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- nanophase scattering center 纳米相散射中心
- Scattering center model describes the scattering characteristic of radar targets in optical region. 散射中心模型是描述光学区雷达目标电磁散射特性的重要工具。
- T hen we analyze the target scattering center model, angle movement model and the simulation of radar target range profile based on these models. 并具体分析了目标的散射中心模型、角运动模型及根据这些模型进行目标一维距离像仿真的方法。
- This method takes full advantage of GA's inherent parallelism and solves the estimation problem of the equivalent scattering center. 该方法充分利用遗传算法的内在并行性，解决了二维等效散射中心的估计问题。
- This work is done by using a set of parameters about radar scattering center as target features and by using HMMs as classifiers. 主要研究内容包括两个方面：（1）基于散射中心位置参数特征和连续HMM分类器的识别方法及其仿真实验；
- I n the light of the high-resolution frequency-stepped millimeter wave (MMW) radar , we consider that a radar target is made up of some strong scattering center. 针对高分辨阶梯变频毫米波雷达，将目标看成是由若干个可以单独分辨开的强散射中心组成。
- Based on attributed scattering center model, on the basis of reference [6], a modified method of extracting SAR target scattering center features from imagery domain is presented. 本文基于属性散射中心模型，在文献[6]的基础上，提出了一种改进的图像域SAR目标散射中心特征提取方法。
- The undamped exponential model and CLEAN method are used in the extraction algorithm to transform 1-D scattering center extraction into non-linear optimization problem with genetic algorithm. 它采用非衰减指数和模型与CLEAN方法，将每个散射中心的提取转化为一个非线性优化问题，并利用遗传算法进行优化求解。
- When the parameter estimation of Damped Exponentials (DE) based scattering center model is considered in real life situation, the noise is always non-Gaussian and has long-tailed distribution. 实际条件下，在对基于衰减指数(DE)和模型的雷达目标散射中心参数估计和特征提取时，其噪声背景往往是非高斯的，分布密度函数表现出长拖尾性质。
- Extracting main scatter center of the target correctly and accumulating the energy of the main scatter center are the key to the high resolution radar range extension target detection. 正确提取目标强散射中心,并对强散射中心的能量进行有效的积累,是高分辨率雷达距离扩展目标检测的关键。
- The relation between HRRP in bistatic radar and HRRP in static radar of the target with multiple scattering centers is investigated.The... 所提出的结论为多基地雷达系统利用多站同时获取的双基地距离像构造目标散射点三维结构图奠定了基础。
- At last, the orthogonal property of signal with noise subspaces and the approximating of the binomial are utilized to estimate the types of the scattering centers. 同时，利用特征分析法的信号与噪声子空间正交特性、二项式近似两种方法来提取散射中心的类型参数。
- Fully polarized scattering center 全极化散射中心
- Small villages scatter at the foot of the mountain. 村庄零零落落地散布在山脚下。
- KRS-5 single crystals have been grown in three kinds of atmospherest air, Ar and Ar+I_2. The scattering centers in crystals were examined and the metal impurities and oxygen content of the crystals were analysed. 在空气、流通氩气和Ar+I_2混合气体等气氛条件下生长出KRS-5单晶,检查了晶体中的散射,分析了晶体中金属杂质和氧含量。
- In this paper, we first classify the nonideal scattering centers to three kinds through analysis the assumption of ideal scattering centers model. They are dispersive scattering centers, glide scattering centers and anisotropic scattering centers. 通过概括理想点散射模型所包含的假设前提条件,限定出了模型失配的原因,提出了非理想散射中心的分类方法:把它们分为色散型散射中心、滑动型散射中心和各向异性散射中心,并分析了各种类型非理想散射中心在图像域的表征。
- He moved the table over to the center of the room. 他把桌子移到房间中心。
- The land is destined for a new shopping center. 这块地已被划作为营建一个新购物中心之用。
- The farmers were scattering seed on the fields. 农夫把种子撒在田里。
- His activities in London center around this spot. 他在伦敦的活动以这个地点为中心。
