地温敏感波段的遥感图像反演算法研究

Research on retrieval of remote sensing images on surface temperature-sensitive band

针对应用于地表温度反演的航天遥感数据波段选择问题,文章提出了利用波长范围为8～10.5μm的热红外遥感数据反演地表温度的单通道反演算法：从温度敏感性的角度证明了利用波长范围为8～10.5μm的遥感数据反演地表温度的合理性;在此基础上,将仪器光谱响应率引入到基于大气校正原理的单通道反演算法中,提高了地表温度的反演精度.最后通过实验证明了利用此波段的热红外遥感数据反演地表温度的可行性.

Aiming at the selection issue of the waveband of the remote sensing data for land surface temperature retrieval, the paper proposed a single-channel algorithm based on LWIR remote sensing data of 8~10. 5μm. analyzed the rationality of the waveband selection of 8~10.5μm from the perspective of temperature sensibility; and imported a spectral calculation method into the single-channel algorithm based on the atmospheric correction theory in order to improves the retrieval accuracy. Finally, experimen- tal results proved the feasibility of the waveband selection of 8~10.5μm.