基于粗糙集的杭州湾含沙量遥感模型

Remote sensing model for sediment information of Hangzhou Bay based on rough sets

最佳波段的选择是含沙量卫星遥感监测精度提高的主要途径,是决定含沙量遥感模型建立的关键环节之一。本文对不同遥感定量模式进行了应用比较,在此基础上重点介绍了粗糙集在遥感波段优选中的应用,并根据杭州湾含沙水体的光谱特征,通过粗糙集分析得到了能有效反映杭州湾含沙量分布的最佳波段TM4、TM2及TM7,从而建立了杭州湾含沙量线性遥感模式。

Based on the comparison of various quantitative modes for remote sensing,the rough sets method is adopted to optimize the wave band of remote sensing.According to the optical spectrum characteristics of sediment attained from Hangzhou Bay,the best wave bands effectively reflecting the sediment distribution namely TM4,TM2 and TM7 are found.On this basis the linear remote sensing mode of sediment concentration for Hangzhou Bay is established.