Zhang Min-wei, Dong Qing, Tang Jun-wu, Song Qing-jun
Key Laboratory of Digital Earth, Center for Earth Observation and Digital Earth, Chinese Academy of Sciences, Beijing 100101, China.
Guang Pu Xue Yu Guang Pu Fen Xi. 2011 May;31(5):1403-8.
The inherent optical properties are needed when establishing the semi-analytic model in the ocean color retrieval algorithm. Using the in-situ measurements, a retrieval model for inherent optical properties from remote sensing reflectance was established. The in-situ data measured in the 2003 spring cruise over the Yellow and East China Seas is introduced. The measurement method for remote sensing reflectance, particle backscattering and absorption coefficients are detailed. Based on the bio-optical model, the inherent optical properties were retrieved by optimization of Nelder-Mead simplex. The retrieval results of the absorption and backscattering coefficients for the material other than pure water were compared with the counterpart of the in-situ measurements. The comparison shows that the root-mean-square relative error for the absorption coefficient of materials other than water is less than 33%. The value is 30% for the particle backscattering coefficient. The analysis of the error shows that the retrieval model established in this paper can provide an efficient approach to retrieving the absorption and backscattering coefficients. The retrieval model can provide a reference for the application of remotely sensed data to the research on the bio-optical properties of Yellow and East China Seas.
在海洋颜色反演算法中建立半分析模型时需要用到固有光学特性。利用现场测量数据，建立了一种从遥感反射率反演固有光学特性的模型。介绍了2003年春季在黄海和东海进行的航次现场测量数据。详细说明了遥感反射率、粒子后向散射和吸收系数的测量方法。基于生物光学模型，通过Nelder-Mead单纯形法优化反演固有光学特性。将纯水以外物质的吸收和后向散射系数反演结果与现场测量结果进行了比较。结果表明，水以外物质吸收系数的均方根相对误差小于33%。粒子后向散射系数的值为30%。误差分析表明，本文建立的反演模型能够为吸收和后向散射系数的反演提供一种有效的方法。该反演模型可为遥感数据在黄海和东海生物光学特性研究中的应用提供参考。
