目标

With the development of radar technology and the complication of targetbackground, more and more information which is not only angle but also range need beknown to target in order to track and orientate accurately.

随着雷达技术的发展及探测目标背景的复杂性，对目标要求了解的信息也越来越多，不仅要获得目标的距离信息，而且还要获得目标的角度信息，以便进行准确的跟踪和定位。

With the development of radar technology and the complication of target background, more and more information which is not only angle but also range need be known to target in order to track and orientate accurately.

随著雷达技术的发展及探测目标背景的复杂性，对目标要求了解的信息也越来越多，不仅要获得目标的距离信息，而且还要获得目标的角度信息，以便进行准确的跟踪和定位。

The writter points out the teaching goal of P E is the same as talent cultivating goal.Teaching goal of P E is a complex system including much relevance contends and different teaching goal has its different character.

笔者认为普通高校体育教学目标与我国人才培养的目标是一致的；体育教学的目标是由诸多相关内容构成的复杂系统；不同类型的体育教学目标具有其不同的特点。

So, the work in this thesis focuses on three aspects:(1) Analyzing the geometrical structure feature and spectral feature of typical linear targets in the multispectral image and the panchromatic image.

因此，本文的研究内容包括：(1)多光谱影像中典型线状目标区域的几何和光谱特征分析，在目标知识表达和推理的基础上，建立典型目标模型，对单源影像进行目标区域分割。

All above laid a foundation for the research of polarimetric information processing and application. Then, target optimum polarization and polarimetric synthesis technique were studied. By constraining polarimetric states of transmitting and receiving antennas, co-polarized and cross-polarized signatures were obtained. Because the received wave was partially polarized, completely polarized, completely unpolarized, and total available power signatures were defined based on the power of the return wave.

接着，论文深入研究了目标最佳极化和极化合成技术，通过约束收发天线的极化状态可以得到共极化特征图和交叉极化特征图，由于雷达接收的电磁波通常是部分极化的，根据接收波的平均功率密度可以得到未极化特征图、完全极化特征图和匹配极化特征图，在极化特征图空间中搜索可以很容易地获得目标的最佳极化，这些目标最佳极化可以作为极化目标识别和分类的极化特征。

The character of the target noise is studied systematically, especially the spectrum character of target noise are deeply analyzed. On the basis of it, the power spectrum of two sorts of target noise is estimated with the method of average periodogram using the actual measured data of target noise.

系统地研究了目标声场特性，对目标噪声的产生及其频谱特性进行了深入分析，在此基础上，利用目标噪声实测数据，采用加窗平均周期图法，对两类目标噪声进行了功率谱估计，并对其频谱特性进行了深入分析和研究。

The most parts of thesis as follows:1. Five symmetrical intra-molecular charge transfer oligomeric phenylene vinylene light emitting materials were designed and synthesized using oligomeric phenylene vinylene as a framework.2. The structures of target molecule were characterized by ~1HNMR,~(13)CNMR, IR, MS and element analysis.3. In order to study the influence of the location and numbers of electron-donor and electron-acceptor on their photoelectric performance by changing length of OPV chain, the UV spectra and fluorescence spectra of target compounds has been compared. We have researched into main factors effecting on material emitting red-shift; organic electroluminescence device was prepared using the compound P4. The capability of eletroluminescence was researched.4. The photoelectric properties of P4 was explained by quantum chemical calculation (the Gaussian 98 quantum chemistry program). It is greatly contributed know the whole process of charge transfer to guide the design of red emitters.

本文研究的内容主要包括以下部分：(1)设计并合成5个对称的以齐聚苯乙烯类为骨架的分子内电荷转移型齐聚苯乙烯类发光材料；(2)通过IR，MS，~1H-NMR，~(13)C-NMR和元素分析对所合成的目标化合物进行表征；(3)通过对目标化合物的紫外光谱和荧光光谱比较分析，研究改变OPV的长度，电子给体和电子受体的位置及数量对其光电性能的影响，探讨材料发射红移的主要因素；选取性能良好的目标化合物P4制备成OELD器件，对其电致发光性能进行研究；(4)运用Gaussian98量子化学程序包，采用量子化学方法对目标化合物P4的光电性能从理论加以解释，进一步认识荷移跃迁的整个过程，为红光材料的设计加以指导。

The uniformity degree and rank of the population are given to measure the distribution and quality of the solutions in the population based on the characteristic. Using the uniform degree of the population as objective function and the rank as the constrained condition, the bi-objective optimization problem is transformed into a single objective constrained optimization problem. The computational equations of the charge and force exerted on the particles are presented.

针对这一特点，定义了种群的均匀度和序值，来度量种群中解的分布和质量，将双目标优化问题转化为以均匀度为目标函数，序值为约束条件的单目标优化问题；设计了双目标优化问题粒子的电荷和受力的计算公式，提出了一种新的类电磁算法求解问题。

The main contents is: analyzing some detection method to moving target nowadays; particular studying the principle of detection moving target in SAR; analyzing SAR imaging theory and the echo model of moving target; discussing conventional SAR imaging , the movements of target cause the changes of doppler mass center and regulable frequency, and the changes cause effect the imaging result; introducing the estimation method of doppler parameter; analyzing theory of DPCA, derivating the formula needed, and validating it's validity and practicability through simulation; advancing the improved DPCA algorithm that combine the advantage of DPCA and ATI, and validating it through computer simulation; using the revision algorithm to range ambulate based on keystone transformation, and validating it through computer simulation; discussing the compensation art of SAR imaging.

主要内容有：分析了现有的一些动目标的检测方法；详细研究了SAR动目标检测的原理；分析了SAR成像理论和运动目标的回波模型；探讨常规SAR成像时，目标运动引起的多普勒质心和调频率变化，以及这些变化对成像结果的影响；介绍了多普勒参数的估计方法；分析了DPCA原理，推导所需要的基本公式，并仿真验证其有效性和实用性；提出了结合DPCA和ATI优点的改进DPCA算法，并仿真验证；探讨了SAR成像中的运动补偿技术。通过对仿真结果的分析，本文提出的方法具有一定的指导意义和参考价值。

This paper expounds a methodology which employs spectral reflectance, geometric property and texture feature of a given target synergistically under the framework of feature-level information fusion.

利用多光谱遥感影像进行地物目标识别和提取已经有20多年的研究历史，取得了一定的研究成果，但是已有的地物目标识别提取方法所用到的地物目标的特征信息还比较单一，因此地物目标的识别率和提取效果还不够理想。

Neither the killing of Mr Zarqawi nor any breakthrough on the political front will stop the insurgency and the fratricidal murders in their tracks.

在对危险的南部地区访问时，他斥责什叶派民兵领导人对中央集权的挑衅行为。

In fact,I've got him on the satellite mobile right now.

实际上 我们已接通卫星可视电话了