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基于在太湖、天目湖观测的水下光场资料,假定在水体中无内光源及无非弹性散射的情况下,通过水体中向上、向下的辐照度廓线分布,及由此确定的漫射反射率、漫射衰减系数,较为成功地反演了水体中介质的固有光学参数——吸收系数,且在较大程度上降低了由波浪及船舶阴影所带来的误差。同时将该反演结果与通过定量滤膜技术测定的结果进行了比较,二者吻合得较好。该方法有利于研究进入水体的太阳辐射能在各介质之间的分配及水生生态系统对水下光场的响应、大型浅水湖泊中蓝藻水华的暴发机理、提高二类水体水质定量遥感精度。
Based on the data of the underwater light field observed in Taihu Lake and Tianmu Lake, assuming that there is no internal light source and no non-elastic scattering in the water body, the profile of upward and downward irradiance profile through the water body, Ray reflectivity and diffusion attenuation coefficient. The intrinsic optical parameters of media in water, such as the absorption coefficient, have been successfully inverted and the errors caused by the waves and the shadow of ships have been reduced to a great extent. At the same time, the result of inversion was compared with the result of quantitative filter technique, and the two agree well with each other. The method is conducive to studying the distribution of solar radiation entering the water body and the response of aquatic ecosystems to underwater light field, the outbreak mechanism of cyanobacterial bloom in large shallow lakes, and improving the accuracy of quantitative remote sensing of water quality in the second type of water bodies.