Channelization of wideband signal based on critical sampling polyphase filter banks

被引：0

作者：

Zhang H.-L. ^{[1
,2
,3
,4
]}

Zhang M. ^{[1
,2
]}

Zhang Y.-Z. ^{[1
,2
]}

Wang J. ^{[1
,4
]}

Ye X.-C. ^{[1
,4
]}

Wang W.-Q. ^{[1
]}

Li J. ^{[1
]}

Du X. ^{[1
,2
]}

Zhang T. ^{[1
,2
]}

机构：

[1] Xinjiang Astronomical Observatory, Chinese Academy of Sciences, Urumqi

[2] School of Astronomy and Space Science, University of Chinese Academy of Sciences, Beijing

[3] Key Laboratory of Radio Astronomy, Chinese Academy of Sciences, Nanjing

[4] National Astronomical Data Center, Beijing

来源：

Jilin Daxue Xuebao (Gongxueban)/Journal of Jilin University (Engineering and Technology Edition) | 2023年 / 53卷 / 08期

关键词：

astroinformatics; channelization; digital filter banks; fir filter; polyphase filter banks;

D O I：

10.13229/j.cnki.jdxbgxb.20220274

中图分类号：

学科分类号：

摘要：

In view of spectral leakage and aliasing in the wideband signal channelization in the field of communication and radio astronomy. The effects of different window functions such as Hanning windows，Hamming windows and Kaiser windows on the performance of the finite impulse response（FIR）digital filter were simulated and analyzed. Based on the Hamming window FIR digital filter designed and implemented the critical sampling polyphase filter banks，and the spectral characteristics of the critical sampling polyphase filter banks were studied. The sub-bands division of wideband signals were realized by using the astronomical observation baseband data，and the filtering performance characteristics of the critical sampling polyphase filter banks and FIR digital filter banks were analyzed. Employed the critical sampling polyphase filter banks realized the multichannel output of wideband baseband data，and the frequency spectrum of the sub-channels was analyzed and corrected，which correspond to the original signal. © 2023 Editorial Board of Jilin University. All rights reserved.

引用

页码：2388 / 2394

页数：6

共 16 条

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