Matches in SemOpenAlex for { <https://semopenalex.org/work/W4387400612> ?p ?o ?g. }
Showing items 1 to 78 of
78
with 100 items per page.
- W4387400612 abstract "Precise Orbit Determination (POD) of Low Earth Orbit (LEO) satellites is essential for future LEO-augmented Positioning, Navigation and Timing (PNT) service based on the use of Global Navigation Satellite Systems (GNSS) measurements. Compared with the ambiguity-float reduced-dynamic LEO satellite POD, Integer Ambiguity Resolution (IAR) reduces number of parameters, eliminates the high correlations between the ambiguities and other estimable parameters, and strengthens observation model strength. In this study, using real data from Sentinel-6A tracking dual-frequency GPS and Galileo observations, the wide-lane (WL) and narrow-lane (NL) ambiguity fixing rates and the effects of the IAR on orbital accuracy are assessed in the single- and dual-constellation scenarios. Post-processed high-accuracy GNSS satellite clocks, orbits and Observable-specific Signal Biases (OSBs) from the final products of the Center for Orbit Determination in Europe (CODE) and the rapid products of the GeoForschungsZentrum (GFZ) are used for the analysis. Results showed that both the WL and NL fixing rates in the Galileo-only scenario are higher than those in the GPS-only scenario, reaching more than 98%. This implies a better signal quality of the Galileo observations. Applying IAR has improved the orbital accuracy for all single- and dual-constellation scenarios, and was shown to be especially helpful in reducing the once-per-revolution systematic effects in the along-track orbital errors, with over 50% improvement when using the COM products. With the IAR enabled, when using the COM final products, the 3D RMS of the orbital errors amounts to 1.2, 1.2 and 1.1 cm in the GPS-only, Galileo-only and GPS+Galileo combined scenarios, and the RMS of the Orbital User Range Errors (OUREs) amounts to 0.7, 0.7 and 0.6 cm, respectively. When using the GFZ rapid products, the IAR-enabled 3D RMS were 1.8, 2.1 and 1.4 cm in the GPS-only, Galileo-only and GPS+Galileo combined scenarios, with OURE RMS of about 1 cm." @default.
- W4387400612 created "2023-10-07" @default.
- W4387400612 creator A5002892334 @default.
- W4387400612 creator A5051831169 @default.
- W4387400612 creator A5065170783 @default.
- W4387400612 date "2023-10-05" @default.
- W4387400612 modified "2023-10-07" @default.
- W4387400612 title "Integer Ambiguity Resolution in Multi-Constellation GNSS for LEO Satellite POD" @default.
- W4387400612 doi "https://doi.org/10.33012/2023.19462" @default.
- W4387400612 hasPublicationYear "2023" @default.
- W4387400612 type Work @default.
- W4387400612 citedByCount "0" @default.
- W4387400612 crossrefType "proceedings-article" @default.
- W4387400612 hasAuthorship W4387400612A5002892334 @default.
- W4387400612 hasAuthorship W4387400612A5051831169 @default.
- W4387400612 hasAuthorship W4387400612A5065170783 @default.
- W4387400612 hasConcept C107768556 @default.
- W4387400612 hasConcept C11413529 @default.
- W4387400612 hasConcept C121332964 @default.
- W4387400612 hasConcept C127413603 @default.
- W4387400612 hasConcept C1276947 @default.
- W4387400612 hasConcept C13280743 @default.
- W4387400612 hasConcept C14279187 @default.
- W4387400612 hasConcept C146978453 @default.
- W4387400612 hasConcept C177219330 @default.
- W4387400612 hasConcept C19269812 @default.
- W4387400612 hasConcept C196644772 @default.
- W4387400612 hasConcept C199301463 @default.
- W4387400612 hasConcept C205649164 @default.
- W4387400612 hasConcept C2777559092 @default.
- W4387400612 hasConcept C2778027091 @default.
- W4387400612 hasConcept C3018325918 @default.
- W4387400612 hasConcept C36301306 @default.
- W4387400612 hasConcept C41008148 @default.
- W4387400612 hasConcept C60229501 @default.
- W4387400612 hasConcept C62649853 @default.
- W4387400612 hasConcept C70352696 @default.
- W4387400612 hasConcept C76155785 @default.
- W4387400612 hasConcept C79403827 @default.
- W4387400612 hasConceptScore W4387400612C107768556 @default.
- W4387400612 hasConceptScore W4387400612C11413529 @default.
- W4387400612 hasConceptScore W4387400612C121332964 @default.
- W4387400612 hasConceptScore W4387400612C127413603 @default.
- W4387400612 hasConceptScore W4387400612C1276947 @default.
- W4387400612 hasConceptScore W4387400612C13280743 @default.
- W4387400612 hasConceptScore W4387400612C14279187 @default.
- W4387400612 hasConceptScore W4387400612C146978453 @default.
- W4387400612 hasConceptScore W4387400612C177219330 @default.
- W4387400612 hasConceptScore W4387400612C19269812 @default.
- W4387400612 hasConceptScore W4387400612C196644772 @default.
- W4387400612 hasConceptScore W4387400612C199301463 @default.
- W4387400612 hasConceptScore W4387400612C205649164 @default.
- W4387400612 hasConceptScore W4387400612C2777559092 @default.
- W4387400612 hasConceptScore W4387400612C2778027091 @default.
- W4387400612 hasConceptScore W4387400612C3018325918 @default.
- W4387400612 hasConceptScore W4387400612C36301306 @default.
- W4387400612 hasConceptScore W4387400612C41008148 @default.
- W4387400612 hasConceptScore W4387400612C60229501 @default.
- W4387400612 hasConceptScore W4387400612C62649853 @default.
- W4387400612 hasConceptScore W4387400612C70352696 @default.
- W4387400612 hasConceptScore W4387400612C76155785 @default.
- W4387400612 hasConceptScore W4387400612C79403827 @default.
- W4387400612 hasLocation W43874006121 @default.
- W4387400612 hasOpenAccess W4387400612 @default.
- W4387400612 hasPrimaryLocation W43874006121 @default.
- W4387400612 hasRelatedWork W1507168133 @default.
- W4387400612 hasRelatedWork W1991183820 @default.
- W4387400612 hasRelatedWork W2030678509 @default.
- W4387400612 hasRelatedWork W2087144975 @default.
- W4387400612 hasRelatedWork W2364356564 @default.
- W4387400612 hasRelatedWork W2375040471 @default.
- W4387400612 hasRelatedWork W2617960209 @default.
- W4387400612 hasRelatedWork W3128569746 @default.
- W4387400612 hasRelatedWork W3209692170 @default.
- W4387400612 hasRelatedWork W4360887881 @default.
- W4387400612 isParatext "false" @default.
- W4387400612 isRetracted "false" @default.
- W4387400612 workType "article" @default.