散射角

Models for the electromagnetic interaction between the target and trunks or between the trunks and trunks are developed, and these models are used to derive the coherent fields scattered by the target and fractal forest. Then, the polarization angular correlation function is calculated by using azimuthal angular averaging, and used to detection target buried in forest.

本文用L系统对森林环境进行了理论建模；研究了有限长分层介质圆柱的树干散射模型；分析了倾斜粗糙地面上树干及分形树的电磁散射特性；讨论了环境对确定目标电磁散射特性的影响；研究了环境与隐蔽目标复合电磁散射，用角相关函数、极化角相关函数对隐蔽目标进行了检测。

The experimental differential cross section data analysis with thetheory calculation code DWUCK4 using the distorted-wave Bornapproximation and zero-range interaction.

采用逐个事件的方法，用一事先产生的一系列点组成的数据库模拟探测器边界，事件的几何探测效率进行归一化，得到实际的实验室系散射角分布。

The calculated double differential cross section of the new model is compared with experimental data and previous SCDW calculations with single particle model. The calculated cross sections are larger than those given by previous calculations at backword and forward angles and smaller than those given by previous calculations near the quasi-elastic scattering angle. The agreement with experimental data is much improved.

新模型的双微分截面计算结果与实验值以及以前采用单粒子壳层模型时的计算结果进行了比较，表明CDFM模型的引入对SCDW模型的计算结果有较大的改进，使其在大角度和极小角度区域有所增大，在准弹性散射角附近有所减小，从而能更好地与实验值相符合。

In addition, the impacts of delay spread, scattering angle and antenna spacing on ergodic capacity are explored.

同时，还考察了多径数、散射角和天线间距等参数对信道容量的影响。

The results show that the SAXS intensity measured for hydride of 5at％ Mo alloy was lower than that of other hydrides in the high scattering angle range.

结果表明，氢化物样品中Mo含量为5at％时，所测定的SAXS强度在高散射角区明显低于其它样品的SAXS强度。

The integral with respect to scattering angle is separated andcan be carried out exactly without meeting the usual divergent difficulty. The five-foldBoltzmann integral is reduced to a simple three-fold integral.

通过一种变量变换的方法，成功地将玻耳兹曼碰撞项中的有关散射角积分，分离并解析地积出，将五重积分形式的玻耳兹曼碰撞项化为较简单的三重积分。

A single dynamic temperature ramp test is adequate in determining both the binodal and spinodal phase separation temperatures.(3) The critical composition and temperature of PMMA/SAN is 56/44 and 184℃, respectively.

常规的研究方法，如差示扫描量热法、动态力学分析法、荧光光谱法、傅立叶转换红外光谱法、小角X射线散射、小角中子散射和小角激光散射等，都存在不可避免的缺陷。

At the same time, the calculated four renormalized PDDCSs indicate that products are strongly polarized at three scattering angles, which can ascribe to three transition states on both PESs.

同时，计算的四个重整化极化依赖微分截面显示产物在三个散射角被强烈极化，这与在两个势能面上的三个过渡态有关。

The receiver clock error models and satellite clock error models are induced from the real data analysis.

此外，还讨论了由于GPS信号散射角、地球遮挡等产生的几何可见性问题。

When the receiving aperture is much larger than the scattering disk scale, the aperture-smooth effect is remarkable and the derived variance approximates the result given by weak-fluctuation theory for any zenith; when the receiving aperture is much smaller than the scattering disk scale, the low-pass filter effect of the scattering disk scale is dominating and weak-fluctuation theory is valid only for small zeniths.

散射盘尺度和接收孔径对到达角起伏起平滑作用，当接收孔径远大于散射盘尺度时，由于孔径平滑作用，导出的表达式在任意天顶角都可以近似为弱起伏理论给出的结果；当接收孔径小于散射盘尺度时，散射盘尺度的平滑作用明显，接收孔径的平滑作用相对较小，传统的到达角起伏理论仅在小天顶角是适用的，在大天顶角必须用新导出的方差表达式。

With Death guitarist Schuldiner adopting vocal duties, the band made a major impact on the scene.

随着死亡的吉他手Schuldiner接受主唱的职务，乐队在现实中树立了重要的影响。

But he could still end up breakfasting on Swiss-government issue muesli because all six are accused of nicking around 45 million pounds they should have paid to FIFA.

不过他最后仍有可能沦为瑞士政府&议事餐桌&上的一道早餐，因为这所有六个人都被指控把本应支付给国际足联的大约4500万英镑骗了个精光。