Data processing: vehicles – navigation – and relative location – Navigation – Employing position determining equipment
Reexamination Certificate
2005-03-08
2005-03-08
Nguyen, Tan Q. (Department: 3661)
Data processing: vehicles, navigation, and relative location
Navigation
Employing position determining equipment
C701S213000, C701S214000, C342S357490, C342S357490
Reexamination Certificate
active
06865478
ABSTRACT:
The invention relates to a method for determining in a positioning system the position of a receiver and/or an accurate system time. The receiver receives and tracks code modulated signals transmitted by beacons of the positioning system and comprising a known regularity. In order to enable an improved positioning, it is proposed that the method comprises establishing a grid covering the area20of earth which is visible by a plurality of beacons from which said receiver receives and tracks code modulated signals at a specific reference time instance. The method further comprises determining the position of the receiver and/or the system time based on measured code phases of code modulated signals received and tracked by the receiver, on available assistance data and on at least a selected one of the intersection points of the grid as reference location. The invention relates equally to corresponding devices and a positioning system.
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Sirola Niilo
Syrjārinne Jari
Nguyen Tan Q.
Nokia Corporation
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