对界面反射超声散斑场的一阶统计特性进行了理论和实验分析。
The first order statistical properties of the ultrasonic speckles reflected from an interface is analyzed theoretically and experimentally.
第二、穿过随机电离层卫星信号二阶统计特性和电离层信道统计特性研究。
Second, the second-order statistical characteristics of satellite signals propagating through the turbulent ionosphere and properties of the ionospheric channel are also studied.
提出了一种基于图像一阶、二阶统计特性的自适应可见光图像对比度增强方法。
Based on the first and the second order of image statistics characteristics, the adaptive visible image contrast enhancement method is presented.
分析此散斑图像的二阶统计特性，导出了强度变化的相关函数和表面粗糙度参数之间的关系。
The relation between the correlation function of intensity variation and surface roughness parameter is derived through analyzing the second-order statistical properties of the speckle image.
人脸识别中，人脸图像的信息不仅存在于像素间的二阶统计特性中，更存在于像素间的高阶统计特性中。
In the face recognition, important information not only exists in the picture element in two-order statistical property but also contains in the high-order statistical property.
在研究接收信号(含直射和方向性散射)复包络二阶统计特性的基础上，采用AR模型对信道进行仿真。
It explores the second order statistics of fading envelopes influenced by nonisotropic scattering environments with light-of-sight (LOS), and USES an AR model for channel simulation.
利用相关系数在真实匹配点附近的统计特性，通过对相关系数进行曲线拟合，根据其一阶导数确定最大相关系数所在的位置，快速得到亚像素匹配点。
By using the statistic properties of the correlation coefficient, a curve correlation coefficient is calculated, and then the matching point is obtained through evaluating it's derivative function.
相位统计矩方法利用MPSK信号符号初相位偶阶统计矩为M的单调递增函数的特性，并进行M进制识别复合假设检验。
In the SPM method the composite hypothesis test is performed by means of the monotonic characteristic of the even order statistical phase moments of MPSK signals.
利用琼斯传输矩阵法研究了二阶偏振模色散的统计特性。
Statistical characteristics of second order polarization mode dispersion (2 nd PMD) are investigated by Jones Transfer Matrix method.
采用统计分析方法，通过平面气孔分布的二阶特性、气孔最邻近距离分布等分析了藕状多孔镁横截面上气孔的分布，结果表明气孔呈近程有序排列。
The spatial distribution of pores on cross section of lotus-type porous magnesium has been studied with second-order characteristics, nearest-neighbour distribution, etc.
采用统计分析方法，通过平面气孔分布的二阶特性、气孔最邻近距离分布等分析了藕状多孔镁横截面上气孔的分布，结果表明气孔呈近程有序排列。
The spatial distribution of pores on cross section of lotus-type porous magnesium has been studied with second-order characteristics, nearest-neighbour distribution, etc.
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