“Results: We find that the 12th-order polynomial fit to the spectral passband utilised in the published study leads to spurious results. Following their recipe, five other >10 sigma lines can be produced in absorption or emission within 60 km/s from the PH3 1-0 transition frequency by suppressing the surrounding noise. Our independent analysis shows a feature near the PH3 frequency at a ~2 sigma level, below the common threshold for statistical significance. Since the spectral data have a non-Gaussian distribution, we consider a feature at such level as statistically unreliable that cannot be linked to a false positive probability.
Conclusions: We find that the published 267-GHz ALMA data provide no statistical evidence for phosphine in the atmosphere of Venus.”
gaussian noise 在 加性高斯白雜訊- 維基百科 的相關結果
加性高斯白雜訊（英語：Additive white Gaussian noise，AWGN）在通訊領域中指的是一種功率譜函數是常數（即白雜訊），且振幅服從高斯分布的雜訊訊號。 ... <看更多>