Data processing: vehicles – navigation – and relative location – Navigation – Employing position determining equipment
Reexamination Certificate
2005-04-08
2008-08-05
Nguyen, Tan Q (Department: 3661)
Data processing: vehicles, navigation, and relative location
Navigation
Employing position determining equipment
C701S213000, C701S216000, C342S357490
Reexamination Certificate
active
07409290
ABSTRACT:
A improved positioning and navigation method and system thereof can substantially solve the problems encountered in global positioning system-only and inertial navigation system-only, such as loss of global positioning satellite signal, sensibility to jamming and spoofing, and inertial solution's drift over time, in which the velocity and acceleration from an inertial navigation processor and an attitude and heading solution from an AHRS processor are used to aid the code and carrier phase tracking of the global positioning system satellite signals, so as to enhance the performance of the global positioning and inertial integration system, even in heavy jamming and high dynamic environments and when the GPS satellite signals are not available.
REFERENCES:
patent: 4754280 (1988-06-01), Brown et al.
patent: 5543804 (1996-08-01), Buchler et al.
patent: 6278945 (2001-08-01), Lin
American GNC Corporation
Chan Raymond Y.
David and Raymond Patent Firm
Nguyen Tan Q
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