共查询到20条相似文献,搜索用时 62 毫秒
1.
本文针对目前地方电视台设备更新,以非线性编辑设备存在的优势与缺陷为切入点,对非线性编辑系统的应用进行归纳探讨,并根据非线性编辑系统的应用特点,对地方电视台如何选用非线性编辑设备进行了详细的阐述,对地方电视台建设非线性编辑制播一体化网络,向智能化、网络化发展具有一定指导意义。 相似文献
2.
随着非线性编辑系统在广播电视领域的应用日益广泛,带给广电从业者更加快捷、高效的生产流程和工作方式,非线性编辑系统被广泛应用于影视节目的后期制作,本文从非线形编辑的基本概念入手,介绍了非线性编辑的系统构建,探讨了非线形编辑技术及其应用,对非线性编辑系统的软硬件平台进行了概括,最后对非线性编辑系统的发展趋势进行了分析。 相似文献
3.
非线性目标的探测与识别在国防、反恐、安保、救援、交通安全等领域均具有重要意义.为提高上述场景下对非线性目标的探测识别能力,文中以典型的非线性器件——肖特基二极管为例,构建了非线性目标的谐波散射模型,并在此基础上利用不同类型非线性目标散射的各次谐波强度与变化趋势不同的特性,提出了一种利用数理方法提取分析目标散射特征参数进而实现对非线性目标探测识别的方法.实验结果显示,本次提出的方法在小样本下对未知非线性目标的识别率在81%左右,证明了该方法对非线性器件有较好的探测与识别能力. 相似文献
4.
本针对目前地方电视台纷纷进行设备更新,选用非线性编辑设备,建设制播一体化网络的现实,从详细介绍非线性编辑设备存在的优势与缺陷为切入点,对非线性编辑系统的应用进行了归纳探讨,并根据非线性编辑系统的应用特点,对地方电视台如何选用非线性编辑设备进行了详细的阐述,对于指导地方电视台建设非线性编辑制播一体化网络,逐步向数字化,智能化,网络化发展具有一定的指导意义。 相似文献
5.
6.
7.
8.
非线性滤波理论的研究在近年来取得了很大的进展,相继出现了一些次优和最优的非线性滤波算法。本文首先对滤波理论的研究现状作了一个系统的总结,同时对现有各种非线性滤波方法的效率和精度进行了认真的分析和比较,在此基础上,指出了未来非线性滤波的发展趋势,最后针对组合导航系统自身的特点,介绍了近年来涌现同来的与之相关的各种滤波算法,通过对各种算法性能的比较,揭示了组合导航系统中非线性滤波技术的未来发展方向。 相似文献
9.
随着光伏探测器在傅里叶变换红外(FTIR)光谱探测领域的广泛应用,光伏型器件的响应非线性现象逐渐成为影响FTIR光谱反演精度的关键问题。文章对光伏探测器的响应非线性进行研究,首先,总结了光伏探测器的一般原理与等效电路;然后,对导致探测器出现响应非线性的内部效应与外部因素进行分析;最后,总结了内外因素之间的关联,并在结论中给出了对探测器进行非线性校正的工作方向。这对揭示半导体器件对不同通量辐射的响应规律、对于改善研究光伏探测器的非线性问题以及提高FTIR光谱探测精度具有重要的意义。 相似文献
10.
阐述了数字硬盘录像系统中的非线性检索技术,介绍了非线性检索的检索方式,并对非线性检索的检索文件格式进行了比较和探讨,分析了本系统采用的基于时段的检索技术。 相似文献
11.
Michael Reilly 《半导体技术》2004,29(12)
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. 相似文献
12.
Thomas M.Trexler 《半导体技术》2004,29(5)
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. 相似文献
13.
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. 相似文献
14.
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. 相似文献
15.
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. 相似文献
16.
Qi-jiang Ran Pei-de Han Yu-jun Quan Li-peng Gao Fan-ping Zeng Chun-hua Zhao 《光电子快报》2008,4(4):239-242
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. 相似文献
17.
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. 相似文献
18.
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. 相似文献
19.
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. 相似文献
20.
《中国通信》2014,(7)
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 相似文献