多极化多特征融合的雷达目标识别研究

雷达多极化组合态距离像与单极化组合态距离像相比包含了更多的目标信息,因此也具有更强的目标鉴别能力;而距离像不同的特征同样包含了具有一定差异的鉴别信息,可以用来提高距离像的总体识别能力。基于D-S证据理论将多极化信息和六种常用的距离像特征信息有效融合起来,获得了较高的识别率,基于仿真数据的实验验证了结论的正确性。     

多空中作战平台协同对抗多目标态势分析方法

为了对多机协同对抗多目标的作战态势进行定量分析,根据多机协同对抗多目标的空战特征,基于神经网络和证据理论,以传感器和武器能力为证据建立敌我双方对抗态势分析识别框架。将学习引入证据合成过程,用神经网络学习对基本可信数修正系数进行优化,使证据合成能够体现证据之间的相干性和主次关系。以无人作战飞机编队对抗敌地对空防御系统为例,对所研究的态势分析方法进行了验证。获得的计算结果与通过策略实际含义分析的结果相一致,具有合理性。     

复杂网络演化博弈理论研究综述

综述复杂网络的结构特性对演化博弈动力学的影响的最新研究成果,研究个体在相互作用和冲突中的策略选择和演化问题,关注自私个体中合作现象的涌现。着重介绍了受到广泛关注的囚徒困境和雪堆博弈两个简单的博弈模型,并利用复杂网络刻画了个体间的联系,研究了空间结构与博弈动力学之间的关系,探讨了未来工作的研究方向。     

Retinex理论在航空影像增强中的应用

在航空影像的成像过程中,由于大气衰减、云层、烟雾、向阳、背阳等影响,使获取的影像质量下降,出现对比度降低、亮度不均、色彩失真等问题。针对这些问题,提出结合人眼颜色恒常性的典型计算理论Retinex理论,来模拟人眼视觉的感知模型,通过一个像素和其周围像素的明亮度比较运算,获得对象表面的反射率影像,并基于"灰度世界"假设,对图像进行了后处理。给出了Retinex算法在航空影像增强中的具体实现流程,并进行了计算机仿真实验。结合方差、平均梯度、清晰度等参数,验证了算法在图像对比度、细节增强和色彩保真等方面的效果。     

Rough function model and rough membership function

Two pairs of approximation operators, which are the scale lower and upper approximations as well as the real line lower and upper approximations, are defined. Their properties and antithesis characteristics are analyzed. The rough function model is generalized based on rough set theory, and the scheme of rough function theory is made more distinct and complete. Therefore, the transformation of the real function analysis from real line to scale is achieved. A series of basic concepts in rough function model including rough numbers, rough intervals, and rough membership functions are defined in the new scheme of the rough function model. Operating properties of rough intervals similar to rough sets are obtained. The relationship of rough inclusion and rough equality of rough intervals is defined by two kinds of tools, known as the lower （upper） approximation operator in real numbers domain and rough membership functions. Their relative properties are analyzed and proved strictly, which provides necessary theoretical foundation and technical support for the further discussion of properties and practical application of the rough function model.     

New results on the robust stability analysis of neural networks with discrete and distributed time delays

Delay-dependent robust stability of cellular neural networks with time-varying discrete and distributed time-varying delays is considered. Based on Lyapunov stability theory and the linear matrix inequality （LMIs） technique, delay-dependent stability criteria are derived in terms of LMIs avoiding bounding certain cross terms, which often leads to conservatism. The effectiveness of the proposed stability criteria and the improvement over the existing results are illustrated in the numerical examples.     

双站RCS计算GRECO算法的新改进

针对利用单双站等效法存在的大角度双站雷达散射截面计算误差太大的问题和用被光照面作为积分区域计算双站雷达散射截面方法存在的无法处理相对接收站可见面的识别问题,从感应定理和等效原理出发,基于图形电磁计算方法,提出了双站雷达散射截面图形电磁算法的改进方法,解决了可见面的识别问题,扩大了感应定理和等效原理的应用范围,提高了双站雷达散射截面计算的准确度。通过对典型样件的计算结果比较与公认结果和解析算式结果一致,证明了该方法的有效性。     

Coordination Model Research Based on Command Decision Joint Intension

Command Decision Simulation （CDS） is not only an important and difficult issue in the field of simulation, but also a technique issue to be tackled in the course of collective Modeling and Simulation in Joint Operations Experiment Center. CDS can give support to all kinds of simulation. Using computer to realize the Blue side＇s command deci- sion automatic execution in the operation training simulation system can improve training effect. Using computer to realize the lower level command unit＇s automatic command deci- sion can help to reduce the number of controllers and release them from heavy work. It can also enlarge simulation scale and increase the freedom of the simulation entity especially the command entity, thus enhance the authenticity and credibility of the simulation. Ac- cording to the command decision structure and the Joint Intention Theory, the thesis puts forward the method of making use of Coordination Matrix （CM） to realizing cooperation among the entities in CDS and constructs the calculation sketch of Task Execution, Task Monitoring and Task Replanning. At the same time, the thesis brings forward the CDS structure vision based on Partial Global Planning（PGP）. As CM is an indispensable part of combat simulation, the theory and the method of CDS will become an important part for the theory of Combat Simulation.     

用系统论的观点看人——钱学森心身观思想研究

人身上的形神关系既是建立系统哲学必须解决的硬核问题,也是开展人体科学研究必须突破的重点问题。钱学森所倡导的人体科学理论强调用系统方法研究人,研究人身上的形神关系。人体科学对形神关系的探索为哲学理论硬核的范式转换,特别是系统哲学的建立奠定了坚实的理论基础。     

基于飞行体间精确测距的动态相对定位方法

飞行体间的精确相对定位是实现飞行体协同工作的重要技术基础。提出了一种将飞行体惯导信息与相对距离测量信息相结合、实现两飞行体间精确动态相对定位的算法。首先利用较为精确的相对距离测量信息对两飞行体惯导系统的相对误差进行单次修正,提高了两飞行体间的单次相对定位精度。然后,利用相对距离信息进行相对机动状态的检测,并根据检测结果对状态滤波模型进行选择和切换,实现飞行体间的动态相对定位。仿真结果表明,本算法具有较高的相对定位精度和稳定性。