Data processing: vehicles – navigation – and relative location – Navigation – Employing position determining equipment
Reexamination Certificate
2005-11-01
2005-11-01
Chin, Gary (Department: 3661)
Data processing: vehicles, navigation, and relative location
Navigation
Employing position determining equipment
C367S004000, C367S131000
Reexamination Certificate
active
06961657
ABSTRACT:
A submarine launched expendable radio navigation system (SSXRN) buoy method and apparatus. According to one embodiment, a method for determining a submarine geographic position using a SSXRN buoy system is disclosed. The method comprising launching a radio navigation-enabled buoy and recording a launch time and DRNS submarine position. The method further comprises recording a buoy breach time and searching for radio navigation RF signals. Then, recording a radio navigation position acquisition time and an initial radio navigation position. Further, recording a subsequent radio navigation position data and a subsequent time. Moreover, determining a DRNS correction factor using a DRNS position error, a buoy drift, radio navigation position data and DRNS position data. In addition, estimating the submarine geographic position using the DRNS correction factor and a DRNS geographic position. In another embodiment, a SSXRN buoy system is disclosed.
REFERENCES:
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patent: 5046359 (1991-09-01), Layport
patent: 5319376 (1994-06-01), Eninger
patent: 5642330 (1997-06-01), Santopietro
patent: 6494159 (2002-12-01), Sirmalis et al.
patent: 6687186 (2004-02-01), Fields
Braun Aaron R.
Cowen Steven J.
Held Jimmy L.
Mackelburg Gerald R.
Murphy Gary D.
Chin Gary
Kagan Michael A.
Lee Allan Y.
Lipovsky Peter A.
The United States of America as represented by the Secretary of
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