Zobrazeno 1 - 10
of 269
pro vyhledávání: '"Gerhard Heinzel"'
Autor:
Victor Huarcaya, Miguel Dovale Álvarez, Kohei Yamamoto, Yichao Yang, Stefano Gozzo, Pablo Martínez Cano, Moritz Mehmet, Juan José Esteban Delgado, Jianjun Jia, Gerhard Heinzel
Publikováno v:
Sensors, Vol 23, Iss 24, p 9758 (2023)
Future GRACE-like geodesy missions could benefit from adopting accelerometer technology akin to that of the LISA Pathfinder, which employed laser interferometric readout at the sub-picometer level in addition to the conventional capacitive sensing, w
Externí odkaz:
https://doaj.org/article/447a06c85b0144ca8ca75bb7567c6879
Publikováno v:
Remote Sensing, Vol 15, Iss 3, p 570 (2023)
The GRACE follow-on satellites carry the very first interspacecraft Laser Ranging Interferometer (LRI). After more than four years in orbit, the LRI outperforms the sensitivity of the conventional Microwave Instrument (MWI). However, in the current d
Externí odkaz:
https://doaj.org/article/33f5312c36b84717ba9449d760a2b6f7
Autor:
Vitali Müller, Markus Hauk, Malte Misfeldt, Laura Müller, Henry Wegener, Yihao Yan, Gerhard Heinzel
Publikováno v:
Remote Sensing, Vol 14, Iss 17, p 4335 (2022)
The GRACE Follow-On satellite mission measures distance variations between its two satellites in order to derive monthly gravity field maps, indicating mass variability on Earth on a scale of a few 100 km originating from hydrology, seismology, clima
Externí odkaz:
https://doaj.org/article/01fd0306b1cc4d3a9470754811dddc41
Autor:
Kolja Nicklaus, Kai Voss, Anne Feiri, Marina Kaufer, Christian Dahl, Mark Herding, Bailey Allen Curzadd, Andreas Baatzsch, Johanna Flock, Markus Weller, Vitali Müller, Gerhard Heinzel, Malte Misfeldt, Juan Jose Esteban Delgado
Publikováno v:
Remote Sensing, Vol 14, Iss 16, p 4089 (2022)
The precise tracking of distance variations between two satellites in low Earth orbit can provide key data for the understanding of the Earth’s system, specifically on seasonal and sub-seasonal water cycles and their impact on water levels. Measure
Externí odkaz:
https://doaj.org/article/d4a69b83e3ad439db3788b0c9c7b3728
Autor:
Yichao Yang, Kohei Yamamoto, Miguel Dovale Álvarez, Daikang Wei, Juan José Esteban Delgado, Vitali Müller, Jianjun Jia, Gerhard Heinzel
Publikováno v:
Sensors, Vol 22, Iss 5, p 2070 (2022)
The laser ranging interferometer onboard the Gravity Recovery and Climate Experiment Follow-On mission proved the feasibility of an interferometric sensor for inter-satellite length tracking with sub-nanometer precision, establishing an important mil
Externí odkaz:
https://doaj.org/article/fa3e8bbe5e934764a6c6aac8cd748a63
Publikováno v:
Sensors, Vol 21, Iss 1, p 164 (2020)
We propose to combine differential wave-front sensing (DWS) and differential power sensing (DPS) in a Mach-Zehnder type interferometer for measuring the rotational dynamics of a test-mass. Using the DWS method, a high sensitive measurement of 6 nrad
Externí odkaz:
https://doaj.org/article/db3d8c6e5ae8432fbd409af84b026340
Autor:
Yichao Yang, Kohei Yamamoto, Victor Huarcaya, Christoph Vorndamme, Daniel Penkert, Germán Fernández Barranco, Thomas S. Schwarze, Moritz Mehmet, Juan Jose Esteban Delgado, Jianjun Jia, Gerhard Heinzel, Miguel Dovale Álvarez
Publikováno v:
Sensors, Vol 20, Iss 17, p 4986 (2020)
Tracking moving masses in several degrees of freedom with high precision and large dynamic range is a central aspect in many current and future gravitational physics experiments. Laser interferometers have been established as one of the tools of choi
Externí odkaz:
https://doaj.org/article/4507a8f6d64544d49faf11c0fcb7c262
Autor:
Vitali Müller, Malte Misfeldt, Laura Müller, Martin Weberpals, Kai Voss, Kolja Nicklaus, Gerhard Heinzel
The next generation of gravimetric satellite missions will likely utilize a single laser-based instrument to track distance variations between the satellites in a pair. These variations are used to derive the monthly average of Earth’s gravity fiel
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f03eb8d57579c2c8c0304c0b3e1ab30d
https://doi.org/10.5194/egusphere-egu23-12725
https://doi.org/10.5194/egusphere-egu23-12725
GRACE and GRACE-FO mapped the monthly time-variable gravity fields with a spatial resolution of ~300km over the past two decades, providing information on mass transport in the Earth system. The twin spacecraft can sense the gravity variability from
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::cda5f48a8a307bb63f11f830f34173fd
https://doi.org/10.5194/egusphere-egu23-13839
https://doi.org/10.5194/egusphere-egu23-13839
The GRACE-FO mission (2018-now) hosts the novel Laser Ranging Interferometer (LRI) that measures the inter-satellite distance with a previously unprecedented precision of better than 200 pm/sqrt(Hz) at Fourier frequencies above 1 Hz. Gravity informat
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d13185128a5a580455c924fe5374551c
https://doi.org/10.5194/egusphere-egu23-9131
https://doi.org/10.5194/egusphere-egu23-9131