DETERMINING THE OPTICAL-PROPERTIES OF TURBID MEDIA BY USING THE ADDING-DOUBLING METHOD
DETERMINING THE OPTICAL-PROPERTIES OF TURBID MEDIA BY USING THE ADDING-DOUBLING METHOD
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DOI：
10.1364/ao.32.000559
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发表时间：
1993-02-01
期刊：
影响因子：
1.9
通讯作者：
WELCH, AJ
中科院分区：
文献类型：
--
作者：
PRAHL, SA;VANGEMERT, MJC;WELCH, AJ
描述了一种通过使用全反射、非散射透射和全透射测量来查找混浊材料板的光学特性（散射、吸收和散射各向异性）的方法。该方法适用于具有任何光学厚度、反照率或相位函数的均匀浑浊板。该平板可能具有与其周围环境不同的折射率，并且可能会或可能不会被玻璃包围。通过迭代辐射传输方程的加倍解直到反射和透射的计算值与测量值匹配来获得光学特性。详尽的数值测试表明，当使用四个正交点时，该方法的固有误差< 3%。
A method is described for finding the optical properties (scattering, absorption, and scattering anisotropy) of a slab of turbid material by using total reflection, unscattered transmission, and total transmission measurements. This method is applicable to homogeneous turbid slabs with any optical thickness, albedo, or phase function. The slab may have a different index of refraction from its surroundings and may or may not be bounded by glass. The optical properties are obtained by iterating an adding-doubling solution of the radiative transport equation until the calculated values of the reflection and transmission match the measured ones. Exhaustive numerical tests show that the intrinsic error in the method is < 3% when four quadrature points are used.