| 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/44D5SJ2 | |||
| Repository | sid.inpe.br/mtc-m21c/2021/03.25.18.27 | |||
| Metadata Repository | sid.inpe.br/mtc-m21c/2021/03.25.18.27.12 | |||
| Metadata Last Update | 2022:04.03.19.25.19 (UTC) administrator | |||
| Secondary Key | INPE--PRE/ | |||
| Citation Key | SallesVaSoSiMoMoPa:2021:TeFaCh | |||
| Title | Temporal fading characteristics at low latitude regions for GPS triple frequency users  | |||
| Year | 2021 | |||
| Access Date | 2024, June 25 | |||
| Secondary Type | PRE CN | |||
| 2. Context | ||||
| Author | 1 Salles, L. A. 2 Vani, B. C. 3 Sousasantos, J. 4 Silva, A. L. A. 5 Moares, A. O. 6 Monico, J. F. G. 7 Paula, Eurico Rodrigues de | |||
| Resume Identifier | 1 2 3 4 5 6 7 8JMKD3MGP5W/3C9JH2U | |||
| Group | 1 2 3 4 5 6 7 DIHPA-CGCE-INPE-MCTI-GOV-BR | |||
| Affiliation | 1 Instituto Tecnológico de Aeronáutica (ITA) 2 Instituto Federal de São Paulo (IFSP) 3 Instituto Tecnológico de Aeronáutica (ITA) 4 Instituto Tecnológico de Aeronáutica (ITA) 5 Instituto de Aeronáutica e Espaço (IAE) 6 Universidade Estadual Paulista (UNESP) 7 Instituto Nacional de Pesquisas Espaciais (INPE) | |||
| Author e-Mail Address | 1 2 3 4 5 6 7 eurico.paula@inpe.br | |||
| Conference Name | Simpósio Brasileiro de Geofísica Espacial e Aeronomia, 8 (SBGEA) | |||
| Conference Location | Online | |||
| Date | 22-26 mar. | |||
| History (UTC) | 2021-03-25 18:27:12 :: simone -> administrator :: 2022-04-03 19:25:19 :: administrator -> simone :: 2021 | |||
| 3. Content and structure | ||||
| Is the master or a copy? | is the master | |||
| Content Stage | completed | |||
| Transferable | 1 | |||
| Content Type | External Contribution | |||
| Abstract | The ionospheric scintillation phenomenon has serious consequences on the communication systems. In particular, special attention has been given to GNSS systems with an emphasis on aeronautical applications. Scintillation causes attenuation in the amplitude and signal phase shifts, hence, its occurrence threaten the system operability, by causing loss of lock in the receiver, incorrect measurements that decreases the navigation performance and, in more severe cases, total loss of positioning. In the last decade, the GPS constellation has been modernized with the introduction of new codes/frequencies for more accurate operation through the L2C and L5 frequencies. The motivation for this modernization is the use of GPS for critical applications involving civil aviation and defense systems. The aim of this study is to perform a comparative analysis of the effects of ionospheric scintillation on GPS signals in order to characterize the fading effects on the received signal amplitude at the three frequencies, L1, L2C and L5. Data used in this analysis was collected by 50Hz scintillation monitors in four cities along the Brazilian territory: Fortaleza, Presidente Prudente, Sao Jos´e dos Campos and Porto Alegre. The analysis period was between November 2014 and March 2015, during the maximum solar activity of cycle 24. In the analysis, a particular focus was given to measure the frequency of occurrence and the typical duration of the fading events in the L2C and L5 signals in comparison to the L1 (legacy signal). Three fading threshold were chosen -9 dB, -12 dB, and -15 dB. The number of fading events in all locations increased substantially, reaching up to 200% more occurrences in some cases. The results confirm previous works in the literature showing that L2C and L5 signals are more vulnerable to availability issues due to the occurrence of scintillation. | |||
| Area | CEA | |||
| Arrangement | urlib.net > CGCE > Temporal fading characteristics... | |||
| doc Directory Content | there are no files | |||
| source Directory Content | there are no files | |||
| agreement Directory Content |
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| 4. Conditions of access and use | ||||
| Language | en | |||
| User Group | simone | |||
| Visibility | shown | |||
| Update Permission | not transferred | |||
| 5. Allied materials | ||||
| Next Higher Units | 8JMKD3MGPCW/46KTFK8 | |||
| 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 mirrorrepository nextedition notes numberoffiles numberofvolumes orcid organization pages parameterlist parentrepositories previousedition previouslowerunit progress project publisher publisheraddress readergroup readpermission rightsholder schedulinginformation secondarydate secondarymark serieseditor session shorttitle size sponsor subject targetfile tertiarymark tertiarytype type url versiontype volume | |||
| 7. Description control | ||||
| e-Mail (login) | simone | |||
| update | ||||