最大熵与互功率谱相位法就是首先求出组分波的波至点。
The arrival of components must been picked for the method of maximum entropy and cross power spectrum phase.
这是在互功率矩阵产生之前并且存在磁盘上做平均的时间段的数目。
This is the number of time segments which are averaged before a cross power matrix is produced and stored on disk.
但以往的谱估计都是采用互功率谱估计和高阶自谱估计的各种方法。
Spectral estimation always applies cross spectral theory and high order self spectral theory up to now.
详细推导了多自由度结构多测点加速度响应的互功率谱模态矩阵展开式。
The modal matrix expansion of the cross power spectra of the multi-measurement acceleration response in the multi-DOF structure is derived in detail.
该算法基于互功率谱估计,具有算法复杂度低、精确度高、适用频率范围广等优点。
Based on the cross-power spectrum estimation, the algorithm has the advantages of lower complexity and better precision over wide frequency band.
结果表明,利用等工件转角间隔采样通过互功率谱密度方法可以实现相位差的精确在线测试。
The results show that the phase shift angle can be measured accurately based on the cross-spectrum method with equivalent interval sampling of workpiece rotary angles.
利用互功率谱方法对异步电动机发生多根导条断裂故障进行了模拟仿真,包括连续断条和间歇断条故障。
In this paper, the method of cross power spectrum is used to simulate rotor bars breaking faults of induction motor, including continuous breaking and intermittent breaking of rotor bars.
实验表明这种改进的互功率谱比值法与传统的自功率谱比值法的方法相比,动作模式识别率得到了提高。
The result of experimentation shows that its recognition of movement was much better than the method using traditional Power Spectrum Coefficient.
最后给出基于建立信号模型和互功率谱相位的时延估计方法。该方法对噪声和混响均具有很强的鲁棒性。
A time delay estimation method based on onset signal and CSP is proposed, it's robust to noise and reverberation.
麦克风间距的限制是互功率谱加权声源测向方法最大的问题,声源测向精度、角度分辨率与麦克风间距成反比。
The method used in the literature greatly limit the distance between the microphone-array, and the precision of direction finding is related to the distance of the microphone-array.
该文提出了一种用互功率谱求振型的方法,并对此理论进行了详细推导,以一悬臂梁为例对该方法进行了试验验证。
This paper gives a theoretical formulation for the extraction of mode shape by fitting the cross power spectra of the outputs and a cantilever beam is analysed.
同时指出,如需按CQC方法进行精细计算,就必须首先获得结构各点风荷载之间互功率谱密度函数的实部和虚部。
It is also pointed out that, only after both real part (or co-spectrum) and imaginary part (or quadrature spectrum) of cross spectra between random wind loads of an…
杨元喜还对“GNSS互操作性的定量评估”表示赞同,并指出,对于多系统接收机而言,普遍的最大/最小接收功率电平可以改善信噪比环境。
Yang argued for a “quantitative evaluation of GNSS interoperability, ” noting that common maximum/minimum received power levels can improve the signal-to-noise environment for multisystem receivers.
最近的一系列的实验研究表明,在大功率微波器件中填充等离子体可以大大增强其电子束与波的互作用效率,提高功率输出的水平;
Recently, much attention has been made on the study of plasma-filled high-power microwave devices for the enhancement of efficiency and output power.
文中求得了相应的电子群聚、注一波互作用功率及增益的表达式,并进行了讨论。
We also derive out some useful expressions, such as electron bunching, beam-wave interaction power and gain, and carry out some discussions.
近年来实验研究发现,等离子体加载高功率微波器件后,器件的输出功率和互作用效率得到显著的提高。
In recent years, experiments show that in the plasma loaded high power microwave device may obtain much higher interaction efficiency and output power than the ones absence of plasma.
近年来研究发现,当在微波器件中填充了等离子体后,器件的输出功率和互作用效率得到显著提高,同时等离子体还可改善电子注的传输质量。
It is researched and discovered that filling plasma into microwave instrument may increase it's output power and interaction efficiency and improve transmission quantity of electronic beam.
推出了电子注与波的互作用功率、频偏和起振电流等公式,并进行了详细的讨论和分析。
And the formulas of electron beam to wave interaction power, frequency shift, starting current and etc. are derived. Then some discussions and analyses are carried out in detail.
该式说明在弱声光互作用条件下,衍射导光波强度与超声功率成正比。
The formula indicates that under condition of weak AO interaction the intensity of diffractive guided optic wave is proportional to ultrasonic power.
该式说明在弱声光互作用条件下,衍射导光波强度与超声功率成正比。
The formula indicates that under condition of weak AO interaction the intensity of diffractive guided optic wave is proportional to ultrasonic power.
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