Correction of thermal imagery for atmospheric effects using aircraft measurement and atmospheric modeling techniques.
Correction of thermal imagery for atmospheric effects using aircraft measurement and atmospheric modeling techniques.
复制标题
使用飞机测量和大气建模技术校正大气影响的热图像。
DOI：
10.1364/ao.25.002563
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发表时间：
1986
期刊：
影响因子：
1.9
通讯作者：
J. Schott
中科院分区：
文献类型：
--
作者：
A. E. Byrnes;J. Schott
通过对热红外线扫描仪数据应用多高度和双视角校准技术，获得了8-14 μm波段大气路径透射率和大气路径（上涌）辐射率的机载测量。一个光谱校正的lowtran代码被用来生成路径传输和上涌辐射值对应的经验测量。使用lowtran和多高度方法，校正温谱图以考虑大气影响，计算出的表面温度与同期动力学温度读数相差0.7°C。角度校准方法导致304.8米（1000英尺）高度数据的计算表面温度误差相似，并且在1828.8米（6000英尺）高度上增加1.2°C/304.8米。本文对这些大气校准方法进行了比较分析。
Airborne measurements of atmospheric-path transmission and atmospheric-path (upwelled) radiance in the 8–14-μm band were obtained by applying a multiple altitude and a dual-view angle calibration technique to thermal IR line scanner data. A spectrally corrected lowtran code was used to generate path transmission and upwelled radiance values corresponding to the empirical measurements. Using lowtran and the multiple-altitude method, calibration of thermograms to account for atmospheric effects yields computed surface temperatures within 0.7°C of concurrent kinetic temperature readings. The angular calibration method results in similar computed surface temperature errors for 304.8-m (1000-ft) altitude data and increasing by 1.2°C/304.8-m up to a 1828.8-m (6000-ft) altitude. This paper contains results of a comparative analysis of these approaches for atmospheric calibration.