This title appears in the Scientific Report :
2018
Please use the identifier:
http://dx.doi.org/10.5194/amt-11-3861-2018 in citations.
Please use the identifier: http://hdl.handle.net/2128/19798 in citations.
A highly miniaturized satellite payload based on a spatial heterodyne spectrometer for atmospheric temperature measurements in the mesosphere and lower thermosphere
A highly miniaturized satellite payload based on a spatial heterodyne spectrometer for atmospheric temperature measurements in the mesosphere and lower thermosphere
A highly miniaturized limb sounder for the observation of the O2 A-band to derive temperatures in the mesosphere and lower thermosphere is presented. The instrument consists of a monolithic spatial heterodyne spectrometer (SHS), which is able to resolve the rotational structure of the R-branch of th...
Saved in:
Personal Name(s): | Kaufmann, Martin (Corresponding author) |
---|---|
Olschewski, Friedhelm / Mantel, Klaus / Solheim, Brian / Shepherd, Gordon / Deiml, Michael / Liu, Jilin / Song, Rui / Chen, Qiuyu / Wroblowski, Oliver / Wei, Daikang / Zhu, Yajun / Wagner, Friedrich / Loosen, Florian / Fröhlich, Denis / Neubert, Tom / Rongen, Heinz / Knieling, Peter / Toumpas, Panos / Shan, Jinjun / Tang, Geshi / Koppmann, Ralf / Riese, Martin | |
Contributing Institute: |
Stratosphäre; IEK-7 Zentralinstitut für Elektronik; ZEA-2 |
Published in: | Atmospheric measurement techniques, 11 (2018) 7, S. 3861 - 3870 |
Imprint: |
Katlenburg-Lindau
Copernicus
2018
|
DOI: |
10.5194/amt-11-3861-2018 |
Document Type: |
Journal Article |
Research Program: |
Composition and dynamics of the upper troposphere and middle atmosphere |
Link: |
Get full text OpenAccess Get full text OpenAccess |
Publikationsportal JuSER |
Please use the identifier: http://hdl.handle.net/2128/19798 in citations.
A highly miniaturized limb sounder for the observation of the O2 A-band to derive temperatures in the mesosphere and lower thermosphere is presented. The instrument consists of a monolithic spatial heterodyne spectrometer (SHS), which is able to resolve the rotational structure of the R-branch of that band. The relative intensities of the emission lines follow a Boltzmann distribution and the ratio of the lines can be used to derive the kinetic temperature. The SHS operates at a Littrow wavelength of 761.8nm and heterodynes a wavelength regime between 761.9 and 765.3nm with a resolving power of about 8000 considering apodization effects. The size of the SHS is 38 × 38 × 27mm3 and its acceptance angle is ±5°. It has an etendue of 0.01cm2sr. Complemented by front optics with an acceptance angle of ±0.65° and detector optics, the entire optical system fits into a volume of about 1.5L. This allows us to fly this instrument on a 3- or 6-unit CubeSat. The vertical field of view of the instrument is about 60km at the Earth's limb when operated in a typical low Earth orbit. Integration times to obtain an entire altitude profile of nighttime temperatures are on the order of 1min for a vertical resolution of 1.5km and a random noise level of about 1.5K. Daytime integration times are 1 order of magnitude shorter. This work presents the design parameters of the optics and a radiometric assessment of the instrument. Furthermore, it gives an overview of the required characterization and calibration steps. This includes the characterization of image distortions in the different parts of the optics, visibility, and phase determination as well as flat fielding. |