G - Physics – 01 – S
Patent
G - Physics
01
S
325/110, 343/69
G01S 5/14 (2006.01) G01S 3/46 (2006.01) G01S 3/48 (2006.01) H04B 1/707 (2006.01)
Patent
CA 1333295
Two receiver channels each driven by a common local oscillator signal are employed in a global positioning system. The signal developed by the first receiver channel is used to drive in phase (I) and quadrature (Q) counters of a Castas- loop, which phase-locks to the signal. The signal developed by the second receiver channel is used to drive another pair of in phase (I) and quadrature (Q) counters, which develop signals from which heading information is calculated.
595611
Braisted Paul E.
Eschenbach Ralph F.
Smart & Biggar
Trimble Navigation Ltd.
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