(19)
(11) EP 1 259 835 A2

(12)

(88) Date of publication A3:
20.12.2001

(43) Date of publication:
27.11.2002 Bulletin 2002/48

(21) Application number: 01904106.0

(22) Date of filing: 08.02.2001
(51) International Patent Classification (IPC)7: G01S 13/44
(86) International application number:
PCT/GB0100/500
(87) International publication number:
WO 0105/9473 (16.08.2001 Gazette 2001/33)
(84) Designated Contracting States:
AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE TR
Designated Extension States:
AL LT LV MK RO SI

(30) Priority: 08.02.2000 GB 0002857
06.06.2000 US 209587 P

(71) Applicant: CAMBRIDGE CONSULTANTS LIMITED
Cambridge CB4 4DW (GB)

(72) Inventors:
  • OSWALD, Gordon, Kenneth, Andrew
    Huntingdon,Cambridge PE28 3LY (GB)
  • RICHARDSON, Alan, Trevor
    Ely,Cambridge CB7 5NQ (GB)
  • BURCHETT, Michael, Hugh
    Cambridge CB4 1UE (GB)
  • CLOUSTON, Eric, Nicol
    Cambridge CB4 1NW (GB)
  • TOUTOUNGI, Danielle, Emma
    Leamington Spa,Warwickshire CV32 6PR (GB)

(74) Representative: Cozens, Paul Dennis et al
Mathys & Squire100 Grays Inn Road
London WC1X 8AL
London WC1X 8AL (GB)

   


(54) METHODS AND APPARATUS FOR OBTAINING POSITIONAL INFORMATION