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基于集对分析的混合型多属性决策方法的研究 总被引:2,自引:1,他引:1
针对属性权重信息不完全且属性值为实数、区间数和模糊语言值相结合的混合型多属性决策问题,提出了一种基于集对分析的多属性决策方法.该方法所需计算量较少,方法简单,易于计算.最后通过实例验证了该方法的有效性和实用性. 相似文献
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In this paper, a chaos system and proportional
differential control are both used to detect the frequency of an
unknown signal. In traditional methods the useful signal is obtained
through the Duffing equation or other chaotic oscillators. But these
methods are too complex because of using a lot of chaos oscillators.
In this paper a new method is presented that uses the R?ssler
equation and proportional differential control to detect a weak
signal frequency. Substituting the detected signal frequency into
the R?ssler equation leads the R?ssler phase state to be
considerably changed. The chaos state can be controlled through the
proportional differential method. Through its phase diagram and
spectrum analysis, the unknown frequency is obtained. The simulation
results verify that the presented method is feasible and that the
detection accuracy is higher than those of other methods. 相似文献
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本硕EDA/SOPC系列课程建设 总被引:1,自引:0,他引:1
电子设计自动化EDA是电子技术先进的设计方法,是现代电子设计工程师所必须掌握的技术.为使我校EDA/SOPC课程建设跟上科技的发展,本课题从EDA创新实验基地的构建、课程体系设置、课程内容改革等方面着手,全方位地开展了EDA/SOPC系列课程建设.提出了本硕一体化建设模式:包括教学内容互相渗透、教师队伍一体化、实验平台共享等,已收到很好的建设效果. 相似文献
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基于RX算法的高光谱红外弱小目标检测 总被引:1,自引:2,他引:1
主要针对高光谱红外图像中弱小目标的检测方法进行研究,根据目标检测的RX算法模型,给出了算法在高光谱目标检测中的性能评价,分析了检测器像元数、光谱波段数对算法性能的影响,在RX算法及相关改进算法的基础上,通过对AVIRIS数据的仿真实验,分析了相关矩阵在高光谱目标检测中算法的应用优势,提出了一种目标自动检测方法,验证了UTD算法对有特定波段依赖性的小目标有良好检测效果.理论分析和仿真实验证明了RX算法在红外高光谱目标自动检测中的有效性. 相似文献
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阐述一种新颖的基于NIOS边界扫描测试平台的设计,提出了采用SOPC技术的一种更加灵活、高效的嵌入式系统新解决方案.该方案将边界扫描主控器系统的多功能模块集成在Altera公司推出的低成本、高密度、具有嵌入式NIOS软核CPU的现场可编程门阵列(FPGA)上,大大提高了系统设计的灵活性、边界扫描的测试效率.同时USB接口技术的应用使得边界扫描测试系统具有热插拔,传输速率快等优点.详细论述了具有自主知识产权的JTAG总线控制模块的设计和NIOS平台上USB固件开发.实验结果表明,此测试平台的设计正确有效,能够进行精确的故障诊断. 相似文献
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移动通信系统仿真工具价格昂贵,不利于在教学环节中推广。本文提出了利用Windows操作系统对GSM系统进行仿真,并主要介绍了移动交换机系统部分的仿真。着重阐述了MSC的FSM模型的仿真实现,并且根据最新的资费方案对GSM系统的计费模型进行了仿真。 相似文献
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基于结构相似的小波域图像质量评价方法的研究 总被引:10,自引:1,他引:10
小波域的图像处理已经成为图像处理领域的重要组成部分,研究能嵌入在小波域图像处理算法中的图像质量评判方法显得至关重要.空间域结构相似度SSIM具有计算简单、与主观评分相关性高等优点.本文通过对小波域图像结构特性的研究,提出了小波域结构相似度(DWTSSIM)的图像质量评价方法.实验结果表明DWTSSIM比SSIM更加符合人眼的视觉特性,可以更好地评判图像质量,并且能容易地嵌入在小波域图像处理算法中,在图像处理过程中指导或调节算法. 相似文献
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A set of system based on personal computer for the bi-directional reflectance distribution function (BRDF) measurement was developed, whose laser wavelengths cover 0.6328, 1.34, 3.39, and 10.6 μm from visible to infrared. Stray light in BRDF measurement system was analyzed. It can be reduced and suppressed by the design of the system light path in BRDF measurement system, the choice of the measuring scheme, the processing to the optoelectronic signal, and the radiation control of the optical components and mechanical equipments. So the minimum measurable value of BRDF is less than 10-5/sr. 相似文献
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Optimum Identifications of Spectral Emissivity and Temperature for Multi-Wavelength Pyrometry 总被引:2,自引:0,他引:2 下载免费PDF全文
The main problem of the traditional radiation pyrometry is that fatal errors will be caused by the unknown or varying emissivity. Based on the combined neural networks (CNNE model), we propose an improved method for emissivity modelling. The model structure and the optimum algorithm are described. This method being used,the spectral emissivity and temperature can be fast computed accurately from the spectral radiation measured. 相似文献