FRINK Linked Data Fragments server

Matches in SemOpenAlex for { <https://semopenalex.org/work/W2550882647> ?p ?o ?g. }

• W2550882647 abstract "In Civil Aviation domain, to cope with the increasing traffic demand, research activities are pointed toward the optimization of the airspace capacity. Researches are thus ongoing on all Civil Aviation areas: Communication, Navigation, Surveillance (CNS) and Air Traffic Management (ATM). Focusing on the navigation aspect, the goals are expected to be met by improving performances of the existing services through the developments of new NAVigation AIDS (NAVAIDS) and the definition of new procedures based on these new systems. The Global Navigation Satellite System (GNSS) is recognized as a key technology in providing accurate navigation services with a worldwide coverage. The GNSS concept was defined by the International Civil Aviation Organization (ICAO). A symbol of its importance, in civil aviation, can be observed in the avionics of new civil aviation aircraft since a majority of them are now equipped with GNSS receivers. The GNSS concept includes the provision of an integrity monitoring function by an augmentation system in addition to the core constellations. This is needed to meet all the required performance metrics of accuracy, integrity, continuity and availability which cannot be met by the stand-alone constellations such as GPS. Three augmentation systems have been developed within civil aviation: the GBAS (Ground Based Augmentation System), the SBAS (Satellite Based Augmentation System) and the ABAS (Aircraft Based Augmentation System). GBAS, in particular, is currently standardized to provide precision approach navigation services down to Category I (CAT I) using GPS or Glonass constellations and L1 band signals. This service is known as GBAS Approach Service Type-C (GAST-C). In order to extend this concept down to CAT II/III service, research activities is ongoing to define the new service called a GAST-D. Among other challenges, the monitoring of the ionospheric threat is the area where the integrity requirement is not met. Thanks to the deployment of new constellations, Galileo and Beidou, and the modernization process of the existing ones, GPS and Glonass, the future of GNSS is envisaged to be Multi-Constellation (MC) and Multi-frequency (MF). In Europe, research activities have been focused on a Dual-Constellation (DC) GNSS and DC GBAS services based on GPS and Galileo constellations. Moreover, to overcome the problems experienced by Single-Frequency (SF) GBAS due to ionosphere anomalies, the use of two frequencies (Dual Frequency, DF) has been selected as a mean to improve ionosphere anomalies detection and to mitigate ionosphere residual errors. Advantages in using a DC/DF GBAS (GAST-F) system are, however, not only related to the integrity monitoring performance improvement. Benefits, brought by DC and DF, are also related to •the robustness of the entire system against unintentional interference thanks to the use of measurements in two protected frequency bands, •the robustness against a constellation failure, •the accuracy improvement by using new signals with improved performance, and more satellites. However, the use of new signals and a new constellation, does not bring only benefits. It also raises a series of challenges that have to be solved to fully benefit from the new concept. In this thesis, some challenges, related to DC/DF GBAS, have been investigated. One of them, rising from the use of new GNSS signals, is to determine the impact of error sources that are uncorrelated between the ground station and the aircraft and that induce an error on the estimated position. Using two frequencies, there is the possibility to form measurement combinations like Divergence-free (D-free) and Ionosphere-free (I-free) for which the errors impact has to be analyzed. In this thesis, the impact of the uncorrelated errors (noise and multipath as main sources) on ground measurements is analyzed. The aim is to compare the derived performances with the curve proposed in (RTCA,Inc DO-253C, 2008) for the" @default.
• W2550882647 created "2016-11-30" @default.
• W2550882647 creator A5019784721 @default.
• W2550882647 date "2016-12-12" @default.
• W2550882647 modified "2023-09-23" @default.
• W2550882647 title "Processing and Integrity of DC/DF GBAS for CAT II/III Operations" @default.
• W2550882647 hasPublicationYear "2016" @default.
• W2550882647 type Work @default.
• W2550882647 sameAs 2550882647 @default.
• W2550882647 citedByCount "0" @default.
• W2550882647 crossrefType "dissertation" @default.
• W2550882647 hasAuthorship W2550882647A5019784721 @default.
• W2550882647 hasConcept C102451475 @default.
• W2550882647 hasConcept C121332964 @default.
