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(11)    Patent No :    AP 2750    (73) Applicant(s)       
(21)    Application No :    AP/P/2010/005517    TECHNOLOGICAL RESOURCES PTY. LIMITED, 120 Collins       
            Street, Melbourne, 3000, Victoria,       
                   
(22)    Filing Date :    25.09.2009    Australia       
(24)    Date of Grant &    06.09.2013           
                   
(45)    Publication :

(30)    Priority Data                    (72) Inventors   
    (33) Country    (31) Number    (32) Date    VAN KANN Frank Joachim, Australia   
    AU            2008904996    25.09.2008       
    AU            2008904997    25.09.2008       
    AU            2008904995    25.09.2008       
    et al                               
                                (74) Representative   
(84)    Designated State                   
                       
    BW    GM    GH    KE    LS    MW    MZ   NA   SL    FISHER CORMACK & BOTHA   
                                   
    SD    SZ    T Z    UG    ZM    ZW           
(51)    International    Classification    G01V 7/16 (2006.01)   
(54)    Title

A gravity gradiometer

(57)    Abstract

The present disclosure provides a gravity gradiometer that comprises a detector for detecting a gravity gradient. The detector comprises at least one movable sensing element and that is arranged to generate a signal in response to a change in gravity gradient. The gravity gradiometer also comprises a support structure for supporting the detector in an aircraft and a component that is arranged to reduce transmission of aircraft acceleration to the detector. The at least one movable sensing element and the support structure together are arranged to reduce an influence of an the aircraft acceleration on the signal by a factor of at least when the gravity gradiometer is airborne and exposed to the aircraft acceleration.

(56)    Documents Cited :    US2008115374 A1    WO0244757 A2

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