• 本文中讨论光子能带结构非常有效矢量多重散射方法计算方法可以精确处理介电函数界面附近突变

    The photonic band structures are calculated by an efficient vector-wave multiple scattering method which can deal accurately with the sharp changes of dielectric functions near the interface.

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  • 利用矢量函数定义性质,提取出场的径向分量,将初级分解为相对于径向的TETM避免复杂矢量微分运算

    Using the definition and character of vector function, the field is separated to TM wave and TE wave relative tor without complex vector-differential operation.

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  • 本文禾费光栅衍射进行分析方法常用振幅矢量相比,分析衍射条纹位置要快捷,明了。

    The authors show that using the half-wave strip method to deduce the bright and dark fringe conditions of Fraunhofer grating diffraction is simpler than the amplitude vector method.

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  • 分量反射地震本质矢量反射

    The essence of three component seismic reflection is three dimensional vector reflection field.

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  • 未知阵列响应矢量条件下,利用信号多普勒信息,估计出期望信号方向

    The Doppler frequency of signals was used to estimate the direction of arrival (DOA) of desired signal with unknown array response vector.

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  • 使用矢量网络分析仪射频材料进行测试过程中,由于矩形同轴装置阻抗匹配,将引起希望有的反射。

    In the process of measuring radio frequency absorb material by vector network analyzer, the impedance of rectanglecoaxial measuring device is mismatched and cause redundant reflection.

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  • 文中使用变换人脸高维图像矢量进行压缩设计了一个支持向量机分类器系统来识别人脸。

    This article utilizes the wavelet transform to compress the high dimensional face image vectors, then devises an SVM classify system to recognition the face.

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  • 阐述如何利用地震台观测得到倾斜矢量固体潮半日进行潮汐导纳分析

    The tide admittance analysis for the semidiurnal wave of the earth tide by use of the vector pattern of ground tilt observed at seismostations is expounded.

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  • 本文讨论了极化电磁随机介质中多次散射传输热辐射斯托克斯矢量辐射传输理论

    The radiative transfer theory of Stokes vectors is developed to study multiple-scattering, propagation, and thermal emission in random media.

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  • 本文对目前流行的各种方法进行了归类主要思想边缘保持矢量量化变换插值分形技术以及边缘模型

    And this paper classifies the popular methods, the main ideas are as follows: edge preserving, vector quantization, wavelet transform, interpolation kernel, Fractal technology and edge model.

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  • 提出一种应用变换提取分类特征基于支撑矢量通信信号调制识别方法

    A new method of modulation identification for communication signals, using wavelet transform to extract characteristics and based on support vector machines (SVM), is proposed.

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  • 目前变换矢量量化以及嵌入式编码已经成为图像压缩主要技术研究热点越来越受到重视。

    Nowadays, wavelet transform, vector quantization and embedded encoding has been the primary technique and study focus for image compression, to which people attach their more importance.

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  • 空间电压矢量形成PWM基础上,通过两个矢量作用时间不同分配调节矢量作用顺序,形成了不同形式的电压形。

    Based on the method of SVPWM, various forms of phase voltage waveforms are generated by adjusting the duty time of the two zero vectors and the duty order of every vector.

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  • 提出了基于变换HSI空间彩色纹理墙地砖图像的特征提取算法得到具有颜色、纹理尺度融合信息特征矢量

    A new feature algorithm is proposed based on wavelet transform in HSI space to obtain a feature vector with combining information of color, texture and scale.

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  • 为了提高车牌字符识别准确率提出结合支撑矢量(SVM)的字符识别方法。

    To improve the recognition accuracy of the characters on car license plate, a novel method based on support vector machine (SVM) and wavelet decomposition was proposed.

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  • 并以三相可控整流电路滞环比较方式电流跟踪控制、利用S函数实现空间矢量脉宽调制说明软件使用方法

    Three-phase half wave controlled rectifier, hysteresis comparison mode current track control, and realization of SVPWM by S-Function are used as examples to describe the usage of the software.

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  • 作者该文中从世界空间坐标四维矢量出发证明电磁相位不变性。

    This article, on the basis of four dimensional coordinates and four dimensional wave vectors of world space, proves the phrase constancy of electromagnetic waves.

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  • 矢量量化和小变换结合方面,提出一种基于视觉特性的小变换跨带矢量量化压缩编码方案,通过实验验证算法的性能;

    Based on the former two theories, we propose a wavelet transform cross-band vector quantization based on human vision, and we verify the correction with experimentation.

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  • 电磁椭圆极化参数描述了电磁矢量特性

    The vector characteristics of electromagnetic wave are described with elliptic polarization parameters of the electromagnetic waves.

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  • 采用特殊矢量量化编码,叫作矢量量化(WTVQ)编码每个数据进行压缩获得较高压缩性能

    Then a special Vector Quantization, called Wavelet Tree Vector Quantization (WTVQ), is designed to compress the every spectral image data, and a higher compression performance is obtained.

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  • 方法将树型小颇纹理能量特征灰度共生矩阵特征、树型小灰度组成的特征矢量对SAR图像进行分类。

    The feature vector is composed of wavelet texture energy features, texture features based on the gray-level co-occurrence matrix and the tone of filtered SAR image by using tree wavelet.

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  • 矢量例,具体讨论了衰减电磁振幅位相以及衰减的衰减长度

    For the electric vector of electromagnetic wave. we discussed its amplitude, wavelength, phase, and attenuation length.

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  • 控制策略阶梯法、移法电压空间矢量

    There are many control strategy, such as stair waveform, carrier phase shift, voltage space vector and so on.

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  • 编码方案中,运动矢量获取采用了可变块大小的多分辨运动估计算法,运动估算域中进行

    In the scheme, 2-d motion vectors are obtained by a variable block-size multiresolution motion estimation algorithm and motion estimation is realized in the wavelet domain.

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  • 利用矢量平面计算三角结构光子型光子晶体光纤的带隙分布。

    The photonic band-gap of triangle structure photonic band-gap PhotonicCrystal Fiber (PBG-PCF) is computed by FPWM.

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  • 进行矢量量化首先对系数进行视觉加权然后采用了同向频带方法系数进行矢量组织

    Before quantifying, the wavelet coefficients should be given a vision weight, and then organized in the way of across different subbands according to the same direction.

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  • 详细地讨论了有关调制若干参数矢量、幅、位相等

    Several parameters related to modulation wave, such as wave vector, wave length and argument phase etc.

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  • 本文电磁在手征介质中的传播进行了研究,利用矢量圆法传播中介质所表现出的表面阻抗导纳进行了推导。

    This paper studied the characteristics of electromagnetic wave propagation in chiral media, and got the expessions of surface impedance and admittance by use of vector circle method.

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  • 这种矢量模式方法物理概念清晰且稳定收敛可以处理任意偏振态平面入射到二维亚金属光栅中的衍射问题

    Physical idea of the vector method is clear, stable and convergent. The diffraction problem of plane wave with polarization incident upon 2-d sub-wavelength metal gratings can be processed.

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  • 这种矢量模式方法物理概念清晰且稳定收敛可以处理任意偏振态平面入射到二维亚金属光栅中的衍射问题

    Physical idea of the vector method is clear, stable and convergent. The diffraction problem of plane wave with polarization incident upon 2-d sub-wavelength metal gratings can be processed.

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