Zobrazeno 1 - 10
of 13
pro vyhledávání: '"Arvid Hammar"'
Autor:
Dae Wook Kim, Arvid Hammar, Soojong Pak, Yunjong Kim, Sunwoo Lee, Geon Hee Kim, Hojae Ahn, Byeongjoon Jeong, Woojin Park, Hyoungkwon Lee, Jae Hyuk Lim, Seunghyuk Chang, Sanghyuk Kim
We present the development of Linear Astigmatism Free - Three Mirror System (LAF-TMS). This is a prototype of an off-axis telescope that enables very wide field of view (FoV) infrared satellites that can observe Paschen-$\alpha$ emission, zodiacal li
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::90cb2a32f0ec7c221ab93687e3dc7f47
Publikováno v:
Applied optics. 58(6)
We present the development of a compact f/7.3 (D=35 mm) three-mirror reflective telescope for the atmospheric-research microsatellite Mesospheric Airglow/Aerosol Tomography Spectroscopy (MATS). The telescope design was driven by the end users’ need
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::bf93e9890bf884fa2fe224061ff73314
https://pubmed.ncbi.nlm.nih.gov/30874023
https://pubmed.ncbi.nlm.nih.gov/30874023
Autor:
Jörg Gumbel, Linda Megner, Ole Martin Christensen, Seunghyuk Chang, Joachim Dillner, Terese Ekebrand, Gabriel Giono, Arvid Hammar, Jonas Hedin, Nickolay Ivchenko, Bodil Karlsson, Mikael Kruse, Anqi Li, Steven McCallion, Donal P. Murtagh, Georgi Olentšenko, Soojong Pak, Woojin Park, Jordan Rouse, Jacek Stegman, Georg Witt
Global three-dimensional data are a key to understanding gravity waves in the mesosphere and lower thermosphere. MATS (Mesospheric Airglow/Aerosol Tomography and Spectroscopy) is a new Swedish satellite mission that addresses this need. It applies sp
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::f8402c86f73f52aa0d101d6d441a9d89
https://doi.org/10.5194/acp-2018-1162
https://doi.org/10.5194/acp-2018-1162
Autor:
Soojong Pak, Linda Megner, Joerg Gumbel, Seunghyuk Chang, Arvid Hammar, Jordan Rouse, Ole Martin Christensen, Woojin Park, Dae Wook Kim
Publikováno v:
Applied Optics. 59:5335
We present optical characterization, calibration, and performance tests of the Mesospheric Airglow/Aerosol Tomography Spectroscopy (MATS) satellite, which for the first time for a satellite applies a linear-astigmatism-free confocal off-axis reflecti
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::afc5afdaf88dd949da43c571931f8a59
https://doi.org/10.1364/ao.392187
https://doi.org/10.1364/ao.392187
Publikováno v:
Optical Design and Testing VIII.
In this study, simulations and measurements were used to investigate stray light properties of the three-mirror off-axis telescope of a new satellite for atmospheric research called Mesospheric Airglow/Aerosol Tomography Spectroscopy (MATS). A 700 mm
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c8f5174308584ec98d30e9710f3f0708
https://doi.org/10.1117/12.2500555
https://doi.org/10.1117/12.2500555
Autor:
Linda Megner, U. Frisk, Jörg Gumbel, Arvid Hammar, Georgi Olentsenko, Ole Martin Christensen, I. Davies, Gabriel Giono, Nickolay Ivchenko
Publikováno v:
Space Telescopes and Instrumentation 2018: Optical, Infrared, and Millimeter Wave.
The MATS satellite aims at observing airglow and noctilucent clouds in the mesosphere. The main instrument consists of a six channels limb imager in the near-ultraviolet and near-infrared. A high signal-to-noise ratio is required for detecting these
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::355b98ee2701bd4aced7dd0a92657c68
https://doi.org/10.1117/12.2313732
https://doi.org/10.1117/12.2313732
Autor:
Joel Schleeh, Arvid Hammar, Anders Emrich, Niklas Wadefalk, Jan Stake, Peter Sobis, Vladimir Drakinskiy
Publikováno v:
The Review of scientific instruments. 89(5)
We report on the development of two 874 GHz receiver channels with orthogonal polarizations for the international submillimetre airborne radiometer. A spline horn antenna and dielectric lens, a Schottky diode mixer circuit, and an intermediate freque
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::bb136a3911484b70a2bec2988d1f762c
https://pubmed.ncbi.nlm.nih.gov/29864874
https://pubmed.ncbi.nlm.nih.gov/29864874
Autor:
Arvid Hammar, Stella Bevilacqua, Alexey Kalabukhov, Serguei Cherednichenko, Jan Stake, Vladimir Drakinskiy
Publikováno v:
IEEE Transactions on Terahertz Science and Technology. 1:395-402
We present a novel room temperature bolometer with nanosecond response that can be used both for coherent and incoherent detection through the entire terahertz frequency range. A responsivity of up to 15 V/W, and a noise equivalent power (NEP) ~ 450
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b91ce5f155e318c1426b1de546ab7844
https://doi.org/10.1109/tthz.2011.2164654
https://doi.org/10.1109/tthz.2011.2164654
Publikováno v:
IEEE Transactions on Terahertz Science and Technology. 1:390-394
A high sensitivity broadband terahertz direct detector based on YBa2Cu3O7 high-Tc superconductor microbolometers is presented. At 77 K, the responsivity of the spiral antenna-integrated microbolometers (1.5 μm ×1.5 μm) is 190 V/W, referenced to th
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::fc16b9a0469ec8f36582224cd89d29ca
https://doi.org/10.1109/tthz.2011.2161050
https://doi.org/10.1109/tthz.2011.2161050
Publikováno v:
2014 39th International Conference on Infrared, Millimeter, and Terahertz waves (IRMMW-THz).
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e98522f71ad1996f5fe939671ee2f254
https://doi.org/10.1109/irmmw-thz.2014.6956007
https://doi.org/10.1109/irmmw-thz.2014.6956007