The methods of calculating correctly of original phase angle of fundamental component using FT have also been presented in this paper.
本文还对如何利用傅氏算法来求取正确的基波或某次谐波初相角方法进行了研究。
参考来源 - 距离保护中若干问题的研究This method is based on the fast fourier transform (FFT). The fluorescence lifetime is obtained from the tangent function of the phase angle of the non-zeroth items of the FFT result.
本方法利用快速傅里叶变换(FFT)结果作为基础，从非零项的相位角的正切值得出被测的荧光寿命，具有速度快、误差小、不受本底干扰等一系列优点。
参考来源 - 期刊学术社区The stress intensity factors, the energy release rate and the phase angle are obtained for various values of elastic mismatch between the film and the substrate.
对于薄膜与基体之间的不同弹性错配系数，给出应力强度因子、能量释放率以及相位角。
参考来源 - 压痕脱层试验方法中的力学问题研究Good linear statistical relation existed between each factor and the initial stiffness modulus, fatigue life, phase angle and dissipated energy index of gussasphalt concrete.
各因素与浇注式沥青混凝土的初始劲度模量、疲劳寿命、滞后角以及耗散能指标之间存在良好的线性统计关系。
参考来源 - 浇注式沥青混凝土疲劳性能研究·2,447,543篇论文数据，部分数据来源于NoteExpress
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