In not-so-rare unfortunate cases, the bias results in a negative phase-noise spectrum, which is an obvious nonsense. Similar results are observed separately in three labs with instruments from the two major brands. We provide experimental evidence, full theory and suggestions to mitigate the ...
1) cross-power spectrum phase 互谱相位 2) cross-power spectrum 互谱 1. The grosser the bone fracture,the lower the peak frequency ofcross-power spectrum. 离体模拟和在体实测结果表明 :骨折后 ,胫骨在两测点振动的加速度互谱主频减小 ,骨折愈严重 ,加速度互谱主频越低。
Implementation of a Cross-Spectrum FFT Analyzer for a Phase-Noise Test System in a Low-Cost FPGA. Implementation of a cross-spectrum FFT analyzer for a phase-noise test system in a low-cost FGPA. Int J Microwave Sci & Tech. 2015;:1-8. https:/... Fleischmann,Patrick,Mathis,... - ...
At 100 Hz and 200 Hz, the phase lags estimated from the cross spectrum are close to the true values. Get [Pxy,F] = cpsd(x,y,hamming(100),80,100,Fs); Pxy(Cxy < 0.2) = 0; plot(F,angle(Pxy)/pi) title("Cross Spectrum Phase") xlabel("Frequency (Hz)") ylabel("Lag (\...
Rhythmic firing was defined quantitatively: the autospectrum's peak power had to exceed 1.75 times its asymptote. This formula was obtained by generalizing from a natural cut-off in the theoretical autospectrum for serially uncorrelated, gamma-distributed intervals, whose firing can be varied from ...
4) cross-power spectrum 互功率谱 1. Based on thecross-power spectrumestimation,the algorithm has the advantages of lower complexity and better precision over wide frequency band. 该算法基于互功率谱估计,具有算法复杂度低、精确度高、适用频率范围广等优点。
The phase used is the phase of the cross spectrum of the observations filtered through their minimumphase equivalent filters. We provide an analytical study of the propagation of noise effects in the phase estimate. Comparisons with existing methods indicate that the proposed one is robust to noise...
General formulas for the cross spectrum, the cross-phase spectrum, and the time-delay spectrum for QPO shot models are calculated and discussed. It is shown that the CCFs, cross spectra, and power spectra observed for Cyg X-e2 imply that the spectrum of the shots evolves with time, with ...
色散平坦渐减光纤交叉相位调制The effect of cross phase modulation (XPM) on pulse propagation and supercontinuum (SC) spectrum generation in a dispersion flattened and decreasing fiber is researched. The results indicated that XPM could enhance the SC spectrum generation and increase the generation ...
evaluated against six coupling strength values, covering a wide range of carrier frequencies to examine a broad spectrum of scenarios. The findings demonstrate that the bispectral method outperforms bivariate Granger causality, particularly in identifying specific QPC under conditions of very weak couplings...