Communications: directive radio wave systems and devices (e.g. – Directive – Position indicating
Reexamination Certificate
2006-06-06
2009-08-04
Tarcza, Thomas H (Department: 3662)
Communications: directive radio wave systems and devices (e.g.,
Directive
Position indicating
C455S456100, C455S456500
Reexamination Certificate
active
07570213
ABSTRACT:
Method and apparatus for locating an intruding radio frequency signal in a wireless network. Relative distance measurements are computed between pairs of receivers from a plurality of receivers to the source of the intruding signal based on received signal strength. Loci of possible locations are plotted, points of intersection are determined, and a clustering algorithm is applied, yielding the location of the source of the intruding signal. The invention is distinguished in that its operation does not require knowledge of either the transmitted power or antenna gain of the intruding signal source.
REFERENCES:
patent: 6801538 (2004-10-01), Abi-Nassif et al.
patent: 7257411 (2007-08-01), Gwon et al.
patent: 7308276 (2007-12-01), Goren et al.
Cole Frank R.
Debany Warren H.
Ratazzi E. Paul
Liu Harry
Mancini Joseph A.
Tarcza Thomas H
The United States of America as represented by the Secretary of
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