Acta Optica Sinica, Volume. 30, Issue 5, 1304(2010)
Scenery Radiation Acquisition Features of Short-Wave Infrared Imaging Spectrometer
In order to study the effect on scenery radiation energy acquisition and signal-to-noise ratio of short-wave infrared (1.0-2.5 μm) imaging spectrometer caused by prism nonlinear dispersion,the expressions of radiation energy collection and spectrum sampling calculation are deduced,which are calculated and analyzed in the range of short-wave infrared spectrum. It is indicated that when the number of spectral channels is same,compared to equal interval spectral sampling method,the scenery radiation energy collected by a single prism dispersive imaging spectrometer detector is relatively higher in the 1.0-1.85 μm range,but it is relatively lower in the 1.85-2.5 μm range,and the signal-to-noise ratio has similar characteristics. The weak absorption feature of atmosphere is more and more clearly apparent,when the number of spectral sampling channels increases.
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Liang Shuang, An Zhiyong, Feng Yutao, Yu Qiushui. Scenery Radiation Acquisition Features of Short-Wave Infrared Imaging Spectrometer[J]. Acta Optica Sinica, 2010, 30(5): 1304
Category: Imaging Systems
Received: May. 20, 2009
Accepted: --
Published Online: May. 11, 2010
The Author Email: Shuang Liang (liangsh-ciomp@hotmail.com)