• W2550882647 hasConcept C127413603 @default.
• W2550882647 hasConcept C1276947 @default.
• W2550882647 hasConcept C14279187 @default.
• W2550882647 hasConcept C144133560 @default.
• W2550882647 hasConcept C146978453 @default.
• W2550882647 hasConcept C15792166 @default.
• W2550882647 hasConcept C162853370 @default.
• W2550882647 hasConcept C166212672 @default.
• W2550882647 hasConcept C166961238 @default.
• W2550882647 hasConcept C201995342 @default.
• W2550882647 hasConcept C2780378061 @default.
• W2550882647 hasConcept C36301306 @default.
• W2550882647 hasConcept C41008148 @default.
• W2550882647 hasConcept C504623915 @default.
• W2550882647 hasConcept C512918668 @default.
• W2550882647 hasConcept C60229501 @default.
• W2550882647 hasConcept C70352696 @default.
• W2550882647 hasConcept C74448152 @default.
• W2550882647 hasConcept C76155785 @default.
• W2550882647 hasConcept C94821174 @default.
• W2550882647 hasConceptScore W2550882647C102451475 @default.
• W2550882647 hasConceptScore W2550882647C121332964 @default.
• W2550882647 hasConceptScore W2550882647C127413603 @default.
• W2550882647 hasConceptScore W2550882647C1276947 @default.
• W2550882647 hasConceptScore W2550882647C14279187 @default.
• W2550882647 hasConceptScore W2550882647C144133560 @default.
• W2550882647 hasConceptScore W2550882647C146978453 @default.
• W2550882647 hasConceptScore W2550882647C15792166 @default.
• W2550882647 hasConceptScore W2550882647C162853370 @default.
• W2550882647 hasConceptScore W2550882647C166212672 @default.
• W2550882647 hasConceptScore W2550882647C166961238 @default.
• W2550882647 hasConceptScore W2550882647C201995342 @default.
• W2550882647 hasConceptScore W2550882647C2780378061 @default.
• W2550882647 hasConceptScore W2550882647C36301306 @default.
• W2550882647 hasConceptScore W2550882647C41008148 @default.
• W2550882647 hasConceptScore W2550882647C504623915 @default.
• W2550882647 hasConceptScore W2550882647C512918668 @default.
• W2550882647 hasConceptScore W2550882647C60229501 @default.
• W2550882647 hasConceptScore W2550882647C70352696 @default.
• W2550882647 hasConceptScore W2550882647C74448152 @default.
• W2550882647 hasConceptScore W2550882647C76155785 @default.
• W2550882647 hasConceptScore W2550882647C94821174 @default.
• W2550882647 hasLocation W25508826471 @default.
• W2550882647 hasOpenAccess W2550882647 @default.
• W2550882647 hasPrimaryLocation W25508826471 @default.
• W2550882647 hasRelatedWork W147291211 @default.
• W2550882647 hasRelatedWork W1576000626 @default.
• W2550882647 hasRelatedWork W192440221 @default.
• W2550882647 hasRelatedWork W1969585179 @default.
• W2550882647 hasRelatedWork W2046902779 @default.
• W2550882647 hasRelatedWork W2398140571 @default.
• W2550882647 hasRelatedWork W2484469265 @default.
• W2550882647 hasRelatedWork W2516835863 @default.
• W2550882647 hasRelatedWork W2532602026 @default.
• W2550882647 hasRelatedWork W2562414104 @default.
• W2550882647 hasRelatedWork W2564033589 @default.
• W2550882647 hasRelatedWork W2595875137 @default.
• W2550882647 hasRelatedWork W2602504051 @default.
• W2550882647 hasRelatedWork W2603324647 @default.
• W2550882647 hasRelatedWork W2615392479 @default.
• W2550882647 hasRelatedWork W2767999691 @default.
• W2550882647 hasRelatedWork W2889773185 @default.
• W2550882647 hasRelatedWork W2946547517 @default.
• W2550882647 hasRelatedWork W3162782319 @default.
• W2550882647 hasRelatedWork W3205787550 @default.
• W2550882647 isParatext "false" @default.
• W2550882647 isRetracted "false" @default.
• W2550882647 magId "2550882647" @default.
• W2550882647 workType "dissertation" @default.