| 多分量调频信号的阵列处理时频特征提取 |
| |
| 引用本文： | 王雪飞,尚朝轩. 多分量调频信号的阵列处理时频特征提取[J]. 数据采集与处理, 2012, 27(4) |
| |
| 作者姓名： | 王雪飞 尚朝轩 |
| |
| 作者单位： | 军械工程学院 光学与电子工程系雷达工程教研室 河北 石家庄05003,军械工程学院 光学与电子工程系雷达工程教研室 河北 石家庄05003 |
| |
| 摘 要： | 在应用时频—MUSIC方法对多分量调频信号进行到达角估计的问题中，针对时频分布中交叉项的存在对估计性能的影响，本文提出了一种基于阵列信号处理抑制时频分布交叉项的新方法。该方法利用多信源在各阵元上的延迟对时频分布交叉项振荡相位的影响，联合运用多通道信号处理和图像处理的方法，采用二维乘法滤波，减小高频振荡交叉项在时频图像中的占据区域，从而达到抑制交叉项的目的。仿真实验显示该方法具有良好的效果。
|
| 关 键 词： | 阵列信号处理 时频分布 交叉项抑制 二维乘法滤波 |
| 收稿时间： | 2011-06-10 |
| 修稿时间： | 2011-10-11 |
Time-Frequency Character Extraction for Multi-FM Signal Based on Array Signal Processing |
| |
| Wang xue-fei and Shang Chang-xuan. Time-Frequency Character Extraction for Multi-FM Signal Based on Array Signal Processing[J]. Journal of Data Acquisition & Processing, 2012, 27(4) |
| |
| Authors: | Wang xue-fei and Shang Chang-xuan |
| |
| Affiliation: | Optical and Electronic Engineering Department,Ordnance Egineering College,Optical and Electronic Engineering Department,Ordnance Egineering College |
| |
| Abstract: | A new approach is proposed for cross terms suppression for multi-component FM signals in space-time parameter estimation with antenna array . The method utilizes spatial domain information in multi-channel and employs a 2-dimension product filter to reduce cross terms of time-frequency distribution. The filtered TFD(Time-Frequency Distribution) can be applied to estimate DOAs(direction-of-arrival) of FM signals by time-frequency MUSIC(Multiple Signal Classification). Simulation results are presented verifying the efficacy of this method. |
| |
| Keywords: | |
|
| 点击此处可从《数据采集与处理》浏览原始摘要信息 |
|
点击此处可从《数据采集与处理》下载全文 |
