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spectral density

美 /ˈspektrəl ˈdensəti/
  • 谱密度：在信号处理和统计学中，指定频率范围内信号功率的分布密度。

双语例句

  1. The concept of "equivalent noisy power spectral density" is introduced in this paper.
    文中提出等效噪声功率谱密度的概念。
  2. Flicker noise is approximately simulated by power law model of phase noise spectral density.
    根据相位噪声功率谱的幂律模型，近似地模拟了相位噪声。
  3. The methods of computation and realization of signal power spectral density are mainly discussed.
    文中主要描述了信号功率谱的计算和实现方法。

网络短语

  • power spectral density
    功率谱密度；谱密度；功率谱密
  • mean squared spectral density
    均方谱密度
  • Auto-spectral Density
    自功率谱密度
  • spectral density function
    频谱密度函数
  • RMS Spectral Density
    均方根谱密度

英英释义

  • In statistical signal processing, statistics, and physics, the spectrum of a time-series or signal is a positive real function of a frequency variable associated with a stationary stochastic process, or a deterministic function of time, which has dimensions of power per hertz (Hz), or energy per hertz. Intuitively, the spectrum decomposes the content of a stochastic process into different frequencies present in that process, and helps identify periodicities.