论文部分内容阅读
K波段微波高光谱辐射计应用于大气探测方向,能够减少地表至对流层内的大气廓线误差和提高廓线的垂直分辨率.针对平均辐射温度在宽大气频谱和不同天空仰角下存在浮动的问题,结合所统计的北京地区往年廓线数据和晴空条件下的Liebe大气吸收模型(1993),提出了一种微波高光谱下改进的晴空定标方法.相比于传统的晴空定标方法,该方法利用先验的气象数据对定标过程进行优化计算,有利于提高平均辐射温度的预测精度.误差分析结果表明当K波段微波高光谱辐射计采用改进的晴空定标方法时,能够有效减少平均辐射温度对其定标误差的影响.
The application of K-band microwave hyperspectral radiometer to the direction of atmospheric exploration can reduce the atmospheric profile error from the surface to the troposphere and increase the vertical resolution of the profile.For the problem that the average radiation temperature fluctuates under a wide atmospheric spectrum and at different sky elevation angles , A new method of clear sky calibration under microwave hyperspectral is proposed based on the statistical data of past years in Beijing and the Liebe model of atmospheric absorption under clear sky condition (1993) .Compared with the traditional method of clear sky calibration The method of a priori meteorological data to optimize the calibration process is conducive to improve the prediction accuracy of the average radiation temperature error analysis results show that when the K-band microwave hyperspectral radiometer calibration method using improved clear sky, can effectively reduce the average Effect of Radiation Temperature on Its Calibration Error.