Zobrazeno 1 - 10
of 79
pro vyhledávání: '"Alain Geiger"'
Publikováno v:
Sensors, Vol 14, Iss 10, Pp 18433-18453 (2014)
In sport science, Global Navigation Satellite Systems (GNSS) are frequently applied to capture athletes’ position, velocity and acceleration. Application of GNSS includes a large range of different GNSS technologies and methods. To date no study ha
Externí odkaz:
https://doaj.org/article/b6722fb2dde448b0930f13ed782d2f4d
Publikováno v:
Remote Sensing, Vol 11, Iss 15, p 1789 (2019)
We compare tropospheric delays from Global Navigation Satellite Systems (GNSS) and Synthetic Aperture Radar (SAR) Interferometry (InSAR) in a challenging mountainous environment in the Swiss Alps, where strong spatial variations of the local troposph
Externí odkaz:
https://doaj.org/article/4b025abe56814202b42cc9680f473312
Autor:
Roland Hohensinn, Alain Geiger
Publikováno v:
Sensors, Vol 18, Iss 11, p 3712 (2018)
By means of the time derivatives of Global Navigation Satellite System (GNSS) carrier-phase measurements, the instantaneous velocity of a stand-alone, single GNSS receiver can be estimated with a high precision of a few mm/s; it is feasible to even o
Externí odkaz:
https://doaj.org/article/87ce97dd49ab400ea2dd9b306d77e6d0
Autor:
Endrit Shehaj, Luca Miotti, Alain Geiger, Stefano D'Aronco, Jan D. Wegner, Gregor Moeller, Benedikt Soja, Markus Rothacher
Publikováno v:
Acta Astronautica, 204
Scopus-Elsevier
Scopus-Elsevier
Signals used for Earth observation, when travelling through the atmosphere, are sensitive to refractivity; especially high spatio-temporal variations of water vapor are difficult to model and correct. Remaining unmodeled tropospheric delays deteriora
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::a4f5df7131603a41c826d3e0b9094e98
https://doi.org/10.1016/j.actaastro.2022.10.007
https://doi.org/10.1016/j.actaastro.2022.10.007
Publikováno v:
IEEE Geoscience and Remote Sensing Letters. 19:1-5
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::fba1cb9c985ee76bb98aa30a7836eeb4
https://doi.org/10.1109/lgrs.2021.3068347
https://doi.org/10.1109/lgrs.2021.3068347
Publikováno v:
IEEE Transactions on Aerospace and Electronic Systems, 59 (2)
Currently, helicopter operations according to Instrument Flight Rules (IFR) consist of high-altitude trajectories where the probability of collision with terrain is assumed to be very low. In such high altitudes, the risk of icing has to be considere
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::d11e8f3798d09f5731c95a9f774fe793
Autor:
Benjamin Fersch, Andreas Wagner, Bettina Kamm, Endrit Shehaj, Andreas Schenk, Peng Yuan, Alain Geiger, Gregor Moeller, Bernhard Heck, Stefan Hinz, Hansjörg Kutterer, Harald Kunstmann
Tropospheric water vapor is among the most important trace gases of the Earth’s climate system and its temporal and spatial distribution is critical for the genesis of clouds and precipitation. Due to the pronounced dynamics of the atmosphere and t
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::91ba5bd7768668b6255da0322aa4f539
https://essd.copernicus.org/preprints/essd-2022-57/
https://essd.copernicus.org/preprints/essd-2022-57/
Autor:
Benjamin Fersch, Andreas Wagner, Bettina Kamm, Endrit Shehaj, Andreas Schenk, Peng Yuan, Alain Geiger, Gregor Moeller, Bernhard Heck, Stefan Hinz, Hansjörg Kutterer, Harald Kunstmann
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::66cc3cf2fbcf60d37adee91134a149a1
https://doi.org/10.5194/essd-2022-57-supplement
https://doi.org/10.5194/essd-2022-57-supplement
Publikováno v:
Advances in Space Research
This study presents a comparison of tropospheric parameters, namely zenith tropospheric delay and total refractivity calculated using meteorological measurements from a Meteodrone and Global Navigation Satellite Systems (GNSS) stations. A Meteodrone
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::e6197c0c4d2a138226d7f27fa02c6cb1
https://doi.org/10.1016/j.asr.2020.04.019
https://doi.org/10.1016/j.asr.2020.04.019
Autor:
Endrit Shehaj, Othmar Frey, Gregor Moeller, Matthias Aichinger-Rosenberger, Alain Geiger, Markus Rothacher
Atmospheric interaction with microwaves causes refraction as well as delays of electromagnetic signals. Although the effects are the same for all microwave signals including GNSS and radar, different spatio-temporal sampling of the tropospheric delay
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::184fb55181e86e6def6d395cd924779d
https://doi.org/10.5194/egusphere-egu22-4471
https://doi.org/10.5194/egusphere-egu22-4471