H - Electricity – 04 – B
Patent
H - Electricity
04
B
343/69
H04B 7/19 (2006.01) G01S 5/02 (2006.01)
Patent
CA 1274611
METHOD AND APPARATUS FOR PRECISION SURVEYING USING BROADCAST SATELLITE SIGNALS ABSTRACT OF THE DISCLOSURE A method and apparatus for accurately and precisely determining the position coordinates of a receiver located at a predetermined site using signals broadcast from a plurality of orbiting satellites and using information derived from a second receiver located at a reference site having known coordinates. Carrier phase measurements made by the two receivers on all of the incoming satellite signals are incorporated into a special square root information filter matrix that permits a convenient determination of phase noise in the satellite and receiver clocks, for use in subsequently correcting the phase measure- ments. The position coordinates of the unknown site are determined in a special three-stage procedure that generates, successively, a hyperbolic solution, a Doppler pseudorangE solution, and a resolved lane solution.
534745
He Holdings Inc.
Smart & Biggar
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