Zobrazeno 1 - 10
of 52
pro vyhledávání: '"GPS Block IIF"'
Publikováno v:
Sensors, Vol 21, Iss 6, p 2046 (2021)
Due to its nature, Precise Point Positioning (PPP) depends on the GNSS measurements and quality of satellite correction products used to relatively quickly provide precise and accurate positions. With the rapid evolution of Global Navigation Satellit
Externí odkaz:
https://doaj.org/article/cea88ffdaabb4a2d998174a0b47e81e4
How modernized and strengthened GPS signals enhance the system performance during solar radio bursts
Publikováno v:
GPS Solutions
GPS Solutions, Springer Verlag, 2021, 25 (2), ⟨10.1007/s10291-021-01091-5⟩
GPS Solutions, Springer Verlag, 2021, 25 (2), ⟨10.1007/s10291-021-01091-5⟩
A Solar Radio Burst (SRB) is one of the most severe natural hazards affecting the performance of the global navigation satellite systems (GNSS). Considering the influence of different threat factors, the GNSS developers upgrade the systems to amend t
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::e423fc3954a1a5bf93411518df9e3e0e
https://hal.archives-ouvertes.fr/hal-03376004/file/GPS_solutions.pdf
https://hal.archives-ouvertes.fr/hal-03376004/file/GPS_solutions.pdf
Autor:
Santosh Bhattarai, Grace Li
We present the status of our work on producing a new high-precision, physics-based radiation force model for the GPS IIF spacecraft. The details of the spacecraft model, i.e. geometry and surface material properties, are given. The methods used to bu
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f780b17fc61f30d5b5723868583e5f3c
https://doi.org/10.5194/egusphere-egu21-12544
https://doi.org/10.5194/egusphere-egu21-12544
Publikováno v:
Sensors, Vol 21, Iss 2046, p 2046 (2021)
Sensors (Basel, Switzerland)
Sensors
Volume 21
Issue 6
Sensors (Basel, Switzerland)
Sensors
Volume 21
Issue 6
Due to its nature, Precise Point Positioning (PPP) depends on the GNSS measurements and quality of satellite correction products used to relatively quickly provide precise and accurate positions. With the rapid evolution of Global Navigation Satellit
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::4dd981de985e5568c36f95304feadce0
https://www.mdpi.com/1424-8220/21/6/2046
https://www.mdpi.com/1424-8220/21/6/2046
Autor:
Yufei Yang, Su Mudan, Xiaogong Hu, Chengpan Tang, Rui Guo, Junyi Xu, Zhanshi Zhou, Junyang Pan, Yuanxi Yang
Publikováno v:
GPS Solutions. 25
The BeiDou navigation satellite system (BDS) tracks medium earth orbit (MEO) satellites using only regional tracking stations in China. As a result, the broadcast clock accuracy of the MEO satellites decreases rapidly during the invisible arcs becaus
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::39aa1209c17273a684b92ffceabe4343
https://doi.org/10.1007/s10291-020-01067-x
https://doi.org/10.1007/s10291-020-01067-x
Publikováno v:
Proceedings of the 33rd International Technical Meeting of the Satellite Division of The Institute of Navigation (ION GNSS+ 2020).
The modernized GPS satellites, Block IIR-M, and follow-on GPS satellites, Block IIF, can redistribute the transmit power between the signal components. This is called flex power and it has been developed as a remedy against jamming. From January 2017
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::7ec6f5a795fbbfafb00d8cc2f7471fd5
https://doi.org/10.33012/2020.17634
https://doi.org/10.33012/2020.17634
Autor:
Esenbuğa, Özge Gizem, Hauschild, André, Deutsches Zentrum für Luft- und Raumfahrt, German Space Operations Center, Wessling, Germany
Publikováno v:
GPS Solutions. 24
GPS Block IIF satellites are able to redistribute the transmit power between the signal components. This ability is called flex power, and it has been developed as a remedy against jamming. Since it is operationally not possible to increase the trans
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::2d12b65ff44feb3ca386c6a17bd10897
https://doi.org/10.1007/s10291-020-00996-x
https://doi.org/10.1007/s10291-020-00996-x
Publikováno v:
Advances in Space Research. 61:2942-2954
To meet the increasing demands from the real-time Precise Point Positioning (PPP) users, the real-time satellite orbit and clock products are generated by different International GNSS Service (IGS) real-time analysis centers and can be publicly recei
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::9ffc9ff9a5ec2778c3b76c2abecc4dce
https://doi.org/10.1016/j.asr.2018.03.029
https://doi.org/10.1016/j.asr.2018.03.029
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Publikováno v:
GPS Solutions. 23
New satellites and signals become available with the modernization of GNSS, especially for Galileo and BDS. The current Galileo constellation comprises 4 IOV (in-orbit validation) and 14 FOC (full operational capability) satellites which transmit sig
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::2bd891dcdf7520f978bad085f7e11661
https://doi.org/10.1007/s10291-019-0831-5
https://doi.org/10.1007/s10291-019-0831-5