(19)

(11)

EP 2 021 816 A1

(12)

(43) Date of publication: 11.02.2009 Bulletin 2009/07 (21) Application number: 06758998.6 (22) Date of filing: 04.05.2006

(51) International Patent Classification (IPC):  G01S 1/00(2006.01) H04B 1/38(2006.01) G01S 13/00(2006.01) (86) International application number: PCT/US2006/017014 (87) International publication number: WO 2007/130032 (15.11.2007 Gazette 2007/46)

(84) Designated Contracting States: AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC NL PL PT RO SE SI SK TR Designated Extension States: AL BA HR MK YU (71) Applicant: GEORGIA TECH RESEARCH CORPORATION Atlanta, GA 30332-0415 (US)	(72) Inventors: PINEL, Stephane Atlanta, Georgia 30309 (US) LASKAR, Joy Marietta, Georgia 30068 (US) (74) Representative: Seitz, Holger Fritz Karl  Exter Polak & Charlouis B.V. P.O. Box 3241 2280 GE Rijswijk 2280 GE Rijswijk (NL)