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Title:
POSITIONING DEVICE OF MISSILE
Document Type and Number:
Japanese Patent JP2009103488
Kind Code:
A
Abstract:

To solve the problem wherein, when a missile continues acceleration for long hours, a frequency drift caused by the acceleration is generated in a reference transmitter for generating a reference frequency of signal processing.

The positioning device of a missile loaded on the missile, for positioning a self-position by receiving signals from a plurality of GPS satellites includes the reference transmitter 12 for generating the reference frequency, an accelerometer 13 for measuring an acceleration generated in the missile, and a first correction means 14 for calculating the frequency drift of the reference transmitter corresponding to the acceleration measured by the accelerometer 13. The frequency drift of the reference transmitter 12 generated by the acceleration is removed by canceling the frequency drift of the reference transmitter 12 generated actually based on the calculated frequency drift by the first correction means 14.


Inventors:
MORIZAKI HIROTAKE
YASUI HIDEKI
MORIYA ASAKO
Application Number:
JP2007273543A
Publication Date:
May 14, 2009
Filing Date:
October 22, 2007
Export Citation:
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Assignee:
IHI AEROSPACE CO LTD
International Classes:
F42B15/01; G01C21/00; G01C21/24; G01S19/18; G01S19/23; G01S19/26; G08G5/00
Domestic Patent References:
JP2006514258A2006-04-27
JP2007024432A2007-02-01
JPH0814919A1996-01-19
JP2004028911A2004-01-29
Foreign References:
WO2006057811A12006-06-01
Attorney, Agent or Firm:
Janggi Motonori