O174.2
Approximation order plays an important role in characterizing multiscaling functios.The sufficient and necessary condition of approximation order is obtained by studying M - band multiscaling functions in frequency domain.
毛一波 张必山 杨万年. M带多尺度函数逼近阶的频域条件[J].重庆大学学报,2003,26(12):88~91