| 1. | Once multiple scattering becomes involved simple formulae such as those just given are inapplicable .
一旦涉及到多次散射，刚刚给出的那些简单公式便不再适用了。 |
| 2. | Furthermore , the scattering is negligible with respect to absorption , eliminating ‘ multiple - scattering ’ problem
此外，散射同吸收相比微不足道，从而消除了“多次散射”问题。 |
| 3. | The application of monte carlo method in simulation the transport of photons in multiple scatter media is discussed in detail
详细地阐述了模拟光子在多次散射介质中传榆的蒙特卡罗方法。 |
| 4. | Multiple scattering from two - dimensional rough surface with large surface root mean square ( rms ) slope is studied with kirchhoff approximation
摘要利用基尔霍夫近似研究了表面均方根料率较大的二维粗糙面的多次散射问题。 |
| 5. | In comparison of the numerical results of total multiple scattering with the forward - backward method , excellent agreement is obtained
将考虑多次散射的数值计算结果与前后向迭代方法的数值结果做了比较，两种方法的计算结果基本一致。 |
| 6. | For the multiple scattering theory , the total scattered power from a random rough surface is contributed to , not only by single scattered waves , but also by those multiple scattered waves
在多次散射理论中，随机粗糙面的总散射功率不仅与单次散射波有关，而且还取决于多次散射波。 |
| 7. | In addition , a shadowing function applicable to multiple scattering is taken into account , which extends the calculation to the surface with anisotropic slope distribution
引入考虑多次散射的遮蔽函数来修正掠入射情况下的散射系数，并将计算范围扩展到均方根料率各向异性的二维粗糙面。 |
| 8. | In our algorithm , we separate out the singly scattered radiation and apply the normal four - stream approximation of stamnes " s discrete - ordinate - method to the multiply scattered radiation alone
我们将单次散射辐射分离出来单独求解，对于多次散射，单次散射作为其辐射源，用kuntstamnes的离散纵标法作四流近似计算。 |
| 9. | Traditional method can be classified two class : linear optimization technique and nonlinear optimization technique , linear optimization technique base on born approximation or rytov approximation is usually used to solve weak scattering problem
线性优化方法采用线性近似忽略了散射体内部的多次散射，可以有效的反演低对比度的问题，但对于高对比度问题的求解则有可能不收敛。 |
| 10. | The results show that : 1 ) the effects of interface on waves scattering are stronger in the structure with the interface perpendicular to the direction of fracture normal than that in the structure with the interface parallel to the direction of fracture normal . 2 ) when the interface is perpendicular to the direction of fracture normal , the amplitude of reflected waves and converted s - waves are higher and there are the sub - p - and sub - s - wave . 3 ) when the elastic waves propagating in the multi - stripe model , wavesforms become complex due to multiple scattering on interfaces
研究结果表明： 1 )界面与裂缝排列方向平行时，界面对波的散射作用大于界面与裂缝排列方向垂直时的情况； 2 )当界面与裂缝排列方向平行时，在界面上产生的反射波及转换的横波幅度较大，并且有次级纵波和横波产生； 3 )弹性波在多条纹结构中传播时，在界面上产生多次散射使得波形十分复杂。 |
