演绎推理和模糊推理在潜艇攻击中的运用研究

介绍两种常见的推理方法——演绎推理和模糊推理,并研究其在潜艇攻击中的运用问题。对两种推理方法进行了对比评述,揭示了二者形式的相似性和本质的根本差异。以潜艇攻击为应用背景,说明两种推理方法在潜艇攻击理论中的重要地位。根据两种推理方法的特点,总结在潜艇攻击中"放心使用"严密演绎推理结论和"审慎使用"模糊推理结论的基本运用原则。     

舰艇编队对潜攻击信息处理研究

舰艇编队对潜攻击信息处理与其攻潜效果密切相关,是潜艇对水面舰艇编队威胁判断的基础性研究内容.以典型的舰艇解算潜艇运动要素方法为例,讨论了编队成员级潜艇要素解算、编队级潜艇要素融合和编队成员攻击要素概算3个编队反潜信息处理步骤的计算过程,推导了初始编队成员探测误差在信息处理流程中的传播.实例分析以非编队条件下的单舰为参照对比说明编队对潜攻击信息处理能够提高各成员的攻击要素概算精度,从而影响编队对潜攻击效果.     

潜艇抗击反潜直升机电子战相关措施和技术

主要从潜艇抗击反潜直升机的声纳探测，采用电磁脉冲攻击手段毁伤反潜直升机的电子信息设备，以及采用水声干扰措施对抗空投鱼雷的攻击等三个方面阐述了潜艇抗击反潜直升机的电子战相关措施和技术。     

自航水雷攻击水面舰艇建模及仿真研究

从潜艇占领布设阵位的可行性方面分析潜艇使用远程自航水雷攻击水面舰艇的作战过程,提出了信息保障条件下潜艇布设远程自航水雷打击台水面舰艇的作战模型。依据不同的目标指示信息,得出潜艇使用自航水雷攻击水面舰艇的战斗行动方案。     

潜艇无线电系统用的电线和电缆

现代潜艇需要现代化的无线电通讯,这就要求电线和电缆必须满足潜艇环境的特殊要求。大约在1945年以前,潜艇部队称之“无声军种”,这和无线电是紧密相关的。潜艇在航行中保持无声和接近无声工作才为最好。“孤独狼”型潜艇的战术亦是这样。然而这种战术和现代潜艇战术的实际情况却差得很远。在攻击潜艇,尤其是实施反潜战时,必须和其它攻击部队的成员,如航空母舰、水面航船、岸基、     

美海军研制新的潜艇EW系统

美国海军为满足沿海作战需要，正在投资全新的潜艇EW系统。美海军在未来的10年中用于潜艇电子设备方面的研制经费将超过10亿美元，加速了潜艇EW系统的更新、改进和改装。研究、研制、试验和技术鉴定的投资将集中于海军新核动力攻击潜艇（NSSN）的C~3I系统研制计划。该C~3I系统是为沿海作战环境设计的，是一个综合的作战系统，包括火控和声纳子系统、干扰、通信、导航、潜望镜／成像和下一代先进潜艇战术ESM作战系统（ASTECS），以及其它EW装置。新设计的ASTECS将在综合的自动的C~3I系统范围内，提供改进的ESM、ELINT和SIG…     

反潜直升机舰艇编队尾后截击潜艇建模

高航速、低噪声的先进核动力潜艇使得水面舰艇编队尾后方向的潜艇威胁越来越大,因而需对此类威胁的应对策略展开研究。针对水面舰艇编队尾后拦截潜艇作战问题,在分析敌潜艇追击阵位与鱼雷攻击阵位的基础上,综合反潜直升机巡航速度、留空时间等因素,建立了反潜直升机尾后拦截阵长度、拦截阵设置阵位、拦截阵有效工作时间的计算模型,并对编队尾后截击区域、声纳浮标拦截阵的设置进行了分析。最后仿真分析了尾追潜艇航速、拦截扇面、拦截阵阵位、拦截阵工作时间等因素影响下的拦截潜艇模型。结果表明:敌潜艇航速的提高,将使拦截阵的长度大幅增加;反潜直升机留空时间制约了拦截阵的阵位与有效工作时间。     

