首页>
外国专利>
Determination of Statistical Error Bounds and Uncertainty Measures for Estimates of Noise Power Spectral Density
Determination of Statistical Error Bounds and Uncertainty Measures for Estimates of Noise Power Spectral Density
展开▼
机译:统计误差界限的确定和噪声功率谱密度估计的不确定度
展开▼
页面导航
摘要
著录项
相似文献
摘要
Systems/methods for computing a power spectral density estimate for a noise signal. Where the noise signal appears in two channels (a single channel), n successive data acquisitions from the two channels (the single channel) are used to compute n respective cross (power) spectral densities, which are then averaged. The averaged cross (power) spectral density may then be smoothed in the spectral domain. The magnitude of the smoothed cross (power) spectral density comprises an estimate for the noise power spectral density. An effective number of independent averages may be computed based on the number n, the time-domain window applied to the acquired sample sets, the amount of overlap between successive sample sets, and the shape of the frequency-domain smoothing function. A statistical error bound (or uncertainty measure) may be determined for the power spectral density estimate based on the effective number of averages and the averaged single-channel and cross-channel spectral estimates.
展开▼