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METHOD FOR DETERMINING AUTOCORRELATION function of the electric signal by its power spectral density
METHOD FOR DETERMINING AUTOCORRELATION function of the electric signal by its power spectral density
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机译:通过功率谱密度确定电信号自相关函数的方法
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摘要
FIELD: electricity.;SUBSTANCE: invention is related to methods for determining of an electric signal autocorrelation function. The controlled temporary variable interval of the autocorrelation function that includes the autocorrelation function is broken into minor resolution elements, numbers from -K up to K are assigned to the resolution elements, where K is a number of the resolution elements at positive and negative sections of the temporary variable axis, for each resolution element a weight function wk(ω)=θe-jωkθ is formed, where k is the number of a resolution element, ω is circular frequency, j is a complex unit, the fixed setting is made for frequencies convenient for measurement of power spectral density, a weight matrix W is formed from weight functions at the preset frequency setting, values of power spectral density are the measures at these frequencies and united into the vector of measurements , equation of measurements is set up, where is a vector of correlations, ρ(kθ) is a value of the autocorrelation function for the analysed signal at the resolution element under the number k, is a vector of errors for the spectral density measurements, the autocorrelation function is defined as per the equation of measurements in the form of an assessment for the vector of correlations.;EFFECT: expansion of the class of analysed signals into high frequency and composite signals with rapid changing spectral density as well as elimination of the autocorrelation frequency distortion due to the limited band of the analysed frequencies of the instrument measuring power spectral density.
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机译:用于确定电信号自相关函数的方法技术领域本发明涉及用于确定电信号自相关函数的方法。包含自相关函数的自相关函数的受控临时变量间隔被分解为较小的分辨率元素,从-K到K的数字分配给了分辨率元素,其中K是位于正负部分的分辨率元素的数量临时变量轴,对于每个分辨率元素,形成一个权重函数w k Sub>(ω)=θe-jωkθ Sup>,其中k是分辨率元素的数量,ω为圆形频率,j是一个复数单位,固定设置用于方便测量功率谱密度的频率,权重矩阵W是在预设频率设置下由权函数形成的,功率谱密度的值是这些频率下的度量并合并为测量向量展开▼