但它的一个缺点就是，激光功率从零升到最大值的过程，会使粒子或X射线束具有一定的能谱分布。
One shortcoming of these beams is that they typically have a range of energy, caused by the gradual rise of laser power from zero to its maximum level.
然而，目前基于功率谱均衡的数字式随机振动控制系统只能产生高斯分布的随机振动激励信号。
However, the digital random vibration control systems currently based on power spectrum fitting can only generate random vibration exciting signals with Gaussian probability distribution.
若上述正实条件仅在某些频带上满足，则FXLMS算法的收敛将依赖于参考信号功率谱密度的分布。
But if above positive real condition is satisfied only within some frequency range, the convergence of FXLMS algorithm is dependent on the spreading of power spectral density of the reference signal.
随后以大擦地角的回波信号为例，简要分析了杂波模型的幅度分布、功率谱和参数的特性。
The amplitude distribution, power spectrum and parameters are discussed briefly based on the return at a high grazing angle.
对地面雷达地杂波建模方法进行了深入研究，给出了地杂波功率谱模型，分析了地杂波幅度概念分布特性。
Land clutter's power spectral model is presented, and the characters of the probability distribution of land clutter's amplitude are also analyzed.
超宽带(uwb)信号及其功率谱分布是研究超宽带通信系统与其它通信系统频谱共存与兼容问题时，需要考虑的重要因素。
UWB signals and their power spectrum mask are important factors which need to be considered when studying the spectrum coexisting and compatible problems between UWB systems and other radio systems.
得出了该路周期性信元流的排队时延分布、时延抖动的自相关函数和功率谱。
The probability mass function of queueing delay, the autocorrelation and power spectrum of delay jitter for this periodic cell stream are derived.
性能测 试结果表明：混沌噪声产生器能够产生具有任意分布和平坦功率谱的混沌噪声，且随机性较好。
The results of performance test show that the generator can generate chaotic noise with arbitrary distribution, flat power spectrum and good randomicity.
第三，本文深入分析了功率谱为高斯谱、幅度分别服从上述四种分布的杂波模型。
Third, this paper analyse clutter models which submit Gauss power spectrum and forenamed four amplitude distributions.
通过对背景误差方差、特征长度的调整，显著改善了背景误差功率谱的分布特点，使得NMC方法结果与更新矢量方法结果更为吻合。
After the tuning of background error variance and de-correlation length, results from the NMC-method are closer to those of the innovation vector method, and the analysis results are improved.
从雷达杂波的分布特性出发，分析了杂波的解析模型，阐述了雷达杂波幅度的概率密度分布及其功率谱密度分布。
Based on radar clutter distribution, the radar clutter model is analysed for amplitude probability density distribution and power spectrum density distribution.
文中提出了一种采用相干脉冲雷达的杂波功率谱模型并结合SIRP法产生相干k分布海杂波的方法，对以往的模拟方法作了改进。
The simulation model of coherent correlation K-distributed clutter using SIRP, with the modeling of coherent pulsed radar clutter, is presented in this paper and simulated on computer.
提出了用激光衍射功率谱方法测量柱形颗粒群直径分布的技术方法。
A new approach to measure the long cylindrical particle by using the laser diffraction power spectrum method is presented in this paper in detail.
通过分析皮托管动压信号的方式，提出了一种基于功率谱密度分布的调节阀扰动信号分析新方法。
A novel method was proposed based on the total pressure of pitot tube and power spectral density.
通过分析皮托管动压信号的方式，提出了一种基于功率谱密度分布的调节阀扰动信号分析新方法。
A novel method was proposed based on the total pressure of pitot tube and power spectral density.
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