Title:
重力グラジオ・メータ
Document Type and Number:
Japanese Patent JP2010510498
Kind Code:
A
Abstract:
A gravity gradiometer is disclosed which has sensor masses in the forms of bars 41 and 43 arranged orthogonal to one another and transducers for providing an output signal indicative of movement of the bars in response to changes in the gravity gradient tensor. The transducers are formed from thin film structure having a first layer forming a fine pitch coil 510 and a second layer forming a coarse pitch coil 511. The layers are separated by an insulating layer. The coarse pitch coil 511 forms a transformer for stepping up the current flowing through the fine pitch coil 510 and the coarse pitch coil 511 supplies current to a SQUID device 367.
Inventors:
Frank Joachim Fan Can
John Winterflood
John Winterflood
Application Number:
JP2009537445A
Publication Date:
April 02, 2010
Filing Date:
August 17, 2007
Export Citation:
Assignee:
TECHNOLOGICAL RESOURCES PTY.LIMITED
International Classes:
G01V7/04; G01V7/16
Attorney, Agent or Firm:
Hideto Asamura
Hajime Asamura
Hayashi Zouzo
Kuniaki Shimizu
Hajime Asamura
Hayashi Zouzo
Kuniaki Shimizu