机载环境下红外数据实时采集记录系统的研究

机载环境下数据采集记录系统要求具有很高的可靠性、实时性和高速性。给出了一种机载吊舱环境下的红外视频采集记录系统的实现方案，应用于地面跟踪目标红外特性测量系统中。方案在分析红外热像仪信号特性的基础上，设计了数据采集卡，并将IRIG-B码时钟采集和坐舱控制功能集成在上面。经飞行实验证明该方案可靠稳定。     

基于FPGA+eMMC的机载记录装置设计

机载记录装置是飞行器上电子记录设备,对飞行器数据分析起着重要作用。为了可以快速准确地记录飞行过程中的各种参数,该文介绍了基于FPGA+eMMC的机载记录装置设计,分别详细描述了记录装置的硬件和软件程序设计,重点研究了eMMC存储模块的逻辑设计,实现了红外视频数据的采集及回放。该方案设计的记录装置成功地应用于某机载系统,经过实际验证证明了该方案的有效性及可靠性。     

机载多路视频的记录与回放

主要介绍机载多路视频记录与四放技术的现状、原理、方法与实验的部分结果和发展趋势。以四路视频源（一个平视显示器（HUD），三个下视显示器）为例，论述记录的方法与回放的方案，给出一些数据和硬件设计的方法。     

基于MB90092的机载视频标识卡设计

本文介绍了专用视频叠加芯片MB90092，及某型机载视频记录系统中视频标识卡的设计原理及其软硬件实现。     

基于机载数字视频记录仪的嵌入式Linux系统的实现

Linux操作系统在嵌入式开发上应用越来越广泛，文中针对某新型飞机机载视频记录系统，详述了使用Linux的优点和嵌入式Linux系统的构造过程，并用它实现了机载数字视频记录的实时、稳定、高效和低功耗。     

机载机电管理系统数据下载与分析设备设计

针对机载机电管理系统具备独立的故障记录系统的特点,设计了一种基于NVRAM记录信息的数据下载与分析设备设计方案。在该设计中,基于一台数据下载与分析设备,可以实现多套机载机电管理系统故障记录数据的同时下载与解析,通过分析下载的机电管理系统数据,可以为分析机载机电管理系统工作状态和故障排除提供依据。试验结果和测试数据表明,该方案可有效节省硬件资源,缩短故障排查与定位时间,在SRU级维修中使用该设备,可以平均节省30%的排故时间,故障定位准确率提高3.5%。     

基于SZ1510的一种机载数字视频记录系统的设计

通过嵌入式计算机PC104对MPEGA／V编码芯片SZ1510进行配置和控制，可以缩短研制高性能航空机载环境下数字式彩色视频记录仪的开发时间。文中详细介绍了该机载数字视频记录系统的软、硬件设计思想及注意事项。     

基于SoC的机载显示器视频图形融合处理系统

为了满足机载显示器对综合视频图形处理技术的需求,提出了一种基于SoC嵌入式处理平台的机载视频图形融合显示与视频记录系统实现方法。该方法以SoC为核心搭建硬件平台,使用SoC内部集成ARM处理器和视频图形协处理单元执行图形生成算法与外视频采集,配合SoC片上高速存储和显示接口,采用双缓存与多线程并发机制实现视频图形融合显示和外视频实时记录。本方法支持多种格式分辨率的视频源采集和大分辨率图形同步生成。实验结果表明,采用该系统技术后机载显示器采集1024×768分辨率外视频同时生成1920×1080分辨率图形时,融合处理后帧率可达45 fps,能够满足机载显示器实时显示需求。     

MB90092在机载视频记录系统中的应用

介绍专用视频叠加电路MB90092及某型机载视频记录系统中视频标识卡设计原理及其软硬件实现，给出了设计结论。     

机载红外搜索跟踪系统的单站单波段测距测速模型

文中提出一种能使机载红外搜索跟踪系统（ＥＲＳＴＳ）在单站单波段条件下实现被动动态测距测速的技术方案。该方案融合了红外探测器对目标２辐射的呼应信息,利用机哉惯性导航系统（ＩＮＳ）提供了本机状态参数,建立了动态获取目标辐射的响应信息,利用机载惯性导航系统（ＩＮＳ）提供的本机状态参数,建立了动态获取目标距离和速度信息的解算模型－ＳＳＩＲ－ＶＲＭ模型。大量的仿真研究证明了该模型的可行性,其测量精度基本能满     

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.     

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.     

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.     

Curved crystal spectrometer for the measurement of X-ray lines from laser-produced plasmas

In order to diagnose the laser-produced plasmas, a focusing curved crystal spectrometer has been developed for measuring the X-ray lines radiated from a laser-produced plasmas. The design is based on the fact that the ray emitted from a source located at one focus of an ellipse will converge on the other focus by the reflection of the elliptical surface. The focal length and the eccentricity of the ellipse are 1350 mm and 0.9586, respectively. The spectrometer can be used to measure the X- ray lines in the wavelength range of 0.2-0.37 nm, and a LiF crystal （200） （2d = 0.4027 nm） is used as dispersive element covering Bragg angle from 30° to 67.5°. The spectrometer was tested on Shengnang- Ⅱ which can deliver laser energy of 60-80 J/pulse and the laser wavelength is 0.35 μm. Photographs of spectra including the 1 s2p ^1P1-1s^2 ^1S0 resonance line（w）, the 1s2p ^3P2-1s^2 1S0 magnetic quadrupole line（x）, the 1s2p ^3P1-1 s^2 ^1S0 intercombination lines（y）, the 1 s2p ^3S~1-1 s^2 ^1S0 forbidden line（z） in helium-like Ti Ⅹ Ⅺ and the 1 s2s2p ^2P3/2-1 s622s ^2S1/2 line（q） in lithium-like Ti Ⅹ Ⅹhave been recorded with a X-ray CCD camera. The experimental result shows that the wavelength resolution（λ/△ 2） is above 1000 and the elliptical crystal spectrometer is suitable for X-ray spectroscopy.     

Preparation and Characterization of TaN ALD Precursors

High purity organic-tantalum precursors for thin film ALD TaN were synthesized and characterized.Vapor pressure and thermal stability of these precursors were studied.From the vapor pressure analysis,it was found that TBTEMT has a higher vapor pressure than any other published liquid TaN precursor,including TBTDET,TAITMATA,and IPTDET.Thermal stability of the alkyl groups on the precursors was investigated using a 1H NMR technique.The results indicated that the tertbutylimino group is the most stable group on TBTDET and TBTEMT as compared to the dialkylamido groups.Thermal stability of TaN precursors decreased in the following order:TBTDET ＞ PDMAT ＞ TBTEMT.In conclusion,precursor vapor pressure and thermal stability were tuned by making slight variations in the ligand sphere around the metal center.     

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.     

Electronic Structure of Semiconductor Nanocrystals

This paper reviews our recent development of the use of the large-scale pseudopotential method to calculate the electronic structure of semiconductor nanocrystals, such as quantum dots and wires, which often contain tens of thousands of atoms. The calculated size-dependent exciton energies and absorption spectra of quantum dots and wires are in good agreement with experiments. We show that the electronic structure of a nanocrystal can be tuned not only by its size,but also by its shape. Finally,we show that defect properties in quantum dots can be significantly different from those in bulk semiconductors.