G - Physics – 01 – S
Patent
G - Physics
01
S
G01S 5/14 (2006.01) G01S 5/00 (2006.01)
Patent
CA 2158993
A GPS system for determining precise position, for example of an aircraft during its final approach to landing. The GPS system (20) includes a ground based GPS reference system which receives, with a reference receiver, GPS signals (25) and makes carrier phase measurements. The GPS reference system generates and broadcasts one or more pseudolite signals (27) each having a carrier component and a data link signal (30) having data representing the phase measurements made by the GPS reference system. The GPS system includes a GPS mobile system which receives, with a position receiver, the same GPS signals as were received by the reference receiver and the data link and pseudolite signals broadcast by the GPS reference system. In response to the phase measurements made by both the reference receiver and the position receiver during an initialization period, the position receiver resolves the integer wavelength ambiguities associated with the phase measurements. The resolved integer wavelength ambiguities are used by the position receiver after the initialization period to generate precise position determinations for the GPS mobile system.
Cobb Henry Stewart
Cohen Clark Emerson
Lawrence David Gary
Parkinson Bradford Wells
Pervan Boris Steven
Integrinautics
Smart & Biggar
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