• This thesis makes a research on the frequency-shift acquisition and technologies about microcomputer monitoring.

    本文针对微机监测系统中移频采集机功能的实现和微机监测相关技术进行了研究。

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  • Aimed at the demand of intelligent data management for UM71 frequency-shift capacitance online measurer, a data support system is designed and developed.

    针对UM 71移频电容在线测试仪测量数据智能化管理的要求,设计、开发UM 71移频电容在线测试仪数据支持系统。

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  • A form of frequency modulation in which the carrier frequency is shifted between a mark frequency and a space frequency in response to the impressed intelligence signal (frequency-shift keying).

    频率调制的一种方式,其中载波频率在标志频率和场频率之间移动,以响应外加的情报(数据)信号。

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  • Your transmitter has occurred frequency shift.

    你的发射机出现频率漂移。

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  • LEO satellite communication system has the properties of larger power dynamic range, larger and faster changed doppler frequency shift and rapid fluctuation compared to ordinary communication system.

    相对于一般的通信系统而言,低轨卫星通信系统具有信号动态范围大,多普勒频移大且变化速度快,信道起伏剧烈等特点。

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  • The receiver has occurred frequency shift.

    收信机出现频率漂移。

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  • But both of them are sensitive to carrier frequency shift, further, they have comparative BER under AWGN and Doppler shift environment.

    但两者都对载波频率偏移敏感,且在AWGN和多普勒频移环境下表现相当。

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  • Line equalizer control method, and integrating circuit, frequency shift circuit and transmission device.

    线路均衡器控制方法,积分电路,频移电路和传输装置。

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  • So, for the same SNR, edge techniques can improve the measurement accuracy of Brillouin frequency shift greatly comparing with the conventional detection techniques.

    所以,在相同信噪比下,与常规检测技术相比,边缘检测技术可以大大提高布里渊频移测量精度。

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  • Method of calculating the adjusting resistance of frequency shift track circuit for normal state and shunting state is introduced.

    本文介绍了移频轨道电路调整状态及分流状态调整电阻的计算方法。

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  • In this paper, an integrated optical modulator is proposed and analyzed, which is constructed in a fin line geometry and can be applied to a Doppler radar for processing the Doppler frequency shift.

    提出并分析了集成电光波导调制器在多普勒雷达中的一种新的应用方式。该调制器的电极采用鳍线结构,能够方便地获取多普勒频移信号。

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  • There is great Doppler frequency shift under high dynamic circumstances, thus the common GPS receiver cannot work reliably without the help of inertial navigation devices.

    高动态环境存在较大的多普勒频移,这使得普通的GPS接收机在没有惯导辅助的情况下很难可靠工作。

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  • Doppler frequency shift observation of ionospheric high frequency echo is an important method for studying ionospheric disturbances.

    电离层高频反射回波的多普勒频移观测是研究电离层扰动的一个重要方法。

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  • The maximum Doppler frequency shift is an important parameter which affects the performance of the OFDM system.

    在OFDM系统中,影响其性能的一个重要参数就是最大多普勒频移。

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  • A new method for digital identification and demodulation of MPSK signals is presented under the condition of the Doppler frequency shift of channel attenuation.

    针对衰落信道中广泛存在的多普勒频移现象,本文提出了一种MPSK信号数字化识别解调的方法。

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  • It is found that a novel acoustooptic coupled ring resonator can be got for the frequency shift and filtering characteristics of the acoustooptic fiber coupler.

    结果表明利用光纤声光耦合器的移频与滤波特性,可研制成一种全新结构的光纤声光耦合环形谐振腔。

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  • The error of measuring Brillouin frequency shift based on brim detecting technology has great influence on the measurement precision of sea surface temperature.

    采用边缘探测技术测量布里渊频移量的误差会对海表温度测量精度带来很大影响。

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  • The frequency time selective fading resulted from multipath dispersion and Doppler frequency shift is an important characteristic of urban mobile radio channel.

    由多径色散及多普勒频移造成的频率—时间选择性衰落是城市移动无线信道的一个重要特性。

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  • We are giving you the ancient sacred technologies for you to build upon and create the new age of Light; this is what is required for you to reach the next level and frequency shift.

    我们正在给予你古老的神圣技术,来助你筑基于并创造新世纪之光这是你抵达下个层面和转变频率所需要的。

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  • The article analyses the frequency security & stability of signal generator circuit of dispatching equipment of automatic block with frequency shift, and an optimum design scheme is concluded.

    本文对移频自动闭塞发送设备信息源电路的频率安全性及稳定性进行了分析,并总结出最佳设计方案。

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  • Results show that the trapping pulse generates frequency shift.

    研究表明:被俘获的信号脉冲能产生频移。

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  • The results show, the light frequency shift can be effectively reduced in the sharp Angle laser light pumping scheme.

    结果表明斜光抽运方案可以有效降低铯原子束频标中的光频移。

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  • The water sound speed and temperature can be calculated by measuring Brillouin scattering frequency shift.

    借助测量水体布里渊散射的频移,可得到水体声速或温度。

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  • In the communication of multiplex system, the DS signal exists Doppler frequency shift for the high dynamic situation of aerocraft.

    在复合系统通信中,飞行器的高动态使扩频信号存在多普勒频移。

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  • The Doppler frequency shift, the main factor restricting the bandwidth of receiver in inter satellite laser link, with orbit equations is calculated.

    从轨道方程出发,对影响卫星光链路接收机带宽的主要因素———多普勒频移进行了研究。

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  • The theory describes the temporal nonlinear evolution of the field amplitude and frequency shift of a single wave mode.

    从理论上描述了单一受激波的场幅值和频率偏移的非线性变化。

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  • The variations of group velocity dispersion and nonlinear frequency shift with the wave frequency and film thickness are also studied.

    研究了群色散和非线性频移随频率和薄膜厚度的变化规律。

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  • The response model was used to fit the experimental data of frequency shift for these adsorption processes.

    利用压电响应模型拟合了吸附过程中频移响应的实验数据。

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  • In this paper, developed are a method and correspondent software for calculating formation permeability from the center frequency shift and travel time delay in direct Stoneley wave.

    利用多极子阵列声波测井资料提取直达斯通利波、计算斯通利波中心频率偏移和时间延迟来进行地层渗透率反演的方法已被研究了多年。

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  • In this paper, developed are a method and correspondent software for calculating formation permeability from the center frequency shift and travel time delay in direct Stoneley wave.

    利用多极子阵列声波测井资料提取直达斯通利波、计算斯通利波中心频率偏移和时间延迟来进行地层渗透率反演的方法已被研究了多年。

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