GPS/dead-reckoning combination system and operating method...

Details GPS/dead-reckoning combination system and operating method... GPS/dead-reckoning combination system and operating method...

2007-10-23

2007-10-23

Chin, Gary (Department: 3661)

Data processing: vehicles, navigation, and relative location

Navigation

Employing position determining equipment

C701S217000, C342S357490, C342S358000

Reexamination Certificate

active

10924703

ABSTRACT:
The present invention relates to a GPS/dead-reckoning combination system and an operation method of the same. The GPS/dead-reckoning combination system includes a GPS receiver that receives an absolute position data of a moving unit from a GPS; an inertia sensor that measures a displacement of the moving unit based on a dead-reckoning method; a forward and backward movement judging unit that judges a state data concerning a forward or backward movement of the moving unit; a dead-reckoning processor that measures a running distance and a position of the moving unit based on a dead-reckoning method in reference with the data provided from the inertia sensor and the forward and backward movement judging unit; and a computation unit that estimates the current position of the moving unit in reference with the data from the GPS receiver and the dead-reckoning processor.

REFERENCES:
patent: 5862511 (1999-01-01), Croyle et al.
patent: 5887269 (1999-03-01), Brunts et al.
patent: 6024655 (2000-02-01), Coffee
patent: 6029111 (2000-02-01), Croyle
patent: 6282496 (2001-08-01), Chowdhary
patent: 6308134 (2001-10-01), Croyle et al.

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