遥感火灾监测光谱数据的分析与应用

Analysis and Application of Fire monitoring Spectral Data Based on Remote Sensing

本研究选取了新疆的EOS卫星遥感10个火灾监测实例,利用MODIS数据处理平台,辅助地理信息系统、ENVI软件,对火场光谱分布、通道性能等进行了深入分析。结果表明:在近红外波段,7通道比6通道,明火区反射率峰值总体高出80%～250%。7通道对地面热源反映非常敏感,明火区光谱数据与周围地物光谱数据有显著差异;在中红外波段,21通道不易饱和,该通道独立性、量化程度都非常突出;在远红外波段,31通道对热源反映不敏感性质尤为突出。

Vsing MODIS data processing system, assistanting with GIS and ENVI software, the spectral detection and the channels capability of ten fire monitoring cases in Xinjiang based on remote sensing from EOS were analyzed. The results showed that the reflectivity of fire area at channel 7 in near-infrared band was 80%-250% higher than that at 6. The reflection of heat source was sensitive at channel 7, and its spectrum data was remarkable difference between fire area and other area. It was difficult to saturate at channel 21 in mid-infrared band, and the independent character and the quantization degree of this channel were very outstanding. The insensitivity of heat source＇s reflection at channel 31 in far-infrared band was outstanding especially.