Atmospheric correction of SeaWiFS imagery for turbid coastal and inland waters: comment
- 海洋环境－已发表论文 
Ruddick et al. [Appl. Opt. 39, 897 (2000)] extended the standard SeaWiFS atmospheric-correction algorithm for use over turbid coastal and inland waters. However, Ruddick's method is based on the assumption of a spatially homogeneous constant ratio for the water-leaving reflectances normalized by the sun-sea atmospheric transmittance at 765 and 865 nm. Such first-order b(b)/a model-based assumption can result in an inaccuracy for highly turbid water. Using the first- and second-order b(b)/(a + b(b)) models as well as the second-order b(b)/a model (which, more realistically, do not assume spatial homogeneity ratio), we suggest using the modified assumption, R(8)-1 = alpha(o) R(7)-1 + (l(1)Q)(-1) (1 - alpha(o)), instead of Ruddick's assumption, in SeaWiFS atmospheric-correction algorithms for highly turbid waters. (C) 2003 Optical Society of America.