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| Titel |
The measurement of atmospheric transmittance based on 4.4μm laser heterodyne radiometer |
| VerfasserIn |
Tu Tan, Guishi Wang, Lei Wang, Kun Liu, Weidong Chen, Xiaoming Gao |
| Konferenz |
EGU General Assembly 2015
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| Medientyp |
Artikel
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| Sprache |
Englisch
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| Digitales Dokument |
PDF |
| Erschienen |
In: GRA - Volume 17 (2015) |
| Datensatznummer |
250104175
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| Publikation (Nr.) |
 EGU/EGU2015-3599.pdf |
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| Zusammenfassung |
| A laser heterodyne radiometer which was used for atmospheric transmittance measurement was developed. Laser heterodyne spectroscopy is a high sensitive laser spectroscopy technique which offers the potential to develop a compact ground or satellite based radiometer for Earth observation. A 4.4μm external cavity quantum cascade laser with a wide spectral tuning range (4.38μm to 4.52μm) was used as the local oscillator. The performance of the developed laser heterodyne radiometer was evaluated by measuring of CO2 spectral at different pressures, and the spectral resolution of the developed laser heterodyne spectroscopy is about 0.008cm-1. An inter-comparison measurement of atmospheric transmittance with the developed laser heterodyne radiometer and FTS was carried out. Analyzed result shown that there was a high relevancy (>92%) between two groups of data. |
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