Communications: directive radio wave systems and devices (e.g. – Radar ew
Reexamination Certificate
2003-11-03
2008-08-12
Tarcza, Thomas H. (Department: 3662)
Communications: directive radio wave systems and devices (e.g.,
Radar ew
C342S019000, C342S021000, C342S090000, C342S195000
Reexamination Certificate
active
07411539
ABSTRACT:
A method for passively detecting the presence of radar signal emitters, in which an ESM unit receives radar signals with a number of antennas, each antenna covering a sector of the surrounding terrain. In order to conserve bandwidth, a technique is used, in which receiving channel is slit into a number of sub-bands. Each sub-band is converted to an IF channel. The individual IF channels are combined into a common IF channel in an adder. This process is repeated once more in order to bring the signals down to baseband, where they are digitized and processed to find the direction to and the identity of the emitter source. A number of ESM units are connected to a control center. In the control center the position of the radar emitter is determined by triangulation. In addition, the identity of the emitter is determined by comparison with known emitter signatures stored in a database.
REFERENCES:
patent: 4700191 (1987-10-01), Manor
patent: 4764979 (1988-08-01), Noguchi et al.
patent: 5507025 (1996-04-01), Rodeffer
patent: 6081229 (2000-06-01), Soliman et al.
patent: 6163297 (2000-12-01), Rose
patent: 6480139 (2002-11-01), Hoctor
patent: 6501258 (2002-12-01), Levitt et al.
patent: 6545632 (2003-04-01), Lyons et al.
patent: 6898235 (2005-05-01), Carlin et al.
patent: 2004/0072575 (2004-04-01), Young et al.
patent: 2004/0121753 (2004-06-01), Sugar et al.
patent: 2004/0135717 (2004-07-01), Gounalis
patent: 2004/0190660 (2004-09-01), Morris et al.
patent: 2006/0132348 (2006-06-01), Valand
patent: 2007/0116154 (2007-05-01), Morris et al.
European Patent Office, International Search Report for PCT/NO03/00368, dated Mar. 12, 2004.
Liu Harry K.
Tarcza Thomas H.
Telefonaktiebolaget L M Ericsson (Publ)
LandOfFree
Method for detecting the presence of radar signal emitters,... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Method for detecting the presence of radar signal emitters,..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method for detecting the presence of radar signal emitters,... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-4007953