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| 变换域自适应抗干扰方法及其FPGA实现 | |
| 引用本文： | 孙峰,金炜东,王博.变换域自适应抗干扰方法及其FPGA实现[J].全球定位系统,2008,33(6). |
| 作者姓名： | 孙峰 金炜东 王博 |
| 作者单位： | 1. 西南交通大学信息科学与技术学院,成都,610031 2. 西南交通大学信息电气工程学院,成都,6100312 3. 卫星导航应用国家工程研究中心,北京,100176 |
| 摘 要： | 针对卫星扩频通信中的强窄带干扰,提出了一种基于频域处理的自适应窄带干扰抑制技术.该方法是将时域信号通过傅立叶变换形成一组近似正交的分量,在不相关的各频率点上分别进行LMS滤波.采用FPGA芯片EP2S60F48414完成自适应滤波器设计.结果表明:该频域算法运算量以及收敛性都优于时域滤波,具有很好的抗干扰性能. |
| 关 键 词： | 窄带干扰 自适应算法 最小均方(LMS) |
Transform Domain Adaptive Method for Suppressing Interference and Its FPGA Implementation |
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| SUN Feng,JIN Wei-dong,WANG Bo.Transform Domain Adaptive Method for Suppressing Interference and Its FPGA Implementation[J].Gnss World of China,2008,33(6). | |
| Authors: | SUN Feng JIN Wei-dong WANG Bo |
| Institution: | SUN Feng1,JIN Wei-dong2,WANG Bo3(1.College of Information Science & Technology,Southwest Jiaotong University,Chengdu,610031,China,2.College of Electrical Engineering,3.National Engineering Research Center of Satellite Navigation Applications,Beijing,100176,China) |
| Abstract: | According to strong narrow-band interference in satellite spectrum-spread communicat-ion,an adaptive method based on transform domain for interference suppression is presented here.This method transform signal into an orthogonal group,and do LMS filter in each spectrum dot.The LMS filter is designed using FPGA chip EP2S60F484I4.The simulation results show that the method works effectively,converges more quickly than time-domain filter,and has strong suppressing interference capabilities. |
| Keywords: | FPGA |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ | |