ZHANG Xiaohong, PAN Yuming, ZUO Xiang, WANG Jie. An Improved Robust Kalman Filtering and Its Application in PPP[J]. Geomatics and Information Science of Wuhan University, 2015, 40(7): 858-864. DOI: 10.13203/j.whugis20130577
Citation: ZHANG Xiaohong, PAN Yuming, ZUO Xiang, WANG Jie. An Improved Robust Kalman Filtering and Its Application in PPP[J]. Geomatics and Information Science of Wuhan University, 2015, 40(7): 858-864. DOI: 10.13203/j.whugis20130577
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An Improved Robust Kalman Filtering and Its Application in PPP

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  • TheimpactofsmallundetectedcyclesliporoutliersonprecisepointpositioningisdiscussedandanimprovedrobustKalmanfilteringisproposed.Thenewmethodcandealwithbothsmallcycleslipandoutlierswellthroughanalyzingtheposterioriphaseresiduals.Forphaseobservationswithze roweightintraditionalrobustscheme,wereinitializeitsambiguityandkeepitsoriginalweight.Andforthosemaybecontaminatedbygrosserror,weloweritsweightandenlargethevarianceofitsam biguity.Bothobserveddataandsimulateddatatestsshowthatthenewmethodcannotonlyimprovethepositioningresultssignificantly,butalsoavoidthebadinfluenceofsmallundetectedcycleslip,whichmaycausethecontinuallyincreasementofphaseobservationresidualsinsubsequentepochs.犓犲狔狑狅狉犱狊：ＰＰＰ；ｒｏｂｕｓｔｅｓｔｉｍａｔｉｏｎ；Ｋａｌｍａｎｆｉｌｔｅｒｉｎｇ；ｃｙｃｌｅｓｌｉｐｄｅｔｅｃｔｉｏｎ
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