Zobrazeno 1 - 10
of 27
pro vyhledávání: '"Axel von Engeln"'
Autor:
M. Mainul Hoque, Liangliang Yuan, Fabricio S. Prol, Manuel Hernández-Pajares, Riccardo Notarpietro, Norbert Jakowski, German Olivares Pulido, Axel Von Engeln, Christian Marquardt
Publikováno v:
Remote Sensing, Vol 15, Iss 5, p 1424 (2023)
The radio occultation (RO) measurements of the Global Navigation Satellite System’s (GNSS’s) signals onboard a Low Earth Orbiting (LEO) satellite enable the computation of the vertical electron density profile from the LEO satellite’s orbit hei
Externí odkaz:
https://doaj.org/article/40d3d294804f42cb95bbc6564a09fe0d
Autor:
Fabricio S. Prol, M. Mainul Hoque, Manuel Hernández-Pajares, Liangliang Yuan, Germán Olivares-Pulido, Axel von Engeln, Christian Marquardt, Riccardo Notarpietro
Publikováno v:
Remote Sensing, Vol 15, Iss 6, p 1663 (2023)
In this work, a dedicated campaign by MetOp-A satellite is conducted to monitor the ionosphere based on radio-occultation (RO) measurements provided by the onboard GNSS (Global Navigation Satellite System) Receiver for Atmospheric Sounding (GRAS). Th
Externí odkaz:
https://doaj.org/article/e9ce85ac30dd4d0ea304b77761615986
Publikováno v:
The International Technical Meeting of the The Institute of Navigation.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::6185dd802573432a6bd2bb34048af097
https://doi.org/10.33012/2022.18168
https://doi.org/10.33012/2022.18168
Autor:
Florence Mutonyi D'ujanga, Richard Cliffe Ssenyunzi, Bosco Oruru, Stefano Barindelli, Axel von Engeln, Eugenio Realini, Nick van de Giesen, Giulio Tagliaferro
Publikováno v:
Advances in Space Research, 65(8)
Advances in Space Research
Advances in Space Research
The accuracy of surface meteorological measurements is vital to derive accurate Global Positioning System (GPS) Precipitable Water Vapour (PWV) data. However, in absence of surface meteorological data, data from Numerical Weather Prediction Models (N
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::8a3bf8a3f22eef711eb78456989ab2ee
http://resolver.tudelft.nl/uuid:6630d719-3a84-47c8-a5f1-a31fa412a10d
http://resolver.tudelft.nl/uuid:6630d719-3a84-47c8-a5f1-a31fa412a10d
Publikováno v:
Proceedings of the 32nd International Technical Meeting of the Satellite Division of The Institute of Navigation (ION GNSS+ 2019).
The propagation of electromagnetic waves emitted from ground-based transmitters is influenced by the stratification of the atmosphere. In extreme superrefractive situations characterized by strong temperature inversions or strong vertical gradients o
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::7ee7bfcf89eaad6ccbf4642f2b2de7f4
https://doi.org/10.33012/2019.16892
https://doi.org/10.33012/2019.16892
Autor:
Axel von Engeln, Remko Scharroo, Francois Parisot, Kristiaan de Vriendt, Hans Bonekamp, Milen Tahtadjiev, Christelle Ponsard, Francois Montagner
Publikováno v:
Ocean Science, Vol 12, Iss 2, Pp 471-479 (2016)
The Sentinel-6 mission is proposed as a multi-partner programme to continue the Jason satellite altimeter data services beyond the Jason-2 and Jason-3 missions. The Sentinel-6 mission programme consists of two identical satellites flying in sequence
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::aba8062529e172bf447464ffe448e97d
http://www.ocean-sci.net/12/471/2016/os-12-471-2016.pdf
http://www.ocean-sci.net/12/471/2016/os-12-471-2016.pdf
Autor:
Riccardo Notarpietro, Miquel Garcia-Fernandez, Antonio Rius, Manuel Hernández-Pajares, Axel von Engeln, Yannick Beniguel
The Radio Occultation instrument at the upcoming EUMETSAT Polar System – Second Generation (EPS-SG) mission will be devoted primarily to monitor the neutral atmosphere through this payload, consisting of a GNSS receiver and occultation antennae poi
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::522bf98d4d0e585ac1f2691845133ac1
https://doi.org/10.5194/amt-2017-217
https://doi.org/10.5194/amt-2017-217
Autor:
João Paulo Teixeira, Axel von Engeln
Publikováno v:
Journal of Climate. 26:6575-6590
A planetary boundary layer (PBL) height climatology from ECMWF reanalysis data is generated and analyzed. Different methods are first compared to derive PBL heights from atmospheric temperature, pressure, and relative humidity (RH), which mostly make
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::74b0444878e9a815fec681cd9f4a0167
https://doi.org/10.1175/jcli-d-12-00385.1
https://doi.org/10.1175/jcli-d-12-00385.1
Publikováno v:
Proceedings of the 29th International Technical Meeting of The Satellite Division of the Institute of Navigation (ION GNSS+ 2016).
This paper defines a parametric threat model for tropospheric duct anomalies based on ten years of tropospheric data. It is shown that tropospheric ducts can produce differential ranging errors on the order of 10 cm. Furthermore, the probability of o
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::28ba2fa81c8d8ced8c61bf0a965b0478
https://doi.org/10.33012/2016.14662
https://doi.org/10.33012/2016.14662
Publikováno v:
GPS Solutions. 17:199-209
The processing of GPS radio occultation measurements for use in numerical weather predictions requires a precise orbit determination (POD) of the host satellite in near-real-time. Making use of data from the GRAS instrument on Metop-A, the performanc
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::897e77bc377acdb9ace484af247032cf
https://doi.org/10.1007/s10291-012-0271-y
https://doi.org/10.1007/s10291-012-0271-y