Reduced-power GPS-based system for tracking multiple objects...

Data processing: vehicles – navigation – and relative location – Navigation – Employing position determining equipment

Reissue Patent

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Details

C701S213000, C701S214000, C701S215000, C701S300000, C342S357490, C342S357490, C342S357490, C342S457000

Reissue Patent

active

RE040642

ABSTRACT:
Location of an object to be tracked is determined by measuring, at a receiver situated at the object, the propagation time differences between the signals from a plurality of GPS satellites, each of which is received by the receiver situated at the object. The measured propagation time difference values are transmitted to a central station where the location of the object to be tracked is calculated based upon the propagation time differences of the signals transmitted from the satellites and data derived from a receiver apart from the object but also receiving signals from the satellites.

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Jul. 15, 2004, Office Action of Deutsches Patent -and Markenamt.

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