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fourth power中文是什么意思

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用"fourth power"造句"fourth power"怎么读"fourth power" in a sentence"fourth power"的同义词

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  • 四次方

例句与用法

  • We can raise any number to the fourth power by squaring it twice .
    我们能把任一数平方两次就得到它的四次方。
  • On the fourth power mean of the general quadratic gauss sums
    高斯公式和斯托克斯公式
  • On the fourth power mean value of a number theoretic function
    一个数论函数的四次均值
  • On the general k - th gauss sums and their fourth power mean
    和及其四次均值
  • On the fourth power mean of the general fourth gauss sum
    关于广义四次高斯和的四次均值公式
  • Would be calculated as 5 to the fourth power , which would result in 625
    将按“ ( 5的四次幂) ”进行计算,得到的结果为625 。
  • Where r is some constant which can be fiddled with . the important thing is that the cooling follows the fourth power law
    是一个我们可以调整的常数。最重要的是冷却要遵循四次方法则。
  • The axial forces are related to oil supply pressure , and also to the square of rotary speed and the fourth power of effective diameter of circular circle
    轴向力除了与供油压力有关外,主要是与泵轮转速的二次方和循环圆有效直径的四次方有关。
  • The potential applications of amr include both civil and military communication , especially non - cooperative communications and communication confrontation , such as identifying signals , supervising signals , distinguishing interference , electronic confrontation , analyzing military threat , etc . on the basis of our analysis to the existing research on feature abstraction , the related feature abstraction methods are optimized in this paper , resulting several effective methods such as the feature abstraction based on transformation domain , stepped voltage level analysis , normalized carrier - free spectral energy analysis , squared signal and fourth powered signal analysis , etc . both the decision theory based on recognition algorithms and the artificial neural network ( ann ) based on recognition algorithms is analyzed , and the former is selected as it is more appropriate for this research
    调制类型的自动识别广泛应用于民用通信与军用通信,尤其是对于非合作性通信、通信对抗,比如:信号确认、信号监控、干扰辨识、电子对抗、软件无线电、电子救援、通信对抗、军事威胁分析等。本论文在分析现有研究的基础上,借鉴了已有的特征提取方法,对相关调制类型特征提取方法进行了优化,使用了一些有效的方法,如基于变换域特征提取方法、梯层电平分析方法、剔除载波后的归一化频域能量分析方法、信号平方后的频谱分析方法、信号四次方后的频谱分析方法等。通过对基于决策理论和基于人工神经网络两种识别算法进行分析,本论文选择了较适合的基于决策理论的识别算法。
  • Secondly , the paper researches blind estimation of signals parameters , including the carrier frequency , signal to noise ratio and symbol rate of digital modulations . thirdly , with the combination of parameters from early studies on the decision theory , a set of robust feature parameters are extracted from signal power spectrum and the power spectrum of the second and fourth power of signal . based on these parameters , the proposed scheme is able to recognize 12 types of common used modulations , namely ask 、 2fsk 、 msk 、 4fsk 、 psk 、 qpsk 、 / 4qpsk 、 8psk 、 am 、 dsb 、 ssb 、 fm
    接着,对信号功率谱、平方谱及四次方谱进行研究,针对通信中常用的调制方式,结合前人提出的基于决策理论中的特征参数,设计了一组对信噪比和信号调制参数不敏感的分类特征参数,利用上述参数完成了一种基于信号频域的识别方法,可以对ask 、 2fsk 、 msk 、 4fsk 、 psk 、 qpsk 、 / 4qpsk 、 8psk 、 am 、 dsb 、 ssb和fm这12种常用调制方式进行识别。
用"fourth power"造句  

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