TheambiguityresolutioninthefieldofGPSisinvestigatedindetail.Anewalgorithmtoresolvetheambiguityisproposed.Thealgorithmfirstobtainsthefloatingresolutionoftheambiguityaidedwithtripledifferencemeasurement.Decorrelationofsearchingspaceisdonebyreducingtheambiguitycovariancematrix'sdimensiontoovercomethepossiblesickfactorizationofthematrixbroughtbyZ-transformation.Insimulation,theproposedalgorithmiscomparedwithleast-squaresambiguitydecorrelationadjustment(LAMBDA).TheresultshowsthattheproposedalgorithmisbetterthanLAMBDAbecauseoflesserresolvingtime,whichapproximatelyreduces20%resolvingtime.Thus,theproposedalgorithmadaptstothehighdynamicreal-timeapplications.
