多尺度投影寻踪信号分解

摘要

构建了一种多尺度投影寻踪模型, 利用两个方向投影的方差比作为投影指标, 通过使投影指标最大来寻找投影方向. 从仿真结果可知, 当投影支撑度为2时最佳投影方向与Haar小波的滤波器系数一致.%In this paper, a multiscale projection pursuit model for signal decomposition was proposed using the quotient of two projecst as projection index. The best project directions were found by maximizing the project index, that agree with the filter coefficients for Haar's wavelet. So this model has a strong guiding significance for design filter in decomposing signal.