Data point selection for weighted least square fitting of cavity decay time constant

He Xing^{1, 2, 3}, Yan Hu^{1, 2, 3}, Dong Li-Zhi^{1, 2}, Yang Ping^{1, 2}, Xu Bing^{1, 2, †,}

Comparisons between derivations and simulations of expected precision and accuracy. Whenb= 0.2 mV (corresponding toK= 375), the precision of the WLS-DS method is better than that of the NLSF method with 5000 data points (the solid black line in Fig.1) which are calculated according to the derivation of Ref. [12].