| 1. Identity statement | ||||
| Reference Type | Conference Paper (Conference Proceedings) | |||
| Site | mtc-m21c.sid.inpe.br | |||
| Holder Code | isadg {BR SPINPE} ibi 8JMKD3MGPCW/3DT298S | |||
| Identifier | 8JMKD3MGP3W34R/3UHGDRE | |||
| Repository | sid.inpe.br/mtc-m21c/2019/12.10.13.05 | |||
| Last Update | 2021:03.01.15.28.05 (UTC) simone | |||
| Metadata Repository | sid.inpe.br/mtc-m21c/2019/12.10.13.05.35 | |||
| Metadata Last Update | 2021:03.01.15.28.06 (UTC) simone | |||
| Secondary Key | INPE--PRE/ | |||
| Citation Key | EspejoCosMorPauMon:2019:EqLoIo | |||
| Title | Equatorial and Low-Latitude Ionospheric Effects on GPS Signals in Space and on Ground Based Augmentation System Operations  | |||
| Year | 2019 | |||
| Access Date | 2024, May 17 | |||
| Secondary Type | PRE CI | |||
| Number of Files | 1 | |||
| Size | 73 KiB | |||
| 2. Context | ||||
| Author | 1 Espejo, Teddy M. Surco 2 Costa, Emanuel 3 Moraes, Alison de Oliveira 4 Paula, Eurico Rodrigues de 5 Monico, João Francisco Galera | |||
| Resume Identifier | 1 2 3 4 8JMKD3MGP5W/3C9JH2U | |||
| Group | 1 2 3 4 DIDAE-CGCEA-INPE-MCTIC-GOV-BR | |||
| Affiliation | 1 Pontifícia Universidade Católica do Rio de Janeiro (PUC-Rio) 2 Pontifícia Universidade Católica do Rio de Janeiro (PUC-Rio) 3 Instituto de Aeronáutica e Espaço (IAE) 4 Instituto Nacional de Pesquisas Espaciais (INPE) 5 Universidade Estadual Paulista (UNESP) | |||
| Author e-Mail Address | 1 2 3 4 eurico.paula@inpe.br | |||
| Conference Name | AGU Fall Meeting | |||
| Conference Location | San Francisco, CA | |||
| Date | 09-13 dec. | |||
| History (UTC) | 2019-12-10 13:05:35 :: simone -> administrator :: 2021-02-27 05:01:22 :: administrator -> simone :: 2019 | |||
| 3. Content and structure | ||||
| Is the master or a copy? | is the master | |||
| Content Stage | completed | |||
| Transferable | 1 | |||
| Content Type | External Contribution | |||
| Abstract | Ground Based Augmentation Systems (GBAS) have been developed to meet the safety requirements of air navigation,using differential corrections to provide higher accuracy during aircraft approach and landing operations. However, ionospheric delays and scintillation cause positioning errors that degrade the accuracy, performance and availability of Air Navigation Systems that operate using the Global Positioning System (GPS), particularly in the equatorial and low-latitude regions. The propagation and degradation of GPS signals in space due to ionospheric effects are the focus of this work, which describes a simulation model of the GPS observables. For each active communication channel between a satellite and a reference ground receiver or aircraft,the pseudorange PR, carrier phase Φ and received power C for the GPS L1 signals were simulated, considering the clock errors, ionospheric and tropospheric delays, multipath, amplitude and phase scintillation, random errors, free-space loss and antenna gains. Ionospheric delays were estimated through statistical distributions of residuals between the vertical Total Electron Content (vTEC) at associated 400-km ionospheric pierce points (IPP)estimated from the data recorded by the dual-frequency GPS receivers of the RBMC/IBGE network,and the relative vTEC estimated by the latest version of the International Reference Ionosphere (IRI). Samples of amplitude and phase scintillation were generated according to α μ probability distributions, conforming to data collected by receivers of the CIGALA/CALIBRA network, located in different geomagnetic latitudes. Next, the results from the above model were processed by algorithms to detect possible degradations in the GPS signals, isolate failures, smooth and correct acceptable ones, and transmit correction messages to aircrafts through the VDB (VHF Data Broadcast).GBAS availability was also evaluated by computing the Vertical Protection Levels (VPL). This contribution will present and discuss statistical analyses of position errors resulting from the simulation of GPS observables and GBAS operations for different combinations of geophysical parameters(solar and geomagnetic activity, geomagnetic latitude, local time and season) and scenarios. | |||
| Area | CEA | |||
| Arrangement | urlib.net > BDMCI > Fonds > Produção anterior à 2021 > DIDAE > Equatorial and Low-Latitude... | |||
| doc Directory Content | access | |||
| source Directory Content | there are no files | |||
| agreement Directory Content |
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| 4. Conditions of access and use | ||||
| data URL | http://urlib.net/ibi/8JMKD3MGP3W34R/3UHGDRE | |||
| zipped data URL | http://urlib.net/zip/8JMKD3MGP3W34R/3UHGDRE | |||
| Language | en | |||
| Target File | espejo_equatorial.pdf | |||
| User Group | simone | |||
| Reader Group | administrator simone | |||
| Visibility | shown | |||
| Update Permission | not transferred | |||
| 5. Allied materials | ||||
| Mirror Repository | urlib.net/www/2017/11.22.19.04.03 | |||
| Next Higher Units | 8JMKD3MGPCW/3ETL868 | |||
| Citing Item List | sid.inpe.br/mtc-m21/2012/07.13.14.45.35 5 | |||
| Host Collection | urlib.net/www/2017/11.22.19.04 | |||
| 6. Notes | ||||
| Empty Fields | archivingpolicy archivist booktitle callnumber copyholder copyright creatorhistory descriptionlevel dissemination doi e-mailaddress edition editor format isbn issn keywords label lineage mark nextedition notes numberofvolumes orcid organization pages parameterlist parentrepositories previousedition previouslowerunit progress project publisher publisheraddress readpermission rightsholder schedulinginformation secondarydate secondarymark serieseditor session shorttitle sponsor subject tertiarymark tertiarytype type url versiontype volume | |||
| 7. Description control | ||||
| e-Mail (login) | simone | |||
| update | ||||