目标识别

How to obtain effective, reliable characteristic parameter from the limited measured data is a question of great importance in feature extraction.

特征提取是目标识别的关键，如何从有限的测量数据中获取有效、可靠的特征参数，是特征提取中重点考虑的问题。

In this paper, cross ratios of the four collinear points and five coplanar points were analyzed first, then some affecting factors were concluded, and some constraints were proposed on constructing model-based object recognition system.

首先对共线4点和共面5点构成的交比不变量的稳定性进行了分析，得出了影响稳定性的因素，然后提出在构造目标识别系统的模型时应注意的约束条件，实验表明：在这些条件下构造模型的抗噪声能力大大提高。

Finally, the way of the double-JPS interference in order to simplify the architecture and the processing program of joint transform correlator are proposed.

最后，为了简化联合变换相关器的结构和处理过程，提出了用双功率谱干涉的方法进行目标识别。

Based on the analysis to the particularity of the cruise missile attacking, a complete recognition method based on the knowledge is developed.

复杂背景下的目标识别一直是人们关注的问题。

This dissertation has conducted some information superiority oriented research focusing on some key technologies such as information acquiring, object recognition, situation assessment, threat assessment, target assignment, effectiveness evaluation of C~4ISR system, effectiveness evaluation of NCW in cognitive domain and so on. The main research and devotement of this dissertation are listed as follows: 1. Based on the analysis of physical meaning and campaign course of Lanchester linear law, we proposed a model reflecting the impact of surveillance and reconnaissance on force attrition. The model also discussed the effect of asymmetry information on the outcome of the battle, and conquered the disadvantage of Lanchester equation in modeling C~4ISR system.

本文面向信息优势对C~4ISR系统的信息获取、目标识别、态势评估、威胁估计、武器分配、效能评价以及网络中心战等关键技术进行深入研究，取得了一些创新性成果：(1)通过对Lanchester线性率中各参数物理意义及作战过程的分析，建立了反映侦察和监视效果的兵力消耗过程模型，并引入博弈论分析了战场上信息的不对称对交战结果的影响，克服了描述C~4ISR系统的Lanchester方程没有考虑作战单元、对手和环境间的动态交互以及数学结构简单的缺点。

Ellipse registration is very difficult to implement in practical engineering as a kind of image registration.

椭圆配准作为图像配准中的一类，是目标识别研究中的一项关键技术，在工程实现中有很大的困难。

The scattering by different shape and different media such as dielectric chiral or conduct circular cylider or elliptic cylinder are calculated and RCS curves are maped. The relation between the optimal polarization of the chiral elliptic cylinder and incident angle are maped. In accordance with the map, the information which is useful for radar target identification can be obtained.

对不同形状及参数的导体圆柱、椭圆柱，一般介质圆柱、椭圆柱，旋波媒质椭圆柱的散射特性进行了计算，给出了其RCS的变化曲线，并对极化散射矩阵进行了分析给出了旋波媒质椭柱最优极化的分布图，指出了其可提取用于目标识别的极化信息。

Based on the combination of threshold segment, morphological operations and image analysis, guided by experimental knowledge, this paper raised new method to identify soybean seedlings and Goose grass and Alligator Alternanthera.

证明了基于数字滤波器的处理方法是一种有效的图像增强方法，并且可以用来处理模糊图像，增强作物、杂草与背景的对比和清晰程度，为目标识别作预处理。

This is one kind of valid target identification method.

该方法是一种有效的目标识别方法。

It is of reference value for the development of ship identification.

这对舰船目标识别的发展具有一定的参考价值。

We have no common name for a mime of Sophron or Xenarchus and a Socratic Conversation; and we should still be without one even if the imitation in the two instances were in trimeters or elegiacs or some other kind of verse--though it is the way with people to tack on 'poet' to the name of a metre, and talk of elegiac-poets and epic-poets, thinking that they call them poets not by reason of the imitative nature of their work, but indiscriminately by reason of the metre they write in.

索夫农 、森那库斯和苏格拉底式的对话采用的模仿没有一个公共的名称；三音步诗、挽歌体或其他类型的诗的模仿也没有——人们把&诗人&这一名词和格律名称结合到一起，称之为挽歌体诗人或者史诗诗人，他们被称为诗人，似乎只是因为遵守格律写作，而非他们作品的模仿本质。

The relationship between communicative competence and grammar teaching should be that of the ends and the means.

交际能力和语法的关系应该是目标与途径的关系。