• 详细讨论了微分吸收激光雷达测量气体密度中心频率漂移所引起测量误差

    The measurement error of differential absorption laser radar caused by the shift of its center frequency in measuring atmosphenc density has been discussed particularly.

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  • 传统的快速里叶变换(FFT)可以有效地正弦信号进行分析对于分析频率相近正弦信号却存在很大误差

    Traditional FFT can effectively analyze the sinusoidal signal, but the very big error exists for analyzing the similar frequency sinusoidal signal.

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  • 本文从旋转变频控管频率变雷达频率跟踪原理出发分析了产生本振频率跟踪误差主要因素

    The' main factors resulting in local frequency tracking error are analyzed based on the principles of the tracking local oscillator for frequency agile radars of rotary tuning magnetron type.

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  • 通过适当调节两光束的频率调制幅度有效地实现克尔效应误差消除

    Through proper adjustment to frequency modulation amplitude, the Kerr-effect-induced bias can be effectively reduced.

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  • 频率实测值计算进行比较,同时进行误差分析

    Comparisons between the measured value and the calculated value of the frequency are made, and the error analyses are also carried out.

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  • 本文主要研究力矩电流产生频率特性误差分析,同时根据实验结果评价了它的性能

    This paper investigates mainly frequency characteristic and error analysis, evaluates the performances of the torque current generator according to experimental results.

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  • 锁相环计算频率误差更新环路中间变量输出控制信号组成。

    The SPLL consists of calculation frequency error, updating loop middle variable, and output control signal.

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  • 文章介绍了一种用直接数字计数测量瞬时频率原理进行了误差分析。

    This paper proposed the theory of digital counting instantaneous frequency measurement and analyzed the error of frequency measurement.

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  • 结果表明,孔径抖动引起孔径误差随着高速数据采集系统输入信号频率升高而增大由此引起系统信噪比下降。

    The jitter error brought in by the aperture jitter increases as the frequency increase of the input signal in high speed data acquisition systems, thus it degrades the system's SNR.

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  • 水文频率计算由于误差存在,使得估计值实际之间存在偏差,这种偏差导致在水利工程设计中产生了安全因素。

    Due to errors of hydrological frequency calculation, the deviation between the estimated value and actual value causes the design of water conservancy projects to be insecure.

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  • 文中详细地分折了延迟误差脉冲响应频率响应,阐述了模型的统计性质得出了一些新的结果

    In this paper the pulse and frequency responses of the delay error are detailed, and the statistical characteristics of the new model explained, obtaining some new results.

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  • 仪器具有基线漂移提示功能,从而确定仪器背景采集频率可以降低分析误差提高检测结果的准确度

    This instrument can clue on baseline shift to decide the frequency of background scanning, which can deduce NIR analysis error and improve NIR veracity.

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  • 分析了适应望远镜系统的波面补偿剩余误差频率响应关系

    The relationship between residual wavefront phase error and frequency response in an adaptive optical telescope is analyzed.

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  • 加工质量石英音叉需要解决工艺误差导致的机械耦合误差频率漂移等问题

    To get high quality quartz tuning forks, mechanical coupling error and frequency excursion by machining errors must be resolved.

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  • 控制频率相位偏移误差均达到了10 - 5,稳定度达到了0.05%。

    When error of the frequency and phase shift is 10-5, its stability is 0.05%.

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  • 方法能够降低不同频率校正量误差影响尤其减少高频成分损失提高资料分辨率好的效果

    The method can reduce influence of errors existing in statics for different frequency, especially reduce the loss of high-frequency components, so that has a good result in improving data resolution.

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  • 得到系统不同输入转矩波动、齿侧间隙、齿轮综合误差激励频率阻尼比参数系统全局特性

    The system's global characters are obtained under different input torque fluctuation, backlash, composite transmission error, exciting frequency and damping ratio.

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  • 而且不像雇用铁谐振变压器稳压器的AR -PRO敏感线频率误差非常适合搭配发电机使用

    And unlike voltage regulators that employ ferro-resonant transformers, the AR-PRO is not sensitive to small errors in line frequency, making it ideal for use with generators.

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  • 循环频率存在误差时,上述算法性能急剧下降。

    But all the algorithms' performance will severely degrade when CFE (cyclic frequency error) exists.

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  • 基于测量数据修正,模态频率误差在3%以内。

    When experimental data is used, error of modal frequencies is less than 3%.

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  • OFDM系统自身正交载波调制特点决定定时误差载波频率偏差十分敏感

    The orthogonal multicarrier modulation, which is the main character of OFDM, determines that it is very sensitive to both timing synchronization error and carrier frequency offset.

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  • 分析传递函数FOG模型误差,得出数字闭环FOG频率特性计算方法

    Frequency characteristics calculation of the digital closed loop FOG was conducted based on error analysis between the transfer function and the model.

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  • 这样使误差理论上含有标准频率误差,可以使测量误差降低

    By doing so, there will only be standard frequency error in theory and decrease the measuring error greatly.

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  • 提出一种基于虚拟仪器精确测量TD - SCDMA信号频率误差方法,并给出了系统设计。

    A method of measuring TD-SCDMA signal frequency error based on virtual instrument is proposed.

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  • 因此工程计算不计相干函数随频率变化不会带来太大的误差

    So, in engineering computation it is acceptable to neglect the directional variation of coherence value with frequency.

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  • 但是,单靠中国余数定理无法解决距离测量频率测量中的误差遮挡问题。

    But the Chinese Remainder Theorem cannot solve the error and the blind region made in range and doppler velocity measurements.

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  • 引入了误差放大器频率补偿方法,并着重分析了零点、双极点的补偿电路

    Then the methods of how to compensate the error amplifier is introduced, a double-zero, double-pole construction is analyzed individually.

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  • 方法包括信号频率实时估计采样频率同步跟踪谐波系数误差校正几个要素。

    The method consists of real-time estimation of signal frequency, synchronous tracking of sampling frequency and error correction of harmonic coefficients.

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  • 扩频装置时序检测装置,信道估计装置频率误差测量方法

    Reverse-spread spectrum device, time sequence inspection device, channel evaluation device and method for measuring frequency faults.

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  • 扩频装置时序检测装置,信道估计装置频率误差测量方法

    Reverse-spread spectrum device, time sequence inspection device, channel evaluation device and method for measuring frequency faults.

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