1) high-order fractal feature
高阶分形特征
1.
This paper extracted the box dimension,information dimension and the high-order fractal feature-aperture resolution slope as the feature vector, which contain the change law of amplitude,frequency and phase and diversity between different modulation classes.
提取了盒维数、信息维数和高阶分形特征-缝隙尺度变化率构成分类特征向量空间,这些特征包含了信号幅度、频率和相位的变化规律,集中了各种调制方式之间的差异信息,通过理论分析和仿真表明,当 SNR>5dB 时,(1)分形特征对分形随机噪声不敏感,能充分保证分类特征在决策空间存在一个较清晰的边界;(2)在相同的 SNR 环境下,分形特征在分形噪声环境下比在高斯白噪声环境下有更好的稳定性,对5种调制样式的识别率均大于92。
2.
In order to detect ship targets under complex sea background,the high-order fractal feature and its application to texture classification are analyzed.
针对复杂海面环境下的舰船目标检测,分析了高阶分形特征缝隙在纹理分类中的应用,提出了一种基于分形维与缝隙的目标检测新方法,并利用该方法对海面舰船目标进行了检测。
3.
The high-order fractal feature is employed to detection of moving target under sea background.
将高阶分形特征用于海面运动目标检测,提取出用于区分运动目标和海杂波的新的分形特征——缝隙特征。
2) high order fractal feature
高阶分形特征
1.
In this paper,the high order fractal feature is employed to analyze radar signal.
本文将高阶分形特征用于雷达信号的分析 ,提取出用于区分目标和杂波的新的分形特征———缝隙尺度变化率 。
3) high-order distribution statisti
高阶分布特征统计量
4) Fractal characteristics
分形特征
1.
Scale effection and its fractal characteristics about a-diversity in Picea-Abies forests and coniferous broad-leaved mixed forests;
云冷杉林和针阔叶混交林a-多样性的尺度效应与分形特征
2.
Based on the SEM-images of mature granular sludge in ABR, the research process on fractal characteristics of these granules was built.
建立了基于SEM照片研究ABR成熟颗粒污泥分形特征的操作程序,采用Photoshop、Newscan和Fips程序对该图形进行处理和分形维数计算。
3.
In order to describe quantitatively the characteristics of wastewater flow variation,and acquire the node flow hydrographic as required for the analog precision of variable flow in sewer network,study was made on the fractal characteristics of wastewater flow sequence by using fractal theory according to daily influent flow record in a wastewater treatment plant.
为定量描述污水流量的变化特性,并获得污水管网非恒定流模拟精度要求的节点流量过程线,结合某污水处理厂的日进水流量记录应用分形理论对污水流量序列的分形特征进行了研究。
5) fractal character
分形特征
1.
The Research for the Fractal Character of Hong Kong Stock Market;
香港股票市场分形特征研究
2.
The results show that under different impacting frequencies, there are clear fractal characteristics .
选取TP140套管在自行研制的套管磨损试验机上进行磨损试验,利用表面形貌仪测量在不同冲击频率条件下的套管表面磨损形貌,选用结构函数法考察磨损形貌的分形特征,使用拟合误差法确定分形曲线的无标度区间并计算分形维数,利用扫描电子显微镜分析其磨损机制。
3.
Based on the basic fractal theory and GIS technique, the topographical fractal character of Chabagou watershed, which lies on loess plateau, is studied, the model and method that are used to calculate the fractal information dimension of the topographical fractal character of the watershed is put forward, and the fractal information dimension of the topography of Chabagou watershed is worked out.
本文基于分形基本理论和GIS技术,对地处黄土高原丘陵沟壑区第一副区的岔巴沟流域地貌形态分形特征进行了量化研究,提出了流域地貌形态特征分形信息维数的计算模型和方法,并依此获得了岔巴沟流域及各支流域的地貌形态特征分形信息维数。
6) fractal features
分形特征
1.
Physical simulation experiment of water driving by micro-model and fractal features of residual oil distribution;
微观物理模拟水驱油实验及残余油分布分形特征研究
2.
The fractal features of soil granule structure before and after vegetation destruction on Loess Plateau;
黄土高原植被破坏前后土壤团粒结构分形特征
3.
The fractal features of accident time series were studied by using G-P(Grassberger-Procaccia)arithmetic and correlation dimension of accident time series was calculated out.
根据我国"十五"期间事故统计数据,构造了一个事故时间序列;基于相空间重构理论,对事故序列进行了相空间重构,应用G-P算法,对事故时间序列的分形特征进行了研究,计算得出事故时间序列的关联维数。
补充资料：特征流形
特征流形
characteristic manifold
特征流形【eh.ra日比ristiem耐创d;xapaKTep“cT.，ec姗eMl.oro06pa3.]，偏微分方程论中的 见特征(characteristie).
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条