Patent ID: 7432853

Claim:
A method of processing a set of GNSS signal data derived from signals having at least three carriers, comprising: a. Applying to the set of GNSS signal data a geometry filter using a geometry carrier-phase combination to obtain an array of ambiguity estimates for the geometry carrier-phase combination and associated statistical information; b. Applying to the set of GNSS signal data a bank of ionosphere filters using a geometry-free ionosphere carrier-phase combination to obtain an array of ambiguity estimates for the ionosphere carrier-phase combination and associated statistical information; c. Applying to the set of GNSS signal data at least one bank of Quintessence filters using a geometry-free and ionosphere-free carrier-phase combination to obtain an array of ambiguity estimates for the geometry-free and ionosphere-free carrier-phase combination and associated statistical information; d. Applying to the set of GNSS signal data at least one code filter using a plurality of geometry-free code-carrier combinations to obtain an array of ambiguity estimates for the code-carrier combinations and associated statistical information; and e. Combining the arrays of a., b., c. and d. to obtain a combined array of ambiguity estimates for all carrier phase observations and associated statistical information.