激光近炸引信半实物仿真与性能验证系统

研制该系统是为进一步完善激光引信的试验评测体系,为激光引信的性能测试及设计改进提供可重复进行的、量化的标准方法和全面的作战环境模拟.介绍了激光近炸引信半实物仿真及性能验证平台的系统组成、工作原理和关键技术.采用高速滑轨及姿态控制装置模拟弹目交会过程,目标及背景模拟装置模拟激光引信作战环境,通过采集、分析激光引信实物样机的回波、状态信息验证引信性能,采用FPGA开发平台对激光引信信息处理算法进行仿真验证,数字仿真平台开展激光引信虚拟设计验证.研制激光回波高速采集存储设备、模拟设备,建立激光引信数字仿真关键模型,解决了激光引信半实物仿真研究中的关键问题.该系统的建立可以克服外场试验人力物力耗费大、重复性差等弊端,缩短研制周期,降低研制成本拟合的方法.     

基于SysML的飞控系统模型重用技术

针对飞控系统建模中的模型重用问题,改进面向虚拟样机的系统分析和描述方法,提出一种基于系统工程建模语言(SysML)组件(BSC)的飞行控制系统虚拟样机模型重用方法,即"部件、结构;行为、过程"(US-BP)方法;以某型四旋翼无人机为例,说明了飞控系统虚拟样机支持模型重用的实现方式,即基于SysML组件与Simulink组件的仿真设计与实现方法。本文为飞控系统建模与仿真领域中的模型重用提供了重要的技术途径。     

导航、电子对抗、制导

V448 94021251小型FMCW近炸引信高度表/甘休国(电子部10所)11电讯技术一1993,(6)一1~4 文章介绍用于导弹或炮择近炸引信的小型c波段FMCw离度表.分析了影响测高精度的因素,姆出了参数选择的原则,介绍了系统组成和试验结果.高度表装在高123mm锥底直径56mm的圆锥体内.图2参3(许)设计方面所进行的工作,其中包括模型的建立、软硬件设计、功能检测方法,最后给出了样机的测试结果.(文)V448 94021252防空导弹引信与导引头一体化设计/.张志鸿/I制导与引信一1993,(2)一l一6 论述了防空导弹无线电引信与导引头一体化设计的技术途径,包括引信体制和…     

一种导弹引信目标建模与半实物仿真的方法

根据无线电引信目标回波特点,基于部件分解的原理建立了导弹无线电引信的亮点模型,并根据所建模型设计实现了无线电引信半实物仿真系统,分析了实际引信半实物仿真试验结果,证明该方法能够满足引信引战配合试验要求.     

用虚拟样机实现汽车电子模型的开发

讨论汽车电子向基于模型的设计和虚拟样机的转变。将虚拟样机与工作台实验进行比较，说明两的差异。描述了其他一些基于软件的模型技术，来说明有效模型。最后，对虚拟样机做了进一步讨论，给出了用基于模型的汽车安全系统设计的例子。     

雷达机械系统虚拟样机技术实现方法研究

在分析了雷达机械系统性能的基础上,提出了雷达机械系统虚拟样机技术实现途径.系统研究了雷达机械系统的各子系统建模及模型集成技术.利用ProE和Matlab软件建立了机械子系统、液压子系统及控制子系统,并在虚拟样机环境中利用相关集成技术,将各个子系统模型集成,构成雷达机械系统虚拟样机模型.     

计算机预测、排版、绘图等

0316032一种机构系统的虚拟样机设计[刊]/吕美玉∥计算机工程与应用.—2002.38(24).—225 227(L)基于机构原理的机械系统设计往往是一个比较复杂的过程。文章以贴标机设计为例,借助虚拟原型和CAE 技术,实现了一种贴标机的虚拟样机设计,并进行了参数设计优化、虚拟样机仿真和设计验证。参6     

空空导弹制导控制系统虚拟样机的研究与实现

为克服物理样机研制周期长、代价大、效率低的缺点,利用虚拟样机技术及计算机技术,以研究导弹制导控制系统的性能为核心,建立了制导控制系统的各个子模型.介绍了各个子模型的功能及特点,集成制导控制系统虚拟样机仿真平台,验证了虚拟样机平台的合理性.利用该平台在系统开发和运行环境中对导弹制导控制系统进行稳定算法参数优化设计、滤波算...     

红外成像制导系统虚拟样机

建立了基于三维场景的红外成像制导系统虚拟样机。虚拟样机模型分为成像系统、信号处理、运动控制三个模块。在分析各模块实现的基础上,重点研究了虚拟样机与三维场景之间的运动关系及数据交换过程,并实现了数学建模。利用时间放大方法,探讨了解决仿真中实时性与逼真性之间矛盾的途径。最后,利用三维红外场景数据进行了导弹制导过程仿真试验,并给出系统作用距离与探测概率关系、弹道曲线等仿真结果。     

雷达电讯虚拟样机构建与仿真技术研究

基于模型的系统工程(MBSE)是工业4. 0 的核心特征之一。借鉴MBSE 的思想,给出了雷达研发全流程中不同形态的电讯虚拟样机的内涵、作用和模型。提出了支持概念样机、功能样机和工程样机的协同仿真平台架构,研究了多领域专业仿真方法以及模型开发和管理两项关键技术。以机载火控雷达功能样机为例,形象展示了虚拟样机的建模、仿真与评估方法。基于虚拟样机的建模、仿真与虚拟验证手段将是复杂电子系统研制的新模式。     

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.     

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.     

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.     

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.     

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.     

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     

Call for Papers—Feature Topic,Vol.12,No.7,2015

正Information Centric Networking Information-Centric Networking(ICN) is an emerging direction in Future Internet architecture research,gaining significant tractions among academia and industry.Aiming to replace the conventional host-to-host communication model by a data-centric model,ICN treats data content as the first     

JOURNAL OF ELECTRONICS(CHINA)

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NEXT GENERATION WIRELESS NETWORKS–ESPECIALLY THE USE OF MILLI-MICROWAVE BANDS

The global bandwidth shortage of wireless communications has motivated the exploration of the naillimeter wave （ram-wave） frequency spectrum for the next generation wireless communications. Recent advances in RF CMOS technology and high speed baseband signal processing technologies have enabled tile extensive research and development of turn-wave wireless communications. The multi gigabit per second data rate of ram-wave system will lead to applications in many important scenarios, such as WPAN, WLAN,back-haul for cellular system. And the frequency bands include 28 GHz, 38 GHz, 45GHz, 60GHz, E-BAND and even beyond 100 GHz. The propagation and the imitation of the RF circuits design in these frequency bands make the directional antennas be inevitable for mm-wave communications.