Instantaneous Calcuation Of Atmospheric Correction-terms Between Cors Of Network Rtk

The main challenges for reference network data processing in real-timecarrier phase-based positioning contains: detecting and repairing cycle-slips,correctly fixing ambiguities between the reference station during so sort of"initialization"procedure, fixing ambiguities instantaneously when tracking to anew satellite, keeping on fixing ambiguities and estimating atmosphericcorrection terms. For these questions hereinbefore, the main studies of this paperare followed as:Analyze correction model of tropospheric delay and ionospheric delayrespectively, advancing filter model how to estimate dual-tropospheric delay anddual-ionospheric delay.Analyze error of orbit information, which can be almost eliminated ifquickly predicted orbit information is used.Detecting cycle-slips by using ionosphere effect remains and repairing themby using improved method with pseudo range and carrier phase combinationobservations.Detailed study the Least-square Ambiguity Decorrelation Adjustment(LAMBDA) method and the searchable arithmetic of optimum Cholesky-splitter.The Kalman filter parameter estimation of wide-lane dual observation andL₁ dual observation equation is imported during so sort of"initialization"procedure. Then this paper advances a model how to estimate wide-lane dualambiguityfor a new satellite and the principle of fixing ambiguity is showed.Atmospheric correction terms can be estimated instantaneously between tworeference stations.The arithmetics which ultimately keeping on fixing ambiguities andestimating atmospheric correction terms are implemented by program, theirfeasibility is validated by test data.