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| 非正则复向量的扩展MVDR算法研究 | |
| 引用本文： | 贾鹏,丛丰裕,周士弘,杜栓平,史习智.非正则复向量的扩展MVDR算法研究[J].声学技术,2008,27(1):106-109. |
| 作者姓名： | 贾鹏 丛丰裕 周士弘 杜栓平 史习智 |
| 作者单位： | 1. 国家移动卫星通信工程技术研究中心,210002;东南大学信息科学与工程学院,210096 2. 上海交通大学机械系统与振动国家重点试验室,200240;杭州应用声学研究所,310012 3. 杭州应用声学研究所,310012 4. 上海交通大学机械系统与振动国家重点试验室,200240 |
| 基金项目： | 上海市科委资助项目 , 国家重点实验室开放式基金 |
| 摘 要： | 研究了非正则复向量的特性对MVDR算法的影响。将阵元接收数据经过FFT运算后，在任一频率下的列向量都是非正则复向量。根据非正则复向量伪自相关阵的特性．提出了扩展自相关矩阵和扩展驾驶向量，推导出了扩展MVDR（ExMVDR）算法：仿真试验表明ExMVDR算法比MVDR能够更好的压制旁瓣，主瓣的信噪比能够提高2dB左右。 |
| 关 键 词： | 非正则 复向量 MVDR 扩展自相关矩阵 |
| 文章编号： | 1000-3630（2008）-01-0106-04 |
| 收稿时间： | 2007-01-15 |
| 修稿时间： | 2007-05-08 |
Improper complex vector-oriented ExMVDR algorithm |
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| JIA Peng,CONG Feng-yu,ZHOU Shi-hong,DU Shuan-ping and SHI Xi-zhi.Improper complex vector-oriented ExMVDR algorithm[J].Technical Acoustics,2008,27(1):106-109. | |
| Authors: | JIA Peng CONG Feng-yu ZHOU Shi-hong DU Shuan-ping and SHI Xi-zhi |
| Affiliation: | JIA Peng, CONG Feng-yu, ZHOU Shi-hong, DU Shuan-ping, SHI Xi-zhi (1. NERC for Mobile Satellite Comunication, Nanjing 210002, China; 2. State Key Lab of Mechanical System and Vibration, Shanghai Jiao Tong University, Shanghai 200240, China; 3. Hangzhou Applied Acoustics Research Institute, Hangzhou 310012, China; 4. School of Information Science and Engineering, Southeast University, Nanjing 210096, China) |
| Abstract: | The influence of the characteristic of the improper complex vector on MVDR algorithm is studied. After FFT is performed on the received data from array, the column vector in each frequency bin is improper. According tothe characteristic of the pseudo-autocorrelation matrix of the improper complex vector, the extended autocorrelation matrix and the extended steering vector are brought forward. Thereby, a new extended MVDR （ExMVDR） algorithm is presented. Simulation results show that ExMVDR can suppress the side-lobe well and improve the SNR of main lobe about 2dB. |
| Keywords: | improper complex vector： MVDR extended autocorrelation matrix |
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