【摘要】 研究了地表温度卫星遥感测量中的两个关键因子——大气修正和发射率效应.正确选择了经仿真计算分析求得的地面温度的反演算法,对我国戈壁地区地表温度进行了卫星资料的反演.通过与地面测量的比较证实了反演算法的可靠性.为了提高卫星反演地表温度的精度,本研究提出了自然地物发射率方向特性的重要性,对特定地物作了发射率角度变化的测量,在实际地表温度反演中作出了恰当的修正,改善了反演精度.更多还原

【Abstract】 The present paper investigates the two crucial factors——atmosphericcorrection and effect of emissivity on land surface temperature retrieval from satellite remote sensing data. The retrieval algorithm which developed by using simulation method is selected to retrieve land surface temperature in Gobi area in China. To verify the results retrieved from satellite data, in-situ radiative measurement data are compared. It is emphasized that the directional properties of emissivity need to be taken into account for accurate retrieval of land surface temperature. The angular variation of emissivity for several natural surfaces have been measured and applied to correcting land surface temperature derived from both satellite data retrieval and in-situ measurements.更多还原