另外在加速器物理实验以及在研究各种束流不稳定性的机器研究过程中，都需要频谱测量和频谱分析。
In addition, it required to measure and analyze the beam spectrum while the experiments of accelerator physics and study on the beam instability are made.
因为测量的引发是由脉冲的前导沿控制的，除非设置一定的预触发延迟，否则会丢失部分脉冲、造成频谱失真。
Since the measurement initiation is controlled by the leading slope of the pulse, part of the pulse is lost and the resulting spectrum is distorted unless some pretrigger delay is specified.
FFT是谐波测量中使用最广的方法之一，但利用其进行测量时存在着频谱泄漏，影响测量结果准确性。
Although FFT is the efficient approach in harmonic measurement fields, it results in spectral leakage, which affects the accuracy of measurement.
文章首次利用太赫兹时域光谱技术测量了一氧化碳气体在0．2～2．5太赫兹频谱范围内的吸收光谱。
This paper presents the absorption spectra of carbon monoxide measured by terahertz time-domain spectroscopy in the frequency range between 0. 2 and 2. 5 THz.
内置频谱分析仪，模拟测量函数，和功率计。
Built-in spectrum analyzer, analog measurement functions, and power meter.
数值模拟结果表明，内导体的设计参数在一定程度上影响测量结果的准确性，但阻抗的频谱特性是真实的。
The simulation results show that the inner conductor design will effect the accuracy of measurement result of impedance, but the spectrum properties of impedance is reasonable.
采用去均值和频谱校正的方法，改善了系统的测量精度。
Through removing mean and frequency spectrum correction, the measurement precision of system is improved.
本文叙述了用频谱分析仪测量相位噪声的方法，步骤和应注意的问题。
This paper describes some methods, steps and attentions using a spectrum analyzer in phase noise measurement.
回顾了实验室中超声波测量Q值的四种常用方法：上升时间法、回声法、频谱振比法和波形反演法。
The four common ultrasonic methods for measuring Q value in the laboratory, rise time, pulse echo, spectral ration and waveform inversion techniques are reviewed.
方法是根据有关卫生标准及检测方法对生产设备、休息室、控制室等作业场所进行声强和频谱的测量。
Methods the sound level and frequency were measured according to the corresponding health criterion and measuring method at big production equipment, crush room, control room and workshop.
最后，讨论了频谱仪本地噪声对低电平信号测量影响的修正方法。
At last, correction method of low level signal measurement is discussed duo to effect of spectrum analyzer floor noise.
仿真结果表明该算法使频谱泄漏大大小于未同步化方法，具有良好性能、计算量小、适合于实时测量应用的特点。
By the computer simulation and the synchronization algorithm calculation, the result of DFT analysis show that the new algorithm is capable for reducing the leakage.
对于研发工作，频谱仪是不可缺少的，但对于生产测试，其测量能力远远超出了需要，造价也更高。
For development work, a spectrum analyzer is indispensable. But for production testing, it offers more measurement power (and expense) than needed.
本文介绍利用频谱分析仪测量信号相位噪声的方法。
A method of how to measure the signal 's phase noise by spectrum analyzer is introduced.
导出了频谱仪测量低信噪比时的误差修正公式，并用实验结果验证了理论计算的正确性。
Error correct formulae of low signal to noise ratios measurement are derived on a spectrum analyzer, the experiment results are reported to verify the correctness of theory calculation.
本文给出了埋入式进气道内湍流流场的雷诺应力测量和频谱分析结果。
The results of the measurement of Reynolds stresses and spectral analysis for a turbulent flow in a submerged air intake are presented in this paper.
通过对6480型驱动桥的噪声功率、表面声强、表面声压、表面振动加速度以及相应的时频谱进行了全面、系统的测量和分析。
The noise power, sound intensity, sound pressure, vibration acceleration and corresponding time-frequency spectrum of 6480 driver axle surface were measured and analysed.
在测量精度要求较高的场合，直接利用FFT频谱估计显然无法达到精度要求。
It's apparently difficult to meet the requirement of accuracy by using of FFT directly.
根据相位噪声的定义，给出频谱分析仪相关测量参数的换算关系，进而得到计算方法。
The conversion relation of some spectrum analyzer's correlative measuring parameters from the definition of the phase noise is given, then the method to calculate the phase noise is gained.
患者的甲状腺段颈总动脉测量频谱参数及验血指标。
Spectral parameters of common carotid artery and indexes of blood test at thyroid.
为提高频率测量精确度，提出一种自动调整采样参数与频谱校正相结合的频率测量算法。
For improving the precision of the frequency measure, presents a frequency measure algorithm by integrating automatic adjusting the sampling parameter and spectrum correction.
简要介绍了基于频谱分析的汽轮机叶片自振频率测量系统的组成和工作原理。
In this paper, a natural frequency-measuring device for turbine blade is developed, and its constructing and working principles based on spectrum analysis are presented.
利用频谱相除技术构建了延迟时间测量的信号模型，研究了频谱相除后信号的幅频特性。
The spectrum division technique was used for establishing signal model of delay time measurement, and amplitude frequency characteristics of the signal after spectrum division was investigated.
针对测量雷达要实时准确获得目标速度、加速度测量值的问题，提出了一种基于频谱细化的参数估计方法。
To estimate the parameter of velocity and acceleration with high accuracy and in real time for the measurement radar, an improved method based on spectrum zooming is proposed.
我们对它的声场和频谱作了详细的实验测量，由于采用外差分析技术，冲击噪声的离散谱和宽带谱可同时记录。
Sound field and spectra thereof were investigated experimentally by utilizing the heterodyne analysis technique, so that both the screech and the wide-band noise can be recorded and studied.
分析表明，可以通过对其共振频谱的测量而判定桩的断裂情况。
As it is shown in this paper the breaking state of a concrete pile can be judged by measuring its "resonant frequency spectrum".
传统的工频耐压试验是通过电压表，电流表，功率分析仪，频谱分析仪等等来分别测量波形及其各个参数的。
The traditional measure method of the power withstand test is to use the voltage meter, ammeter, power analyzer, frequency analyzer etc to measure the waveform and parameters of the power signals.
传统的工频耐压试验是通过电压表，电流表，功率分析仪，频谱分析仪等等来分别测量波形及其各个参数的。
The traditional measure method of the power withstand test is to use the voltage meter, ammeter, power analyzer, frequency analyzer etc to measure the waveform and parameters of the power signals.
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