| 摘要: |
| 分析了信源数目估计误差下的MUSIC算法性能.为了解决信源数目过估计下出现虚假信号和欠估计下谱峰消失的问题,提出了一种改进算法.该算法通过对采样数据的共轭重排再利用,重新构造相关矩阵来改善测向性能.改进的算法不仅能成功运用于非相关信号源和相关信号源,还具有不用考虑信源数目的优点.计算机仿真结果证明了改进算法的正确性和有效性. |
| 关键词: 阵列信号处理 DOA估计 修正MUSIC算法 |
| DOI：10.3969/j.issn.1001-893X. |
| 修订日期：2006-11-07 |
| 基金项目:海军装备预研基金 |
|
| A Modified MUSIC Algorithm without Considering the Source Number |
|
| () |
| Abstract: |
| The performance of MUSIC algorithm under error source number is analyzed.In order to resolve the disappear ance of some peaks in MUSIC spectrum when the source number is under-estimated and the appearance of some unexpected false peaks in MUSIC spectrum when the source number is over estimated,a modified MUSIC algorithm is presented which can improve the performance of DOA by reusing the conjugate data rearranged and reconstructing the correlation matrix.The modified algorithm can estimate the coherent and uncorrelated signal successfully without considering the source number.Computer simulation results prove the correctness and validity of this modified algorithm. |
| Key words: array signal processing,DOA estimation,modified MUSIC algorithm |
《电讯技术》编辑部 