Ordones Sotero, Servin Manuel, Padilla Moises, Muñoz Antonio, Flores Jorge L, Choque Ivan
Opt Lett. 2019 May 1;44(9):2358-2361. doi: 10.1364/OL.44.002358.
We introduce the frequency transfer function (FTF) formalism for generalized least squares phase-shifting algorithms (GLS-PSAs), whose phase shifts are nonuniformly spaced. The GLS-PSA's impulsive response is found by computing the Moore-Penrose pseudoinverse. FTF theory allows analyzing these GLS-PSAs spectrally, as well as easily finding figures of merit such as signal-to-noise ratio (SNR) and harmonic rejection capabilities. We show simulations depicting that the SNR slightly decreases as the harmonic rejection robustness improves.
我们介绍了用于广义最小二乘相移算法（GLS-PSAs）的频率传递函数（FTF）形式，该算法的相移是非均匀分布的。通过计算摩尔-彭罗斯伪逆来找到GLS-PSA的脉冲响应。FTF理论允许对这些GLS-PSAs进行频谱分析，并轻松找到诸如信噪比（SNR）和谐波抑制能力等品质因数。我们展示的仿真表明，随着谐波抑制鲁棒性的提高，SNR会略有下降。
