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 data of suppressing the free torsion oscillation. (b) The solid curve is the corresponding PSD of the filtered data, and the dashed line is fitting to Eq. (4).