| 一种改进的频率高精度估计方法 |
| |
| 引用本文： | 郑金良,彭 华,葛临东.一种改进的频率高精度估计方法[J].信息工程大学学报,2006,7(3):274-276,296. |
| |
| 作者姓名： | 郑金良 彭 华 葛临东 |
| |
| 作者单位： | 信息工程大学,信息工程学院,河南,郑州,450002 |
| |
| 摘 要： | 基于DFT相位的估计频率算法,当要估计的频率正好位于谱线上时,性能良好,而当处于两相邻谱线正中间时,由于噪声的影响,性能恶化,估计精度低。本文给出了一种改进的频率估计算法,其思想是对所要估计的频率进行频移,该改进算法解决了上述问题,使得算法更具普遍性。本文用Monte Carlo实验对改进算法的性能进行了仿真。
|
| 关 键 词： | 频率估计 离散傅立叶变换 相邻谱线正中间 相位跳变 |
| 文章编号： | 1671-0673（2006）03-0274-03 |
| 收稿时间： | 2006-03-20 |
| 修稿时间： | 2006-03-202006-05-31 |
Modified Algorithm of High-Accuracy Frequency Estimation |
| |
| ZHENG Jin-iang,PENG Hu,GE Lin-dong.Modified Algorithm of High-Accuracy Frequency Estimation[J].Journal of Information Engineering University,2006,7(3):274-276,296. |
| |
| Authors: | ZHENG Jin-]iang PENG Hu GE Lin-dong |
| |
| Affiliation: | Institute of Information Engineering, Information Engineering University, Zhengzhou 450002, China |
| |
| Abstract: | The frequency estimation algorithms based on DFT perform well when the frequency point lies just in the DFT spectrum line positions.However if there is a position offset between the practical frequency component and DFT spectrum line positions,the estimation performance would become worse.A modified algorithm proposed in this paper is targeted to solve this problem,the basic idea of which is to change the frequency to be estimated. |
| |
| Keywords: | frequency estimation DFT the center of two consecutive spectrum lines phase jump |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
| 点击此处可从《信息工程大学学报》浏览原始摘要信息 |
|
点击此处可从《信息工程大学学报》下载全文 |
|
