Optimal estimation of the amplitude of signal with known frequency in the presence of thermal noise
Luo Jie1, Ke Jun1, Liu Yi-Chuan1, Zhang Xiang-Li1, Yin Wei-Ming1, Shao Cheng-Gang2, †
       

(a) The raw data of determining the amplitude of the gravitational calibration signal. (b) The solid curve is the corresponding PSD of the raw data, and the dashed line is using the mean-square spectral density of the thermal fluctuation Eq. (4). The data are collected continuously from 17 November 2014 to 18 November 2014.