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《现代电子技术》2015,(14):59-63
为了提高1553B总线测试系统应对被测系统在拓扑结构或通信协议变化时的快速可重构性,提出一种基于通用1553B总线仿真卡的快速可重构的1553B总线测试软件设计方法。分析当前1553B总线测试系统可重构性不足的缺点,详细介绍快速可重构1553B总线测试软件的设计架构和实现方法。这里提出的软件设计方法通过总线服务划分和代理托管的方式使软件的代码实现不依赖于总线协议的具体格式,并且极大地减少了软件编程的代码量,从而在代码可重构和配置可重构两方面实现软件的快速可重构。该软件设计具有可靠性强、编程效率高、重构速度快,现场可重配置等特点,其应用实例软件的代码重构率小于1‰,并已经在多个航天器的1553B总线子系统测试中取得了良好的效果。 相似文献
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1553B总线全称为数字时分命令/响应型多路传输数据总线,随着计算机技术的发展,该总线技术开始在各行各业得到了广泛的应用.本文基于此,以高速1553B总线控制器通信过程为切入点,首先分析了高速1553B总线控制器通信原理及特点,然后基于双缓冲机制设计了高速1553B总线控制器通信管理系统的总线控制器(BC)和远程终端(RT)两个部分,希望能为相关人员提供些许参考价值. 相似文献
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详细介绍了一种使用FPGA编程,解析1553B总线通信协议以实现远程终端(RT)与总线通信的方法,阐述了1553B总线的通信体系、传输协议和通信方法,深入解析了FPGA中各程序模块之间的关系及功能,并通过试验证明了FPGA程序的正确性与可靠性. 相似文献
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一种1553B余度数据总线的设计 总被引:4,自引:0,他引:4
论述了基于PC机的1553B余度数据总线的一种设计方法。航空电子系统通过余度总线可以大大提高通信的可靠性,可以提高飞机在复杂电磁环境中的抗干扰能力。系统可用于飞机电子系统的地面仿真。 相似文献
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The article describes a model representation of radar probing data in form of a mixture of background and target samples, which is the sum of two random variables with very different parameters. For model development we research the behavior of the central moments of the distribution mix without assuming the distribution law form. An example it is described the detection of the signal at the output of compression system of chirp ionosonde. 相似文献
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解决IP网QoS问题是目前通信领域的研究热点之一.虽然研究已经取得了一定的进展,但人们对于IP 网QoS本身的含义及相关的问题还有着不同的理解.本文将从IP网QoS的定义入手讨论相关的一些问题以及解决IP网QoS问题所做的各种努力. 相似文献
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《Proceedings of the IEEE. Institute of Electrical and Electronics Engineers》1968,56(6):1024-1032
Assuming that visual responses are due to the action of particles on the membrane of the visual cells, the stochastic variability of the response should be a function of the number of particles producing it. Quantitative predictions can be made with the aid of a model proposed in previous articles. It is found that responses produced in visual cells of Limulus by absorption of a single photon have the stochastic properties which would be expected if the response to one photon were brought about by 25 particles. It is concluded from this that the processes leading to visual responses produce multiplication of particles. The effects of temperature and of metabolic poisons suggest that these processes are of chemical nature. 相似文献
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罗晓羽 《信息技术与标准化》2008,(6):37-39
论述了推进电子行业标准制修订项目计划管理信息化的必要性.并提出了具体措施;详细介绍了电子行业标准制修订项目计划管理数据库的设计思路和实现方法.阐述了对后续工作的几点思考. 相似文献
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对影响镍镀层内应力的因素做了介绍和分析,提出了对收缩应力的一种解释,提供了排除这些因素影响的方法,指出重视镀液的管理是减少各种影响内应力因素的主要办法。 相似文献
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By means of exact conformal mapping method we have defined character of dependence of squares amounts of angular part of film
element on angled part dimension. We propose relations, approximating obtained dependence. Calculation results and experimental
researches of large-scale models are represented. 相似文献
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Moshrefzadeh R.S. Radcliffe M.D. Lee T.C. Mohapatra S.K. 《Lightwave Technology, Journal of》1992,10(4):420-425
The temperature dependence of refractive index of polymer films was determined for a number of slab waveguides by a grating coupling method. This dependence was examined as a function of parameters such as molecular weight and glass transition temperature of the polymer. Temperature-induced changes in N TE-N TM , N being the effective index, were studied systematically for different slab waveguide compositions. It is shown that with proper device design and choice of polymeric materials, thermal effects can be reduced 相似文献
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A. M. Emel’yanov 《Semiconductors》2010,44(9):1134-1139
A method for analyzing the luminescence spectra of semiconductors is suggested. The method is based on differentiation of
the spectra. The potentialities of the method are demonstrated for luminescence in the region of the fundamental absorption
edge of Si and SiGe alloy single crystals. The method is superior in accuracy to previously known luminescence methods of
determining the band gap of indirect-gap semiconductors and practically insensitive to different conditions of outputting
radiation from the sample. 相似文献