English translation for "backscattering coefficient"
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- 背散射系数
反向散射系数
后向散射系数
Related Translations:
- Example Sentences:
| 1. | Backscattering coefficient b
回散射系数 | | 2. | 4 . based on the theory of kirchhoff approximating and the model of franceschetti facet field simulating , an algorithm for the computing the facet backscatter coefficients is presented
4 .基于kirchhoff近似理论和franceschetti地面场景仿真模型,实现了一种根据小平面单元与sar之间的几何关系计算小平面单元后向散射系数的算法。 | | 3. | Based on the theory of kirchhoff approach and facet , the algorithm of computing the facets " backscatter coefficients is discussed . especially a method of computing part of the backscattered field is advanced
基于kirchhoff近似理论和franceschetti的地面场景仿真模型，本文实现了根据小平面单元与sar之间的几何关系计算小平面单元后向散射系数的算法。 | | 4. | Using a simple radiative transfer model for vegetation volume scattering and the integral equation model ( ibm ) for surface scattering with the field in situ measurements as the input , we compared the simulated and sar measured backscattering coefficients in different agricultural fields
特别是在植被覆盖地表，对其下土壤水分的监测更带有极大的困难性。因此，利用雷达后向散射系数反演土壤水分必须首先充分理解微波与地表的相互作用过程。 | | 5. | According to the principle of a new scanning electron microscope and the mechanism of the interaction between electron beam and solid target , the trajectories of an incident electron in a sample are simulated , a simulation program is compiled using the monte carlo method , and the backscattering coefficients corresponding to different parameters of the sem are obtained
摘要根据新型分析扫描电子显微镜的工作原理及载能电子束和固体相互作用原理，利用蒙特卡罗方法模拟入射电子和靶物质的相互作用过程，编制了蒙特卡罗模拟计算程序，获得了对应不同电镜工作参数的入射电子背散射率。 | | 6. | For parameter a , there is a close relationship exist between a ( 9 , sr ) in two different radar incident angle that can be expressed as : with considering the effects of soil texture , we get the final expression of the inversion model : where mv ( t1 ) , mv ( t2 ) is volumetric soil moisture content in two different temp , c , d is soil type related parameters , and v ( t1 ) , s ( t2 ) is coresponding bare soil radar backscattering coefficients . inversion results show that for the c band hh polarized radarsat scansar data with a range of incidence angle from 20 to 40 , the soil moisture change value can be derived with an acceptable accuracy using the above model . the temporal and spatial soil moisture change patterns are associated with rainfall and vegetation cover , as well as the soil hydraulic characteristics
利用最新发展的电磁波散射模型研究了不同植被覆盖地表雷达波对地表土壤水分的敏感性，建立了半经验植被雷达后向散射模型; 2 ) .研究发现在农作物等矮小植被覆盖地表，植被层直接后向散射与植被类型相关，且在植被生长期，雷达后向散射系数对植被含水量的敏感性要高于对植被高度变化的敏感性; 3 ) .解决了单参数雷达地表土壤水分反演问题中，雷达入射角和地表粗糙度的影响这一难点问题; 4 ) .利用土壤介电模型校正了不同土壤类型对反演地表土壤体积含水量的影响; 5 ) .在以上成果基础上，建立了完整的单参数雷达地表土壤水分变化探测反演算法，经地表验证，模型反演地表土壤水分变化值的精度为rmse = 0 | | 7. | 2 ) radar incidence angle and surface roughness correction : to make radar incidence correction and eliminate the surface roughness effects , a wide range of surface parameters ( soil moisture , surface rms height , correlation length , incidence angle ) was input to the ibm model to simulate the effect of surface roughness and radar incidence angle on the sensitivity of soil moisture to the radar backscattering coefficient . a simple model was established to simulate the effects of incidence angle and surface roughness . 3 ) establishment of soil moisture change inversion model : according to a modified ibm model simulation results , the bare surface backscattering coefficients can be expressed as a funtion of the dielectric component for a given surface roughness when the surface slope greater than 2 . 0 , which is valid for most nature surface : in above equation , r0 is the surface reflectivity at normal incidence
本研究中，首先利用基于微波辐射传输方程的微波植被模型和积分方程( iem )模型模拟了各种地表土壤水分含量情况下，植被覆盖、地表粗糙度(包括地表均方根高度和相关长度) 、雷达入射角对c波段(频率4 . 7ghz )水平极化( hh )雷达后向散射系数的影响，在此基础上，建立模型消除了植被覆盖、地表粗糙度、及雷达入射角对雷达后向散射的影响，利用多时相50m分辨率radarsatscansar雷达后向散射系数图像反演得到了地表土壤水分变化模式信息。 |
- Similar Words：
- "backscattered gamma ray" English translation, "backscattered light" English translation, "backscattered radiation" English translation, "backscatterer" English translation, "backscattering" English translation, "backscattering coefficient b" English translation, "backscattering crosssection" English translation, "backscattering gauge" English translation, "backscattering ratio" English translation, "backscattering spectrometer" English translation
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