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通过现场实测厦门海域水体遥感反射率及水体悬浮物浓度,分析了该海域水体的遥感反射光谱特征,选取了特征波段及组合建立了该海域水体悬浮物浓度反演模型。本文经过对比分析水体中呈悬浮态的总颗粒物质量浓度的不同反演方法,最后得出悬浮颗粒物在近红外波段的反射曲线的反射率高值和低值围成的区域面积可较好的反演研究区域的悬浮颗粒物浓度,其统计回归模型的决定系数是0.66,该反演算法的RMSE是10.25 mg/L,相对误差是7.79 mg/L。
The remote sensing reflectance of water bodies and the concentration of suspended solids in the sea of Xiamen were analyzed. The characteristics of remote sensing reflectance spectra were analyzed. The characteristic wave bands and their combinations were selected to establish the inversion model of suspended matter concentration in the sea. In this paper, the different inversion methods of mass concentration of suspended particulate matter in water are comparatively analyzed. Finally, it is concluded that the reflectance of the suspended particles in the near-infrared band reflect the high and low reflectivity of the region. The determination coefficient of suspended particulate concentration in the study area was 0.66. The RMSE of the inversion algorithm was 10.25 mg / L and the relative error was 7.79 mg / L.