【摘要】 本文首次从运算量的角度,研究了现有ARMA谱值估计(包括最大熵谱值估计)的几种快速算法的各自特点,指出综合利用三角函数的周期性和递推性关系是进一步提高谱值估计速度的有效途径,同时指出,在计算机上实现ARMA谱值估计时,三角函数的调用时间在整个计算时间中占有相当的比例。在此基础上,本文提出了一种综合快速算法,理论与试验结果表明,该算法无论在计算速度上,还是在算法的综合性能方面均是优越的。更多还原

【Abstract】 The respective properties of some fast algerithms for ARMA spectram valae estimation are examined from the view of the number of operation. Through a careful analysis, it is pointed out that the comprehensive utlization of periodicity and recarrence relation of trigonometric function is an offective way to increase the speed of spe-c trum value estimation. It is shoun that the operation of trigonometric function occupies an important part in the whole calculation of ARMA spectrum value estimation. Furthermore, an comprehensive fast algorithm is developed on the basis of this analysis, the results provided in this papei show that this fast algorithm is effective.更多还原