Infrared and Laser Engineering, Volume. 47, Issue 12, 1204003(2018)
Infrared radiance characteristic of cirrus atmosphere in the strong absorption bands
Infrared radiance characteristic of cirrus atmosphere is the main clutter sources for advanced space-based electro-optical detecting systems. Based on bulk scattering parameters of cirrus particles in 2.7 μm and 4.3 μm wavebands, cirrus atmosphere radiance transfer model was constructed. With cirrus and atmosphere parameters measured by MODIS, the infrared radiation images of cirrus atmosphere were calculated. The statistical results of all pixels show that, in the 2.7 μm band, the average radiance is 1.832e-2±3.024e-2 W/(m2·sr), and the average radiance of cirrus pixels is 433 times larger than that of the clear-sky pixels; For 4.3 μm in-band radiance of all pixels, the average value is 3.027e-2±2.99e-3 W/(m2·sr), the maximum value is 2.37 times as large as the minimum.
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Dai Congming, Zhao Fengmei, Liu Dong, Tang Chaoli, Wei Heli. Infrared radiance characteristic of cirrus atmosphere in the strong absorption bands[J]. Infrared and Laser Engineering, 2018, 47(12): 1204003
Category: 红外技术及应用
Received: Jul. 5, 2018
Accepted: Aug. 3, 2018
Published Online: Jan. 10, 2019
The Author Email: Congming Dai (cmdai@aiofm.ac.cn)