正弦公式

通过分析信号频谱，确定了时域分析的可行性，推导了三参数最小二乘正弦拟合的公式，通过时域与频域结果的比较验证了这种分析方法的正确性。

Time domain analysis method is confirmed to be possible by the spectrum analysis of signal . The formula of 3-parameter least square fitting is derived . This method is verified by comparing frequency domain result with time domain result .

本文提出一个计算正弦积分的新公式。在不同的地质领域内使用了最佳数字滤波器。

In this paper , a new formula for calculation of sinusoidal integral is presented and the optimum numerical filter is already applied in different fields of geology .

本文将解一阶定常线性系统过渡过程的三要素法推广到正弦激励条件下，给出了直流激励与正弦激励的统一公式。

" The three essential element method " for solving , transient process of First-order invariant linear system is extended to the condition of sinusoidal excitation in this paper . A uniform formula of direct and sinusoidal excitation is concluded .