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- Because the backscattering coefficient is constant, Amazon tropic rain forest is the important calibration region. 亚马逊热带雨林的后向散射系数呈现大面积的均匀性和稳定性,故成为分布目标定标最主要的定标场。
- It is useful to use greater value of detection angle for increasing the backscattering coefficient and ameliorating the ratio of signal to noise. 可以利用大的探测角值提高背散射率以改善信噪比。
- By using the Monte Carlo method, we simulate the backscattering coefficient and the thickness contrast of low loss energy and coaxial backscattered electrons in thin film targets. 摘要用蒙特卡罗方法模拟计算了薄样品中的高能同轴背散射电子的背散射率和厚度衬度。
- In general, the backscattering coefficients can be calculated from scatter models. 海面雷达后向散射系数是主动微波遥感定量化研究海洋的基础。
- Results Compared with sound velocity and attenuation, the backscatter coefficient could reflect the structural change of biological tissue.The high frequency ul... 结果高频背向散射系数较声速、声衰减更能反映组织结构的变化,高频超声图像具有高的分辨率。
- the backscattering coefficient 后向散射系数
- GMF modeling using traditional statistical method usually needs a great number of backscattering coefficient measurements under various observing parameter conditions. 采用传统的统计方法建立GMF往往需要大量的、多种参数条件下的雷达后向散射测量数据。
- The results show the backscattering of supercontinuum emission from a filament is enhanced in clear air and dusty air with aerosol. 结果表明,在洁净空气和含气溶胶的空气中,自导光丝的超连续辐射都呈现出明显的后向散射增强特性。
- Compensation of backscattering coefficient 背向散射率补偿
- For conductive cylinder, when the radius-to-wavelength ratio is small, the backscattering width of TE polarization is narrower than that of TM backscattering. 对于高导圆柱体,当半径与波长之比较小时,其散射场TE极化的后向散射宽度要小于TM极化的后向散射宽度。
- The simulation results of the backscattering of multilayered soil, dielectric properties of soil are given and the models are validated by special case of single layered soil. 对裸露土壤深层后向散射、土壤介电特性给出仿真结果。通过已知的单层土壤(双层介质粗糙面模型)的后向散射验证了模型的正确性。
- Based on the characteristics of the bispectra,this paper investigates the backscattering feature of the rough ocean surfaces,and the corresponding simulation is carried out. 基于波面的二阶谱特征,研究了粗糙海面后向散射特性并进行了数值仿真。
- The wind whirled the dead leaves about. 风吹得枯叶在四处回旋。
- The wind was whispering in the trees. 一阵风穿过树林沙沙作响。
- There are 26 letters in the English alphabet. 英语字母表中有26个字母。
- Foreign nationals were asked to leave the country. 外国侨民被要求离开该国。
- A cloud is a mass of vapor in the sky. 云是天空中的水汽团。
- A country must have the will to repel any invader. 一个国家得有决心击退任何入侵者。
- The relationship of ultrasonic backscatter coefficient (BSC) in cancellous bone with frequency is analyzed in theoretical and experimental. 在理论和实验上,分析了松质骨中超声背散射系数与频率的关系。
- The substrate scale is 6x6x4 and 8x8x4 fcc cells for lowerand higher incident energy, respectively. The adatom yields, the sputteringyields, the vacancy yields, and the backscattering yields are calculated. 单胞的体积为6a_0×6a_0×4a_0(a_0=0.;392nm为Pt的晶格常数)或8a_0×8a_0×4a_0。