Volterra series are used to model certain classes of non linear systems. This resulting model prouds by its linearity with respect to its parameters but it presents some drawback due to the complexity resulting the huge number of parameters e

运用volterra级数来分析求解其二阶核，包括运用各种算法，比如脉冲激励法，最小二乘法-Use volterra series analysis to solve the second-order core, including the use of various algorithms, such as pulse excitation method, least square method, etc.