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Parameter estimation of radar target scatterer plays an important role in the process of target characteristics analysis and target recognition.

摘要雷达目标散射中心的参数估计对目标特性分析和目标识别有重要意义。

This macro will first shackle your current target and set that target to be your focus target.

束缚你当前的目标并把当前设置为焦点。

The mathematical models of the dynamic target and the tested apparatus are constructed with spherical trigonometry spherics. The general structure of the dynamic target is introduced. The performance, the detail of structure and selection of material of its main components are studied. The mass center and dynamic precision of the dynamic target, the static deformation of rotation arm are calculated and analyzed.

本文主要介绍了新型动态靶标研制的必要性、动态靶标检测的原理；运用球面三角学，建立了动态靶标与被测仪器间的数学模型；介绍动态靶标的总体结构设计，对各重要组成部分的功能、结构及原材料的选择等进行了详细的分析；对动态靶标的重心、旋转臂的静态变形及整机的动态精度进行了分析和计算；最后介绍了动态靶标的标定方法。

The second advantage is that globose targe is the most sensitive to variety of coal powder concentration In the experiment, a testing piping system for coal powder and air two phase flow was built in laboratory. Experiment adopt disk target and spherical target two kinds of target.

将两组试验数据拟和得到的空气单相流关系式的斜率与两相流关系式的斜率进行比较，球形靶试验数据拟和公式的斜率较大，说明球形靶确实比圆片靶对两相流粒子浓度的反应灵敏度高。

On the basis of analyzing the characteristics of the point target, the theoretic analytical method,the design idea and the measure requirements of the plane target which is a new target ship have been put forward.

在分析了点靶性能特点基础上，提出了新型靶船———面靶的理论分析方法、设计思想以及测量要求，其主要思想可以应用于面靶的工程研制中，具有一定的指导作

Support 720p/1080i - Playback files in PC through wired Ethernet (10/100Mbps)- Playback the recorded contents in HDD; Playback the files stored in HDD - directly playback the files on external devices like USB drive, HDD, Card reader(through USB2.0 Host Port)- support multiple file format: MPEG 1 /2/4, DivX, Xvid, VCD/SVCD/DVD, MP3/WMA, Dolby digital, AC3, JPEG, Kodak picture CD - fast forward/reverse, repeat playback - view Pictures in various ways: Rotate, zoom, music slide show Transferring/storage function - with USB2.0 Target port and USB2.0 Host port - work as USB HDD when connected to USB port on PC for file store / backup / transfer (through USB2.0 Target port)- supports USB drive, HDD, Card reader data exchange (through USB2.0 Host port) Editing recorded A/V title without PC - HDD format - AB Erase, split title, merge title, add chapter mark - Copy, delete, Rename Terminals: Composite video in, composite video out, component video out, left/right audio in, left/right audio out, mini optical audio out, RJ45 net port, USB2.0 Host, USB 2.0 Target HDD Support IDE HDD, support FAT32 File Support FAT32 and NTFS Power: DC12V(1.5A) Power consumption: 1W, 6W.

支持720 p/1080i的影像-播放档案的电脑，通过有线以太网（ 1 0/100）-重放所记录的内容，在硬盘；重放档案储存在硬碟-直接播放该档案的外部设备，如U S B驱动器，硬盘，智能卡阅读器（通过u sb 2 0.0主机端口）-支持多种文件格式：的M PEG1 / 2 / 4 ，转换，音频，视像/格式/数码影碟， m p3/wma，杜比数字， a c3，的J PEG，柯达图片光盘-快速前进/扭转，重复播放-看照片以各种方式：旋转，缩放，音乐幻灯片播放转让/存储功能-与U S B2.0的目标端口和U S B2.0主机端口-工作作为U SB硬碟当连接到US B端口的电脑档案储存/备份/转让（通过USB2.0的目标端口）-支持U SB驱动器，硬盘，智能卡阅读器的数据交换（通过U SB2.0主机端口）编辑记录的音频/视频标题，没有电脑-硬盘格式-抗体抹掉的，分裂的所有权，合并名称，地址章马克-复制，删除，重命名终端：复合视频，复合视频，分量视频输出，左/右音频，左/右音效输出，迷你光学音效输出，接头R J45网络端口， U SB2.0主机， USB 2.0接口目标硬盘支持的IDE硬盘，支持FAT32文件的支持和FAT32和NTFS电源：： DC12V （ 1.5A和）耗电： 789， 6瓦特。

