基于GF-1与实测光谱数据鄱阳湖丰水期总悬浮物浓度反演

高晨, 徐健, 高丹, 王莉莉, 王野乔

Retrieval of concentration of total suspended matter from GF-1 satellite and field measured spectral data during flood period in Poyang Lake

Chen GAO, Jian XU, Dan GAO, Lili WANG, Yeqiao WANG

表2 3种方法的TSM浓度反演模型

Tab.2 Total suspended matter concentration retrieval models in three methods

反演方法	自变量	模型表达式	R²
单波段	$R (707)$	y = 234 016x³-1 587.9x²+772.22x+2.520 5	0.980 5
一阶微分	$\frac{R (777) - R (775)}{777 - 775}$	y = 2×10¹³x³-2×10⁹x²+565 942x+4.188	0.968 1
波段比值	$\frac{R (717)}{R (401)}$	y = 8.616 6x³-47.114x²+127.39x-88.009	0.959 3