Flexible Filter Bank Based on an Improved Weighted Overlap-Add Algorithm for Processing Wide Bandwidth Radio Astronomy Signals
文献类型：期刊论文
| 作者 | Wang, Xianhai1; Meng, Qiao1; Han, J. L.2; Liu, Wei1; Zhang, Jianwei3 |
| 刊名 | PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF THE PACIFIC
 |
| 出版日期 | 2015-12-01 |
| 卷号 | 127期号:958页码:1263-1268 |
| 英文摘要 | Wideband signals from a radio telescope have to be channelized for spectral observations or for dedispersion for pulsar observations. A polyphase filter bank is designed based on the improved weighted overlap-add (IWOLA) algorithm to achieve channelization. The IWOLA algorithm involves applying an equivalent Hilbert transform to the normal WOLA filter bank by shifting the center frequency of every sub-band by a half of the frequency bin, so that the IWOLA filter bank provides K independently output complex subbands instead of the usual K+1 sub-bands, reducing the subsequent processing units by one set. Performance of the proposed IWOLA filter bank is analyzed by means of MATLAB simulations. We show how the IWOLA filter bank can be used for a two-stage, high-resolution spectrometer, with a much reduced consumption of FPGA on-chip block RAM. |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000366624400006 |
| 源URL | [http://ir.bao.ac.cn/handle/114a11/5494]  |
| 专题 | 国家天文台_射电天文研究部 |
| 作者单位 | 1.Southeast Univ, Inst Radiofrequency & Optoelect Integrated Circui, Nanjing 210096, Jiangsu, Peoples R China 2.Chinese Acad Sci, Natl Astron Observ, Beijing 100012, Peoples R China 3.China Aerosp Sci & Ind Corp, Res Inst 8511, Nanjing 210007, Jiangsu, Peoples R China |
| 推荐引用方式 GB/T 7714 | Wang, Xianhai,Meng, Qiao,Han, J. L.,et al. Flexible Filter Bank Based on an Improved Weighted Overlap-Add Algorithm for Processing Wide Bandwidth Radio Astronomy Signals[J]. PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF THE PACIFIC,2015,127(958):1263-1268. |
| APA | Wang, Xianhai,Meng, Qiao,Han, J. L.,Liu, Wei,&Zhang, Jianwei.(2015).Flexible Filter Bank Based on an Improved Weighted Overlap-Add Algorithm for Processing Wide Bandwidth Radio Astronomy Signals.PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF THE PACIFIC,127(958),1263-1268. |
| MLA | Wang, Xianhai,et al."Flexible Filter Bank Based on an Improved Weighted Overlap-Add Algorithm for Processing Wide Bandwidth Radio Astronomy Signals".PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF THE PACIFIC 127.958(2015):1263-1268. |
入库方式： OAI收割
来源：国家天文台
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