On the other hand, with the purpose of fuzzy feature extraction and fuzzy classification device design, the undulatory property of maximum and minimum scattering power corresponding respectively to the maximum and minimum eigen-polarization has been investigated in frequency domain. Furthermore, the anisotropy polarization degree of target, which is determined by both maximum and minimum scattering power of target, has been studied; meanwhile, the dynamic changing characteristic of eigen-polarization on Poincare polarization sphere has been investigated by means of the conception of polarization frequency stability, the research result shows that PSD value has a big jump near π, forming a sharp pulse, and different target has their individual distribution property of PSD pulse.

另外，围绕目标模糊特征提取及模糊分类器的设计，研究了目标最大、最小本征极化所对应的目标最大、最小散射能量随观测频率的起伏特性，考察了由目标最大、最小散射能量共同决定的目标的各向异性极化程度；同时，采用极化频率稳定度的概念，研究了本征极化在Poincare极化球面上的动态变化特性，在最大、最小散射能量相等的频率点上，PSD曲线呈现为幅度接近π值的尖锐脉冲，反映了目标极化散射结构对这一频率跳变极为敏感，但不同目标的这种PSD曲线特征又有很大的不同。

Many polarimetric target decompositions were explored, and support vector machine was applied to the classification of polarimetric SAR image. A new algorithm of target classification was presented based on polarimetric target decomposition and support vector machine. Finally, the effect of classification results was discussed by selecting different kernels and different parameters.

五系统地对各种极化目标分解方法进行了深入的探讨，并应用支持向量机对极化SAR图像进行分类研究，提出了一种基于极化目标分解和支持向量机的目标分类算法，并通过选择各种类型的核函数以及不同的参数，探讨其对地物目标分类结果的影响。

The 3rd, the animal kills moment of alimental of a target to often observe the end is very long in hunt, from dog, to carry out catch kill, inside this paragraph of time, they can consider whether this target can devour, whether be their final ideal is caught reduce a goal, the answer is a target correct.

第三，动物在猎杀一个目标食物的时候往往观察目标很久，从跟踪，到实施捕杀，这段时间内，他们会考虑到这个目标是否能够吞食，是否是他们最终的理想捕杀目标，答案是目标正确。

Besides, the detection of a number of target navigation parameters can be estimated. The goal of this paper is to present a PCA electric field algorithm for calculating the target headings, size/velocity rate and port/starboard location in relation to the electric sensor axis. This PCA algorithm is based on the simultaneous analysis of the three components （longitudinal, athwartship and vertical） of the electric signature in order to compare the time evolution of their waveforms as a way to determine the target parameters.

此外，还可估算探测大量的目标航行参数：目的是提供一种主分量分析电场算法，以计算相对电场传感器轴线的目标航向、尺寸／速率、左右舷位置：此种PCA算法基于同时分析电场特性的3个分量，以便比较这些波形随时间的变化，作为确定目标参数的方法。

A small, rubber-headed hammer used in examination or diagnosis by percussion.

叩诊槌用在通过''。'振荡'。''所作的检查或诊断中的橡皮头的''。'小'。''槌

Affixes are limited in number in a language, and are generally classified into three subtypes, namely, prefix, suffix, and infix, depending on their position with reference to the root or stem of the word.

语言中词缀的数量总是有限的，根据它们跟词根或词干的相对位置，一般可以把词缀分外三小类：前缀，后缀和中缀。