渤海湾海水光谱特性的数值分析——复相关分析

DATA ANALYSIS OF SPECTRAL SIGNATURE OF SEA WATER IN BOHAI BAY -COMPLEX CORRELATION ANALYSIS

一、序言 从遙感信息中提取海洋信息是海洋遙感应用的核心问题。 从遙感数据提取海洋数据,现在已经有很多方法与模型。各种方法都有它们的长处和短处。从目前发表的遙感文章来看,大多还是使用数理统计模型。它的优点是方法比较简单,且比较精确。缺点是有很大的局限性,它的结果只有在特定的海区。

Spectral reflectance of sea water depends on both ehlorophyll-a concentration and suspended sediment, so the complex correlation analysis approach was adopted in data analysis of spectral reflectance of sea water to select the independent variables (reflectance) which have the highest complex correlation coefficient with the dependent variables (chlorophyll-a concentration and suspended sediment content) and to determine the complex- regression equations for quantitatively relating sea truth measurements to remotely sensed data. The results obtained show that the complex correlation analysis approach is better than the single correlation analysis approach in increasing l) the correlation coefficients of remotely sensed values calculated from regression equations to sea truth measurements and 2) the confidence.