Communications: directive radio wave systems and devices (e.g. – Determining direction
Reexamination Certificate
2005-11-22
2005-11-22
Sotomayor, John B. (Department: 3662)
Communications: directive radio wave systems and devices (e.g.,
Determining direction
C342S013000, C342S174000, C342S417000
Reexamination Certificate
active
06967615
ABSTRACT:
An electronic warfare apparatus for determining the location of for example a ground based source of electromagnetic radiation from a platform such as an aircraft. Location is determined using angle of arrival based vector determinations provided by signal differences detected in the ground based signals arriving at platform antennas. Elimination of angle of arrival errors arising from imprecise knowledge of platform electronic warfare antenna characteristics is a focal point of the invention and is accomplished through precision use of global position system information received via the same electronic warfare antennas. Accurate determination of electronic warfare antenna characteristics prior to consideration of the large distance multiplication factors imposed by aircraft to distant signal source geometry enables accurate distant signal source location using the invention.
REFERENCES:
patent: 6175725 (2001-01-01), Auber
patent: 6218983 (2001-04-01), Kerry et al.
patent: 6222479 (2001-04-01), Honigsbaum
patent: 6237496 (2001-05-01), Abbott
patent: 6249252 (2001-06-01), Dupray
patent: 6339396 (2002-01-01), Mayersak
patent: 6411249 (2002-06-01), Rose
patent: 6421010 (2002-07-01), Chadwick et al.
patent: 6424837 (2002-07-01), Hall et al.
patent: 6438381 (2002-08-01), Alberth, Jr. et al.
patent: 6492937 (2002-12-01), Sparrow et al.
patent: 6594582 (2003-07-01), Quinn
patent: 6598009 (2003-07-01), Yang
patent: 6628231 (2003-09-01), Mayersak
patent: 6670920 (2003-12-01), Herrick
patent: 6700536 (2004-03-01), Wiegand
patent: 6727851 (2004-04-01), Bass et al.
patent: 2002/0033769 (2002-03-01), Bass et al.
patent: 2004/0227658 (2004-11-01), VandenBerg
“Direction of arrival estimation via extended phase interferometry”, Ying-Wah Wu; Rhodes, S.; Satorius, E.H. Aerospace and Electronic Systems, IEEE Transactions on vol. 31, Issue 1, Jan. 1995 P(s):375-381.
Lin David M.
Tsui James B. Y.
AFMCLO/JAZ
Hollins Gerald B.
Sotomayor John B.
The United States of America as represented by the Secretary of
LandOfFree
Phase center measurement of electronic warfare antennas... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Phase center measurement of electronic warfare antennas..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Phase center measurement of electronic warfare antennas... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3457789