The reason to choose Harr wavelet is that it has excellent time localization performance, concise analytical expression and lower energy leakage on the window scale. 选择Harr小波进行研究,因为其具有良好的时间局部性和简明的解析表达式,而且在窗宽范围内能量泄露较小。
Electric vehicle ( EV) can realize the localization of energy source and it is the ultimate choice of zero-discharge, energy-saving, and environment-friendly automobile. However, the behavior of the power cell restricts the application and development of electric vehicle. 电动汽车(EV)是实现汽车能源多元化与零排放节能环保汽车的理想选择,但由于车用动力电池性能发展水平的制约,纯电动汽车的发展与应用受到了有识之士的质疑。
It is found that there is strong localization of electronic state in Pr contained system, and there is a good corresponding relationship between the Tc and lattice energy. 发现在这些体系中,Tc与晶格能之间有良好的对应关系,含Pr体系中存在强烈的电子态局域化效应。
A new damage localization method is proposed to locate damage using lamb wave. This method uses HHT algorithm to extracts damage character and identify the location based on energy attenuation of the tested signal. 本文介绍一种用Jamb波对复合材料进行损伤检测的定位方法,该方法用HHT算法提取损伤特征,利用损伤处能量的衰减的特点,确定损伤位置;
A fast and robust approach method for making the detection, localization and tracking of a persona face in image sequences was presented. A new representation of motion energy was defined. 提出了一种快速的、鲁棒的人脸定位及跟踪研究方法,定义了一种新的运动能量表示方法,利用该方法可以很快地检测出图像中的运动区域。
The existing acoustic source localization techniques are typically based on three types of sensor measurement from physical variables: time delay of arrival, direction of arrival and received sensor signal strength or energy. 根据传感器探测物理量的不同,经典声目标定位方法主要分为三类:基于波达方向定位(DOA),基于时延定位(TDOA)和基于信号能量定位(RSSI)。
A Text Localization Algorithm Based on Texture Energy for JPEG Images 一种基于纹理能量的JPEG图像文本定位算法
There is a certainty localization accounting for theorem of energy average. 对多原子分子气体实验值与理论值有一定的偏差,说明能均分定理存在一定的局限性。
At the end of this paper, a property system for sensor nodes localization is realized and the accuracy of position estimation and the cost of energy is given in the way of graph under different circumstance. 在文章最后基于以上两种算法实现了一个传感器节点定位原型系统,给出了在节点布置坏境不同时的定位精度和能量损耗实验结果。
The algorithm of template localization based on point pattern matching and energy minimization 基于点模式匹配和能量最小化的模板定位算法
Study on Damage Localization of Offshore Platform Based on Modal Strain Energy 基于模态应变能的海洋平台损伤定位试验研究
The localization of electronic states and the distribution zone of the system energy are discussed to the parameters of system size and the disordered degree of diagonal and non diagonal elements. 并针对系统大小,对角和非对角无序程度等各种参数,探讨了电子的局域化、系统能量分布范围等问题。
Monitoring observation localization for Geheyan Project in1998 flood season was the deep outlets, the surface spillway, the still basin and auxiliary energy dissipators. 1998年汛期隔河岩水利枢纽观测部位为深孔、表孔及消能工。
The question of passive localization of the underwater sources using matched-field processing is one of the hot topics in the field of underwater acoustical signal processing. Water Acoustic Effect Caused by High Energy Charged Particls& A Laser Simulating Experiment 利用匹配场处理器技术对水下目标进行被动定位是国际水声界关注的热点问题之一.用激光摸拟实验研究高能荷电粒子水声效应的热声理论
Results of damage localization demonstrate that the output-based modal strain energy method can localize the damage. 针对各种损伤工况进行了模态识别和损伤检测,试验结果表明,基于输出响应的模态应变能法进行斜撑损伤定位是可行的。
This algorithm effectively solves the position problem without any anchor node, conquer the cumulative error problem in traditional anchor-free algorithm, improve the localization precision and save the sensors energy. 这个算法有效的解决了无锚节点的情况下节点定位问题,克服了在传统的与锚节点无关定位算法的累积性错误问题,提高了定位的精度,节约了节点的能量。
While compared with the other two mobile localization algorithm, the localization algorithm based on improved ant colony algorithm not only improves the location accuracy and coverage rates, but also reduces energy consumption and improves the overall location performance of networks. 而基于改进蚁群算法的节点定位与其它两种移动定位算法相比,既提高了定位精度和定位覆盖率,又节省了能量,整体上提高了网络定位性能。
