Acta Optica Sinica, Volume. 31, Issue 1, 101001(2011)
Abilitiy Analysis of Spatial Heterodyne Spectrometer in Atmospheric CO2 Detection
The necessity of using high-resolution near infrared spectra in space-based atmospheric CO2 detection is discussed. According to simulation results, some key parameters such as detection band, spectral resolution and singnal to noise ratio (SNR) for space-based CO2 detection are analysed. Based on these simulated parameters, a spatial heterodyne spectroscopy (SHS) prototype instrument is introduced. Then this prototype instrument′s spectral resolution and abilities in CO2 detection are verified by laboratory and out-door experiments. Using LBLRTM software and near-real-time atmospheric parameters acquired from National Centers for Environmental Prediction (NCEP), the ground-based observation data of the instrument is simulated. The comparison between simulation results and SHS prototype instrument′s measurements shows a good fit. It is proved that the SHS prototype instrument is very sensitive to atmospheric CO2 absorption, and the instrument′s measurements could be used for space-based atmospheric CO2 detection.
Get Citation
Copy Citation Text
Wu Jun, Wang Xianhua, Fang Yonghua, Xiong Wei, Shi Hailiang, Qiao Yanli. Abilitiy Analysis of Spatial Heterodyne Spectrometer in Atmospheric CO2 Detection[J]. Acta Optica Sinica, 2011, 31(1): 101001
Category: Atmospheric Optics and Oceanic Optics
Received: Apr. 4, 2010
Accepted: --
Published Online: Dec. 24, 2010
The Author Email: Jun Wu (junewu@163.com)