(19)

(11)

EP 0 168 442 A1

(12)

(43) Date of publication: 22.01.1986 Bulletin 1986/04 (21) Application number: 85900587.0 (22) Date of filing: 16.01.1985

(51) International Patent Classification (IPC):  G01S 3/ 86( . ) G01S 7/ 36( . ) G01S 7/ 536( . ) H01Q 3/ 26( . ) G01S 7/ 02( . ) G01S 7/ 527( . ) G10K 11/ 34( . ) (86) International application number: PCT/AU1985/000007 (87) International publication number: WO 1985/003359 (01.08.1985 Gazette 1985/17)

(84) Designated Contracting States: BE CH DE FR GB LI NL SE (30) Priority: 23.01.1984 AU 19840003308 (71) Applicants: THE COMMONWEALTH OF AUSTRALIA Canberra, Australian Capital Territory 2600 (AU) THE UNIVERSITY OF NEWCASTLE Newcastle New South Wales 2307 (AU)	(72) Inventor: CANTONI, Antonio Rankin Park, NSW 2287 (AU) (74) Representative: Opperman, Stuart Richard, et al  Haseltine Lake & Co. Hazlitt House 28 Southampton Buildings Chancery Lane London WC2A 1AT London WC2A 1AT (GB)