【摘要】 分析了 MODIS适于火情监测的各通道特性 ,并基于今年的 MODIS资料 ,运用红外通道及三通道合成的方法 ,成功地探测到今年发生在我国大兴安岭及境外的多起火情。结果表明 ,利用红外通道探测法时 ,将 2 1通道作为红外辐射探测火情的通道能够得到较好的效果。利用三通道合成法时 ,火灾区域与周边的地物颜色差异较大 ,可以快速地发现火情 ,并估计火情的发展趋势。更多还原

【Abstract】 Each channel property of the MODIS image was analyzed for fire monitoring in this paper. In this year, the several forest fires occurred in Da Hinggan Ling Mountains and foreign regions were detected successfully by using infrared channel detecting and three channel composite methods based on the MODIS data. The results show that we can get good effects when the 21st channel is used to be the channel for fire monitoring by using infrared channel detecting method. When the three channel composite method is used, there is remarkable color difference between fire area and around area. So the forest fire can be detected fast and the trend of the forest fire can be estimated.更多还原