• 实验中证实相位分析方法故障诊断应用优越性

    It can be confirmed by the experiment that all phase analysis method has superiority in the application of fault diagnosis.

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  • 相位数字滤波器(APDF)一种新型线性相位滤波器。

    The All phase Digital filter (APDF) is a new type of linear phase filter.

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  • 文中间断函数进行了相位最小二乘方逼近,逼近误差小于传统方法

    All Phase least square approximation to the discontinuous signal is also introduced with less error than the traditional method.

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  • 由于相位预处理抑制各次谐波干扰,因而大大提高测量精度

    Moreover, since the all-phase preprocessing can suppress the individual harmonics' spectral interference on the fundamental wave, the accuracy is greatly enhanced.

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  • 本文构建了套完整包含种类型FIR滤波器设计体系相位FIR滤波器

    This paper constructs one filter design system which covers 4 types of FIR filters—family of all-phase FIR filter.

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  • 在引入重叠矩阵基础,提出了加窗相位等效f IR滤波器系数向量计算通式。

    Based on introducing overlapping base matrix, the general calculating formula for the coefficient vector of windowed all-phase equivalent FIR filter is proposed.

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  • 该文提出了一种基于相位离散余弦变换(APIDCT)内插滤波器的重采样分层编码技术

    This paper proposes a hierarchical coding technique based on the All Phase Inverse Discrete Cosine Transform (APIDCT) interpolation.

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  • 精确估计噪声环境中的信号频率幅值数学证明了全相位DFT优良的抑制频谱泄漏性质

    To estimate signal frequency and amplitude exactly under noisy circumstances, the excellent property of all-phase DFT restraining spectral leakage is mathematically proved.

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  • 针对不同滤波器长度N频率向量设置传统对称偶对称),设计出4相位半带滤波器

    Moreover, corresponding to different filter length N and frequency vector setting modes(traditional symmetry or even symmetry), 4 types of all-phase half-band filters were designed.

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  • 全相位滤波器设计理论基础上,本文证明基于IDCT/DCTAPDF有零相位特性互补特性

    Secondly, to find the suited application, the characteristics of APDF based on IDCT/DCT are discussed. Zero-phase and sub-band filtering with complementary are two characters of APDF.

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  • 论文对相位FIR滤波器进行了仔细研究,设计全相位线性相位FIR滤波器,进一步完善全相位理论

    The dissertation researches All Phase FIR filter deeply and four kinds of All Phase linear filters are designed which make the theory of All Phase more integrity.

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  • 脉冲整形器利用波分复用器将控制光脉冲引入光纤环形镜中,控制光脉冲由于交叉相位调制信号光上产生非线性附加

    Control pulse is coupled into this pulse shaper by wavelength division multiplexer. Nonlinear phase shift of signal laser is induced by control pulse because of cross phase modulation.

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  • 利用恒温控制平台通过测量干涉光电流干涉仪光电流方法,实现光纤干涉仪两臂相位测量。

    The initial phase difference of the fiber interferometer is calculated by measuring the interference photocurrent and the photocurrents from the two fiber arms based on a temperature control plat.

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  • 如果使用相位放大器测量交变测量误差减小量程的0.4%以内。

    By using a double phase lock in amplifier to measure the AC strain, the measurement error can be decreased to 0.4% of the total measurement range.

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  • 传统的控阵体制雷达都是采用相干信号,通过控制发射单元信号之间相位使得雷达波束指向发生改变

    The phase array radar USES same signal, and controls the phase of each transmitter signal. So the direction of beam-form can change.

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  • 半导体放大器为非线性元件的开关中,由于SOA交叉增益调制交叉相位调制并存,会导致光开关输出端口性能有所差异

    For SOA-based all-optical switching, because cross-phase modulation and cross-gain modulation is co-exist in SOA, the properties of each output port is different.

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  • 本文提出一种利用基微线形滤波功能超高速关键码型(ook)相位键控码型(PSK)的格式转换方案

    A scheme to achieve ultrahigh speed all-optical format conversion from on-off keying (OOK) to phase-shift keying (PSK) by using the linear filtering in the silicon ring resonators is proposed.

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  • 建立了拼接检测计算模型。利用最小二乘法计算得到拼接参数,从而恢复大口径光学元件孔径波前相位分布。

    The calculation model is established based on the theory of the least-square method, and a set of testing equipment is designed.

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  • 建立了拼接检测计算模型。利用最小二乘法计算得到拼接参数,从而恢复大口径光学元件孔径波前相位分布。

    The calculation model is established based on the theory of the least-square method, and a set of testing equipment is designed.

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