基于遥感图像的林火蔓延模型的研建

Establishment of forest fire spreading model based on the remote sensing image.

为了更好地研究林火的发生、发展规律,人们通过实验、观测等手段获取数据建立林火蔓延和预测模型.该文基于对林火的研究,从MODIS数据出发,利用遥感图像的数据融合技术进行图像的增强,从融合后的图像获取建模数据序列,采用灰色理论来建立林火蔓延和预测模型.该模型具有建模简单,模型的通用性强,建模数据获取容易并有利于推广.从建立的灰色模型看,预测相对误差小于1%的占50%,预测相对误差小于5%的占25%,预测相对误差在5%~10%的占25%.

To improve the study on the development of forest fires,the forest fire spreading model was established through the experiments and observation data.Based on the MODIS data,this study obtained data sequence from the enhanced image with fusion technology,then established the spreading and predicting model of forest fires through the integration of Grey Theory.The model has many characters: the process of modeling is simple,data are easy to get,the strong applicability makes it can be used in more fields.By the analysis,half of the predicted relative error was less than 1%,25% was less than 5%,and 25% was 5%-10%.