功率谱密度的英文

• power spectral density (psd)
• psd ( power spectral density )
• psd power spectral density
• psd，power spectrum density
• spectral density

• 功率谱    power spectrum
• 密度    density; thickness
• 互功率谱密度    cross-spectral density
• 自功率谱密度    auto-spectral density
• 功率谱密度函数    power spectral density function; power spectrum density function
• 瞬间功率谱密度    instantaneous power spectral density
• 速度功率谱密度    velocity power spectral density
• 噪声功率谱密度    noise power spectral density
• 噪音功率谱密度    noise-power spectral density
• 功率谱密    power spectral density; power spectrum
• 相位噪声功率谱密度    phase noise power spectrum density
• 功率频谱密度电平    power spectral density level
• 功率频谱密度分析    power spectral density analysis
• 功率频谱密度函数    power spectral density function
• 功率通量谱密度    spectral power flux density
• 噪声功率频谱密度    noise spectral power density
• 最大功率频谱密度    maximum spectral power density
• 谱密度    ectral de ity; spectral density; spectraldensity; spectrum density
• 层面功率谱    bedding-plane power ectrum; bedding-plane power spectrum
• 二维功率谱    two-dimensional power spectrum
• 功率谱的    power-spectral
• 功率谱分析    power spectral analysis; power spectrumanalysis
• 功率谱估计    power spectrum estimate; power spectrum estimation
• 功率谱显示    power spectra display; powspec
• 功率谱阵    power spectrum array

• Additionally , since direct spread spectrum sequence ( dsss ) signal has an ultra - low power spectrum density , finding approaches to detect it and estimate its parameters in the non - cooperative communication system is a great challenge for applications
  另外, dsss信号由于具有极低的功率谱密度,如何在非协作通信中不知道扩频序列的前提下对其进行检测和估计,是一个具有很强应用背景的课题。
• The direct sequence spread spectrum ( dsss ) signal has been widely used in these years for its advantage of anti - jamming capability , good confidentiality and low power spectrum density . it has wide usage in mobile communications , radar , navigation and orientation
  直接序列扩频( dsss )信号具有抗干扰性能好、保密性能好、功率谱密度小等特点,近年来得到了迅速的发展,并被广泛应用于移动通信、雷达、导航和测量等多种领域。
• The thought that sampling frequency in targets measure system confirm as 3 is studied for the first time . it is proved from three aspects : the frequency spectrum of track , the error requirement of project and the rate of maximum number of allowable lost points in project
  本文首次就目标坐标测定仪中采样频率确定为3hz的思想进行了研究，并分别从目标航路功率谱密度、实际工程中误差要求和允许的最大漏测点概率等三方面加以论证。
• The measurement was made on a gas - solid fluidized bed in our laboratory . the pressure fluctuation signals were obtained and analyzed through power spectrum density . the relation of the particle size to pressure fluctuation and other parameters was studied by using fuzzy set theory
  在实验室条件下对气-固流化床的颗粒进行了测量，通过功率谱密度对所获得的压力波动进行了分析，并应用模糊集理论对颗粒尺寸与压力波动及其它影响参数的关系进行了研究。
• With the nonlinearity of vehicle suspension , simulation signal of suspension system is more practical by road exciting signal of time domain than frequency domain , furthermore , it is easy to get the results which are consistent with practical results
  考虑到车辆的非线性因素，在进行主动控制分析过程中，悬架系统激励信号采用时域信号。因此，首先进行了时域路面随机不平度生成方法的研究，所得路面模型的功率谱密度与理论路面功率谱密度吻合较好。
• To solve it , the differential equation set is transformed by fourier transform and the dynamic differential equation in the form of matrix is educed . the calculation formulas of frequency response function of vehicle vibrating system , acceleration power spectrum density function are put forward
  用分析力学法建立整车动力学模型，推导出以矩阵形式表示的运动微分方程，并通过傅氏变换给出汽车动力学系统的频率响应函数、加速度功率谱密度函数的计算公式。
• The response curve of rear left hydraulic mount , rear right hydraulic mount , and the fore rubber mount in each conditions are draught . the curve of hydraulic mount system ' s transmissibility is also calculated in the end and the performance of vibration isolation is analyzed . 5
  绘制了在时域和频域上的动力总成的加速度运动响应，质心的角加速度运动响应以及后左，后右液压悬置，前橡胶悬置的动反力曲线，以及怠速，高速工况下各悬置的加速度功率谱密度曲线。
• Abstract : to against the fact of the commercial available white noise generators are very expensive which is not good for general operations , a simple and effective limited band white noise generator is design . the generator is using the feature of dual polarity transistor , i . e . , the power spectrurn density of particulate noise is not related to frequency in very wide band and close to white noise . the concrete circuit is also given
  文摘:针对市售白噪声发生器价格昂贵，不利于一般场合使用的问题，介绍利用双极性晶体管散粒噪声功率谱密度在非常宽的范围内与频率无关，属白噪声这一特性，设计了一种简捷、有效的限带白噪声发生器，并给出了具体电路。
• Spread spectrum technique , which can handle variable adverse environments , exhibits unique qualities that have a number of advantages in anti - jamming , anti - noise , reduction of multi - path interference , low power spectral density , privacy , selective addressing and code division multiplexing
  扩频通信技术具有优越的抗干扰、抗噪音、抗多径衰落性能，能在低功率谱密度下工作，具保密性、可多址复用和任意选址，能有效克服各种恶劣的信道特性，目前广泛应用于移动通信、雷达、导航、测距、电力线通信等领域。
• A cyclic radial shearing interferometer was used to diagnose the wavefront distortion of a laser system and an lcslm ( liquid crysnd spatial ligh modulator ) was used to control it . some results have been summarized as follows : l . according to the theory of scalar quanity diffeaction and the model of the random gaussian phase screen of low frequency wavefront , the effect of the low frequency wavefront with different rms gradient on the focal spot of a laser beam was studied
  本论文在激光光束波前畸变检测和控制上进行了新的探索，主要就空间相位调制环路径向剪切干涉仪以及它对波前畸变的检测和液晶空间光调制器及其对中频段波前畸变的控制进行了研究，其研究的内容和取得的成果如下：一、根据标量衍射理论，结合低频波前畸变的高斯随机位相分布模型，研究了不同均方根梯度低频畸变波前对激光光束焦斑聚焦性的影响，并采用描述中频段波前畸变的功率谱密度概念，模拟计算了它对激光焦斑旁瓣的贡献。

• 功率谱密度的日语：パワースペクトル密度 パワースペクトルみつど