Numerical Simulation of DoubleBand Cloud Remote Sensing Based on Atmospheric Downward Infrared Radiation
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Abstract:
To apply multichannel remote sensing technology to cloud remote sensing based on groundbased infrared sensors，the SBDART model is used to calculate the atmospheric downward infrared radiation of double bands（103 to 113 μm，115 to 125 μm），from which the characteristics of the brightness temperature difference are analyzed and the influences of the different visibilities and sky statuses on brightness temperature difference are discussed.The simulation results are compared with that in the real sky status. It is shown that in the perfect visibility situation，the change of the radiance at the zenith is more evident than that at the horizon，and the different characteristics of the brightness temperature difference in the different sky statuses can be adopted to identify clouds under higher visibility within a certain range of zenith angle.
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Supported by:Beijing E-Tiller Technology Development Co., Ltd.
Supported by:Beijing E-Tiller Technology Development Co., Ltd.