数据采集与处理2013，Vol.28Issue(2)：173-177,5.
一种改进的基于FFT的信号插值算法
Improved Algorithm for Interpolation Based on FFT
摘要
Abstract
On the basis of the traditional interpolation algorithm using FFT, an algorithm is proposed to improve the accuracy of interpolation . The algorithm overlaps and cuts the subsequences. Then it discards the samples with great error at both ends of interpolated sequence and reconstructs the relatively accurate samples. In this way, the accuracy of interpolation can be significantly improved. Experimental results show that, compared with the interpolation algorithm proposed by Prasad, in case of computational amount increasing by 3. 1%, the normalized mean square errors corresponding to different subsequence lengths decrease to 1/19 of their original in average. In case of computational amount increasing by twice, the normalized mean square errors corresponding to different subsequence lengths decrease to 1/75 of their original in average.关键词
快速傅里叶变换(FFT)/抽样/插值Key words
fast Fourier transform (FFT)/ sampling/ interpolation分类
信息技术与安全科学引用本文复制引用
张翼鹏,陈亮,郝欢,郑国宏,梁晓明..一种改进的基于FFT的信号插值算法[J].数据采集与处理,2013,28(2):173-177,5.基金项目
国家自然科学基金(61072042)资助项目. （61072042）
