Zobrazeno 1 - 10
of 31
pro vyhledávání: '"Tim Flohrer"'
Autor:
Michael A. Steindorfer, Georg Kirchner, Franz Koidl, Peiyuan Wang, Beatriz Jilete, Tim Flohrer
Publikováno v:
Nature Communications, Vol 11, Iss 1, Pp 1-6 (2020)
Space debris laser ranging is a technique to measure distances to defunct satellites or rocket bodies in orbits around Earth which was only possible within a few hours around twilight. Here, the authors show the first space debris laser ranging resul
Externí odkaz:
https://doaj.org/article/6f36f6c913cd4dc2b8fd56dad72aeaf8
Publikováno v:
Acta Astronautica. 182:310-324
Untracked space debris is the principal threat to operational satellites’ functioning whose services have become a fundamental part of our daily life. Though some specialised sensors can detect objects down to sub-cm sizes in geostationary Earth or
Autor:
Arttu Raja-Halli, Jouni Peltoniemi, Olli Wilkman, Jyri Näränen, Maria Gritsevich, Andrea Di Mira, Tim Flohrer, Markku Poutanen
Publikováno v:
Advances in Space Research. 67:1721-1732
Since realising the idea that a man-made object can be intentionally placed into the Earth’s orbit, almost 10,000 satellites have been launched for multiple scientific, commercial and military purposes. These activities produce a huge amount of jun
Publikováno v:
Nature Communications, Vol 11, Iss 1, Pp 1-6 (2020)
Nature Communications
Nature Communications
Satellite laser ranging allows to measure distances to satellites equipped with retroreflectors in orbits up to 36000 km. Utilizing a higher powered laser, space debris laser ranging detects diffuse reflections from defunct satellites or rocket bodie
Autor:
Stefan, Scharring, Heiko, Dreyer, Gerd, Wagner, Jürgen, Kästel, Paul, Wagner, Ewan, Schafer, Wolfgang, Riede, Christoph, Bamann, Urs, Hugentobler, Pawel, Lejba, Tomasz, Suchodolski, Egon, Döberl, Dietmar, Weinzinger, Wolfgang, Promper, Tim, Flohrer, Srinivas, Setty, Igor, Zayer, Andrea, Di Mira, Emiliano, Cordelli
Publikováno v:
Applied optics. 60(31)
A conceptual study has been carried out on laser station networks to enhance Space Situational Awareness and contribute to collision avoidance in the low Earth orbit by high-precision laser tracking of debris objects and momentum transfer via photon
Autor:
Emiliano Cordelli, Andrea Di Mira, Tim Flohrer, Srinivas Setty, Igor Zayer, Stefan Scharring, Heiko Dreyer, Gerd Wagner, Jürgen Kästel, Ewan Schafer, Paul Wagner, Wolfgang Riede, Christoph Bamann, Urs Hugentobler, Pawel Lejba, Tomasz Suchodolski, Egon Döberl, Dietmar Weinzinger, Wolfgang Promper
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::511d4157547d2c54448ab2d79ff39f47
https://elib.dlr.de/145200/
https://elib.dlr.de/145200/
Autor:
Tim Flohrer, Jan Siminski
Publikováno v:
Advances in Space Research. 64:1423-1431
A major challenge when maintaining a space object catalog is the proper association of new measurements to already cataloged objects. Optical observations are typically associated by comparing the modeled observation to the measured one. The modeled
Publikováno v:
Journal of Space Safety Engineering. 6:197-200
This paper describes selected current and planned optical (both passive and laser ranging) and radar observations data acquisition campaigns conducted by ESA's SSA Programme. One of these initiatives comprises the qualification of optical sensors. Fi
Autor:
Tim Flohrer, Astrid Veronig, Elena Petrova, Stijn Lemmens, Benjamin Bastida Virgili, Tatiana Podladchikova
The solar radio flux at F10.7 cm and F30 cm is required by most models characterizing the state of the Earth's upper atmosphere, such as the thermosphere and ionosphere to specify satellite orbits, re-entry services, collision avoidance maneuvers and
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::3559a94b0360353c608526be4f7bf19f
Publikováno v:
Reihs, Benedikt; Vananti, Alessandro; Schildknecht, Thomas; Siminski, Jan A.; Flohrer, Tim (2021). Application of attributables to the correlation of surveillance radar measurements. Acta astronautica, 182, pp. 399-415. Elsevier 10.1016/j.actaastro.2021.01.059
Space surveillance by radar is especially used for the low Earth orbit to maintain a database, also called catalogue, of objects on orbit. Among others, surveillance radars which are constantly scanning a region of interest in the sky are used for th
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::f0646793bb197dc1fe22a24d04ad93b2
http://arxiv.org/abs/2009.07559
http://arxiv.org/abs/2009.07559