遥感可见光波段的水体透视深度研究

可见光对水体具有一定的穿透能力,有必要对其穿透深度作定量的分析评价。本文在分析前人提出的阳光穿透深度Z_(90)的基础上,综合考虑水体组成状况、大气条件和传感器接收特性等因素,提出了遥感透视深度Z_R的概念,并推导出Z_R与Z_(90)的关系式。用Landsat MSS磁带数码计算以及用Monte-Carlo法模拟低增益Landsat 3号MSS4、MSS5波段在水体含有不同悬浮泥沙和叶绿素浓度下Z_R的数值大小。结果表明,在许多情况下Z_R与Z_(90)有较大差异、

A STUDY ON REMOTE SENSING PERSPECTIVE DEOTH INTO WATER IN VISIBLE BAND

It is highly necessary to estimate correctly the remote sensing perspective depth in visible regions as sunlight is capable of penetrating water to some extent. The sunlight penetration depth put forward by Gordon et al only considers the optical characteristic of water body. The now concept of remote sensing perspective depth, is defined, and an effort is made to deduce the relationship between both depths considering water optical property, atmospheric condition, receiving and recording characteristic of sensor and human interpretation level in an all-round way. The computation using magnetic tape code of low gain Landsat MSS4, MSS5 and the computation using Monte-Carlo algorithm of remote sensing perspective depth are made with different suspended matter and chlorophvll concentrations