Method and system for measuring the time-of-flight of a...

Details Method and system for measuring the time-of-flight of a... Method and system for measuring the time-of-flight of a...

2005-06-29

2008-10-07

Marcelo, Melvin (Department: 2616)

Multiplex communications

Diagnostic testing

Determination of communication parameters

Reexamination Certificate

active

07433322

ABSTRACT:
A method and system for measuring the time-of-flight (TOF) of a radio signal is described herein. According to various implementations, the system uses multiple antennas, each of which receives direct path radio signals and reflected radio signals. In various implementations, the system sends a sequence of bursts that are detected using a cross correlation detector. The receiver steers antenna nulls to a different angles for each burst and measures the TOF at each angle. The system then calculates the minimum correlation peak from all measurements, and treats that correlation peak as the true, direct path TOF measurement.

REFERENCES:
patent: 5943322 (1999-08-01), Mayor
patent: 5945948 (1999-08-01), Buford et al.
patent: 6807165 (2004-10-01), Belcea
patent: 6873839 (2005-03-01), Stanforth
patent: 2002/0058502 (2002-05-01), Stanforth

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