Two-epoch centimeter-level PPP-RTK without external atmospheric corrections using best integer-equivariant estimation

dc.contributor.authorBrack, Andreas
dc.contributor.authorMännel, Benjamin
dc.contributor.authorSchuh , Harald
dc.date.accessioned2023-02-01T15:28:29Z
dc.date.available2023-02-01T15:28:29Z
dc.date.issued2022-10-27
dc.description.abstractAmbiguity resolution enabled precise point positioning (PPP-AR or PPP-RTK) without atmospheric corrections requires the user to estimate tropospheric and ionospheric delay parameters. The presence of the unconstrained ionosphere parameters impedes fast and reliable ambiguity resolution, so a time-to-first-fix of around 30 min for GPS-only solutions is generally reported, which can, to some extent, be reduced when combining multiple GNSS. In this contribution, we investigate the capabilities of almost instantaneous PPP-RTK, using only a few observation epochs at a sampling interval of 30 s, with the ionosphere-float model. The considered key elements are (a) the MSE-optimal best integer-equivariant estimator, (b) a combination of dual-frequency GPS, Galileo, BDS, and QZSS, (c) an area with good visibility of BDS and QZSS, and (d) a proper weighting of the PPP-RTK corrections. We provide a formal and simulation-based analysis of kinematic and static PPP-RTK with perfect, i.e., deterministic, clock and bias corrections as well as corrections computed from only a single reference station. The results indicate that, on average, one can expect centimeter-level positioning results with just slightly more than two epochs already with single-station corrections. This is confirmed with real four-system GNSS data, for which the availability of two-epoch centimeter-level horizontal positioning results is 99.7% during an exemplary day.en
dc.identifier.eissn1521-1886
dc.identifier.issn1080-5370
dc.identifier.urihttps://depositonce.tu-berlin.de/handle/11303/18130
dc.identifier.urihttps://doi.org/10.14279/depositonce-16923
dc.language.isoen
dc.rights.urihttps://creativecommons.org/licenses/by/4.0/
dc.subject.ddc550 Geowissenschaftende
dc.subject.othermulti-GNSSen
dc.subject.otherprecise point positioningen
dc.subject.otherPPPen
dc.subject.otherinteger ambiguity resolutionen
dc.subject.otherbest integer-equivariant estimationen
dc.subject.otherPPP-ARen
dc.subject.otherPPP-RTKen
dc.titleTwo-epoch centimeter-level PPP-RTK without external atmospheric corrections using best integer-equivariant estimationen
dc.typeArticle
dc.type.versionpublishedVersion
dcterms.bibliographicCitation.articlenumber12
dcterms.bibliographicCitation.doi10.1007/s10291-022-01341-0
dcterms.bibliographicCitation.journaltitleGPS Solutions
dcterms.bibliographicCitation.originalpublishernameSpringer Nature
dcterms.bibliographicCitation.originalpublisherplaceHeidelberg
dcterms.bibliographicCitation.volume27
dcterms.rightsHolder.referenceCreative-Commons-Lizenz
tub.accessrights.dnbfree
tub.affiliationFak. 6 Planen Bauen Umwelt::Inst. Geodäsie und Geoinformationstechnik::FG Satellitengeodäsie
tub.publisher.universityorinstitutionTechnische Universität Berlin

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