a satellite

C342S357490, C701S213000

Reexamination Certificate

active

06917328

ABSTRACT:
An apparatus and method for determining the position of a user terminal comprise an antenna subsystem which is able to receive signals of GPS and TV, a receiver front end which converts the frequency of the incident signals and filters out unwanted signals so that the desired signals can be sampled, a digital processing component which accommodates the imperfections of the front end and converts the measured signals into a position information. The apparatus is capable of receiving at the user terminal, broadcast television signals from television signal transmitters; determining a first set of pseudo-ranges between the user terminal and the television signal transmitters based on a known component of the broadcast television signals; receiving at the user terminal global positioning signals from a global positioning satellites; determining a second set of pseudo-ranges between the user terminal and the global positioning satellites based on the global positioning signals; and determining a position of the user terminal based on the first and second sets of pseudo-ranges, locations of the television signal transmitters, and locations of the global positioning satellites.

REFERENCES:
patent: 5936571 (1999-08-01), Desjardins
patent: 2002/0015439 (2002-02-01), Kohli et al.
patent: 2002/0118133 (2002-08-01), Desjardins

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