固定翼反潜飞机航空自导深弹攻潜效能仿真

航空自导深弹是固定翼反潜飞机的重要攻潜武器, 深弹攻潜效能仿真分析是航空反潜作战效能研究和作战使用的重要依据。通过研究固定翼反潜飞机使用航空自导深弹攻潜的过程, 建立机载搜潜传感器、机载火控系统模型、航空自导深弹空中弹道、水下探测与命中模型、目标潜艇水下运动模型。采用蒙特卡罗法计算仿真固定翼反潜飞机使用航空自导深弹攻击水上、水下状态潜艇的过程, 分析各种深弹攻潜参数对毁伤概率的影响, 最终提出了固定翼反潜飞机航空自导深弹攻潜的最优攻击参数。     

基于Vega Prime的水下航行器视景仿真

针对潜艇发射水下航行器攻击水面目标这一想定进行视景仿真。利用Multigen Creator进行三维实体建模和地形生成,基于Vega Prime实时视景仿真平台开发水下航行器攻击可视化仿真应用,展现潜艇发射水下航行器、水下航行器水下航行和运动,跟踪并攻击水面舰船的场景。能够直观、逼真地演示武器运动状态,实时交互性强,在武器系统设计和论证,武器平台研制仿真中具有实际意义。     

基于攻击效能的网络攻击法分类与形式化描述

网络攻击方法的分类和形式化描述是对网络攻击进行深入研究的基础。分析了现有攻击分类的不足，提出了基于攻击效能的分类方法(NACR)，将攻击方法、攻击工具和漏洞紧密联系在一起；然后，在NACR的基础上提出了一种新的形式化描述方法，给出了与攻击效能密切相关的参量定义，阐述了攻击方法之间的相互关系；最后，通过一个攻击实例具体阐述了网络攻击方案的形式化描述问题。     

Resolution Enhancement Technology:Integrated Process Solutions using OPC

DUV lithography, using the 248 nm wavelength, is a viable manufacturing option for devices with features at 130 nm and less. Given the low kl value of the lithography, integrated process development is a necessary method for achieving acceptable process latitude. The application of assist features for rule based OPC requires the simultaneous optimization of the mask, illumination optics and the resist.Described in this paper are the details involved in optimizing each of these aspects for line and space imaging.A reference pitch is first chosen to determine how the optics will be set. The ideal sigma setting is determined by a simple geometrically derived expression. The inner and outer machine settings are determined, in turn,with the simulation of a figure of merit. The maximum value of the response surface of this FOM occurs at the optimal sigma settings. Experimental confirmation of this is shown in the paper.Assist features are used to modify the aerial image of the more isolated images on the mask. The effect that the diffraction of the scattering bars (SBs) has on the image intensity distribution is explained. Rules for determining the size and placement of SBs are also given.Resist is optimized for use with off-axis illumination and assist features. A general explanation of the material' s effect is discussed along with the affect on the through-pitch bias. The paper culminates with the showing of the lithographic results from the fully optimized system.     

Cost-effective test solutions for smart card and other integrated flash applications

From its emergence in the late 1980s as a lower cost alternative to early EEPROM technologies, flash memory has evolved to higher densities and speedsand rapidly growing acceptance in mobile applications.In the process, flash memory devices have placed increased test requirements on manufacturers. Today, as flash device test grows in importance in China, manufacturers face growing pressure for reduced cost-oftest, increased throughput and greater return on investment for test equipment. At the same time, the move to integrated flash packages for contactless smart card applications adds a significant further challenge to manufacturers seeking rapid, low-cost test.     

Theoretical analysis of the relationship between the Brillouin gain coefficient and the strain in the optical-fiber sensors

The relation between the power of the Brillouin signal and the strain is one of the bases of the distributed fiber sensors of temperature and strain. The coefficient of the Bfillouin gain can be changed by the temperature and the strain that will affect the power of the Brillouin scattering. The relation between the change of the Brillouin gain coefficient and the strain is thought to be linear by many researchers. However, it is not always linear based on the theoretical analysis and numerical simulation. Therefore, errors will be caused if the relation between the change of the Brillouin gain coefficient and the strain is regarded as to be linear approximately for measuring the temperature and the strain. For this reason, the influence of the parameters on the Brillouin gain coefficient is proposed through theoretical analysis and numerical simulation.     