In this case, accurate detection and localization of power quality disturbance are the necessary prerequisite and basis for monitoring and governing power quality, and also the foundation of measuring electrical energy accurately and reasonably from distorted signals. 在电网信号严重畸变的情况下,扰动信号准确的检测和定位,是电能质量监测和治理的必要前提和依据。
Part 1 is an analysis of the localization of energy tax law in China. 第一部分是我国能源税立法的本土化分析。
DWT has good properties of time-frequency localization and energy concentration, which make the information of decomposed subgraphs contains most of the original image information. 二维离散小波变换(DWT)具有良好的时频局部化特性和较好的能量集中特性,能够使得分解后的子图信息包含原始图像绝大多数信息量。
The centralized localization method in WSN needs a great deal of energy consumption, therefore distributed method has been applied to improve this problem. The proposed scheme can process the distributed information from the sensors by using EM algorithm to get the location and energy of the source. 该方法针对无线传感器网络中集中式定位方法能耗过大的问题,采用EM算法对节点获取的声音能量信息进行分布式计算,估计得出声源的位置和能量。
Monte Carlo localization algorithm is an important method to solve this kind of problem. However, a large number of samples are sampled to achieve the positioning. This not only reduced the efficiency of the algorithm, but also consumed a great deal of energy of nodes. 蒙特卡洛定位算法是解决这类定位问题的重要方法,但蒙特卡洛定位算法为实现定位而进行的大量采样不仅降低了算法的执行效率,而且消耗了传感器节点的大量能量。
The time-frequency analysis method is characterized by time-frequency localization. It can simultaneously describe the energy density or intensity of signal in time and frequency. Therefore, this method can reveal the frequency components included in signal and the related variation with time. 时频分析方法是一种时频局域化分析方法,能在时间和频率上同时描述信号的能量密度或强度,揭示信号中所包含的频率分量及其随时间变化的特性。
Localization is able to destroy the regularity of mode of vibration in periodic structure and aberration of vibration mode occurs. Meanwhile, energy accumulation emerges in structure. 局部化破坏了周期结构模态的规则性,使振型发生畸变,造成能量积聚。
The new algorithm will gain higher localization precision without extra hardware; and provide the saving energy solution based on Dew-flooding theory for the disadvantage of large system energy consume resulted from whole flooding in former DV-Hop algorithm. 新算法在不需要额外硬件设施的前提下,能获得更高的定位精度;并针对原DV-Hop算法中因全局洪泛而导致大量系统能耗的缺点,提出了基于露珠洪泛思想的节能方案。
Through the two improvements of the ranging stage and node coordinate calculation stage, the positioning accuracy has been improved compared to the traditional algorithms. Secondly, basic target localization algorithm based on sound energy attenuation model is analyzed and researched in this paper. 通过测距阶段和坐标计算阶段两方面的改进措施,使得改进后的算法定位精度相比传统的算法有一定程度的提高。
Impact different location of structure, impact response signal monitored by FBG is studied. ( 4) Impact loading localization algorithm is proposed. Feature extraction of acquisition impact response signal is realized with signal energy of different frequency segment using wavelet packet analysis used as characteristic index. 提出一种冲击载荷定位算法,对传感器采集的冲击响应信号进行特征提取,采用小波包分析方法提取冲击响应不同频段内的信号能量特征指标。
By analyzing the transmission spectrum and MPSH states at zero bias, we find that both the energy levels 'sites of the extended molecule and the localization properties of the MPSH orbitals of the corresponding energy levels in an electric field lead to these phenomena. 通过分析各个体系的零偏压下的透射谱和MPSH轨道,发现能级的位置和MPSH轨道在外加偏压下扩展性的改变,共同引起了这些物理现象。
By using the feature parameters as samples, an autoregressive sample model was constructed, the impact localization and energy determination algorithm of composite material was proposed. 把提取到的特征参数作为样本,利用自回归模型对样本信息建立样本模型,进行复合材料层合板的冲击载荷定位及能量等级判定算法研究。