An improved parallel thinning algorithm with two subiterations

The parallel thinning algorithm with two subiterations is improved in this paper. By analyzing the notions of connected components and passes, a conclusion is drawn that the number of passes and the number of eight-connected components are equal. Then the expression of the number of eight-connected components is obtained which replaces the old one in the algorithm. And a reserving condition is proposed by experiments, which alleviates the excess deletion where a diagonal line and a beeline intersect. The experimental results demonstrate that the thinned curve is almost located in the middle of the original curve connectivelv with single pixel width and the processing speed is high.     

Novel fiber-optical interferometer with miniaturized probe for in-hole measurements

Today, micro-system technology and the development of new MEMS （Micro-Electro-Mechanical Systems） are emerging rapidly. In order for this development to become a success in the long run, measurement systems have to ensure product quality. Most often, MEMS have to be tested by means of functionality or destructive tests. One reason for this is that there are no suitable systems or sensing probes available which can be used for the measurement of quasi inaccessible features like small holes or cavities. We present a measurement system that could be used for these kinds of measurements. The system combines a fiber optical, miniaturized sensing probe with low-coherence interferometry, so that absolute distance measurements with nanometer accuracy are possible.     

Study of waveguide coupling efficiency in hybrid silicon lasers

This paper presents a new method to increase the waveguide coupling efficiency in hybrid silicon lasers. We find that the propagation constant of the InGaAsP emitting layer can be equal to that of the Si resonant layer through improving the design size of the InP waveguide. The coupling power achieves 42% of the total power in the hybrid lasers when the thickness of the bonding layer is 100 nm. Our result is very close to 50% of the total power reported by Intel when the thickness of the thin bonding layer is less than 5 nm. Therefore, our invariable coupling power technique is simpler than Intel＇s.     

Teleportation of an arbitrary unknown N-qubit entangled state under the controlling of M controllers

A new quantum protocol to teleport an arbitrary unknown N-qubit entangled state from a sender to a fixed receiver under M controllers(M < N) is proposed. The quantum resources required are M non-maximally entangled Greenberger-Home-Zeilinger (GHZ) state and N-M non-maximally entangled Einstein-Podolsky-Rosen (EPR) pairs. The sender performs N generalized Bell-state measurements on the 2N particles. Controllers take M single-particle measurement along x-axis, and the receiver needs to introduce one auxiliary two-level particle to extract quantum information probabilistically with the fidelity unit if controllers cooperate with it.     

A rigorous proof of MIMO channel capacity’s increase with antenna number

It is well known that adding more antennas at the transmitter or at the receiver may offer larger channel capacity in the multiple-input multiple-output（MIMO） communication systems. In this letter, a simple proof is presented for the fact that the channel capacity increases with an increase in the number of receiving antennas. The proof is based on the famous capacity formula of Foschini and Gans with matrix theory.     

Diode-end-pumped Nd:YVO4/LBO lasers with 4.2W continuous-wave output at 457 nm

A continuous-wave (CW) 457 nm blue laser operating at the power of 4.2 W is demonstrated by using a fiber coupled laser diode module pumped Nd: YVO4 and using LBO as the intra-cavity SHG crystal With the optimization of laser cavity and crystal parameters, the laser operates at a very high efficiency. When the pumping power is about 31 W, the output at 457nm reaches 4.2 W, and the optical to optical conversion efficiency is about 13.5% accordingly. The stability of the out putpower is better than 1.2% for 8 h continuously working.     

Call for Papers

正Wireless Body-area Networks The last decade has witnessed the convergence of three giant worlds:electronics,computer science and telecommunications.The next decade should follow this convergence in most of our activities with the generalization of sensor networks.In particular with the progress in medicine,people live longer and the aging of population will push the development of wireless personal networks