Article(id=1239136722617947080, tenantId=1146029695717560320, journalId=1238841944844054536, issueId=1239136718008414574, articleNumber=null, orderNo=null, doi=10.12347/j.ycyk.20241217007, pmid=null, cstr=32406.14.ycyk.20241217007, oa=null, hot=null, price=null, onlineType=0, articleFormat=0, articleType=null, articleTypeStr=null, receivedDate=1734364800000, receivedDateStr=2024-12-17, revisedDate=1740499200000, revisedDateStr=2025-02-26, acceptedDate=null, acceptedDateStr=null, onlineDate=1773362816719, onlineDateStr=2026-03-13, pubDate=1752508800000, pubDateStr=2025-07-15, doiRegisterDate=null, doiRegisterDateStr=null, onlineIssueDate=1773362816719, onlineIssueDateStr=2026-03-13, onlineJustAcceptDate=null, onlineJustAcceptDateStr=null, onlineFirstDate=null, onlineFirstDateStr=null, sourceXml=null, magXml=null, createTime=1773362816719, creator=13701087609, updateTime=1773362816719, updator=13701087609, issue=Issue{id=1239136718008414574, tenantId=1146029695717560320, journalId=1238841944844054536, year='2025', volume='46', issue='4', pageStart='1', pageEnd='148', issueExtLink='null', onlineDate='null', pubDate='null', beforeIssueId=null, nextIssueId=null, price=null, status=1, issueComplete=1, articleOrder=1, issueType=-1, specialIssue=null, createTime=1773362815620, creator=13701087609, updateTime=1773393299751, updator=13701087609, preIssue=null, nextIssue=null, ext={EN=IssueExt(id=1239264577775522632, tenantId=1146029695717560320, journalId=1238841944844054536, issueId=1239136718008414574, language=EN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=), CN=IssueExt(id=1239264577775522633, tenantId=1146029695717560320, journalId=1238841944844054536, issueId=1239136718008414574, language=CN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=)}, issueFiles=null}, startPage=140, endPage=148, ext={EN=ArticleExt(id=1239136722907354065, articleId=1239136722617947080, tenantId=1146029695717560320, journalId=1238841944844054536, language=EN, title=Efficient Structure and Implementation of Digital Channelization Based on Two-Dimensional DFT, columnId=1239133500033528732, journalTitle=Journal of Telemetry, Tracking and Command, columnName=Radar and Countermeasures, runingTitle=null, highlight=null, articleAbstract=
Digital channelization has been widely applied in the field of electronic reconnaissance. The multi-phase structure of digital channelization can reduce data rates, making it easier to implement in FPGA. However, when the number of sub-channels is large, the data rate of each sub-channel will be significantly lower than the processing rate of FPGA, resulting in a waste of FPGA resources. In this paper, we introduce two-dimensional DFT into traditional DFT digital channelization structure and propose a channelization structure that matches the processing rate of FPGA, namely the digital channelization structure based on two-dimensional DFT. This structure is verified through simulation in Matlab(Matrix Laboratory),and its computational complexity is analyzed and compared with that of traditional DFT-based digital channelization structure. Subsequently, the FPGA implementation block diagram and FPGA resource utilization are presented, and then the structure is tested on a hardware platform. The results show that the digital channelization structure based on two-dimensional DFT can correctly perform channelization of various signals. Compared with the traditional DFT-based digital channelization structure, it reduces computational complexity and significantly improves the efficiency of FPGA resources utilization, facilitating the FPGA implementation of large-scale digital channelization, which has certain engineering significance.
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数字信道化在电子侦察领域有广泛应用,其多相结构能够降低数据率,便于在FPGA中实现。然而,当子信道数量比较大时,子信道数据率会显著低于FPGA处理速率,这会造成FPGA资源的极大浪费。本文将二维DFT引入传统的DFT数字信道化结构,提出了一种匹配FPGA处理速率的信道化结构,即基于二维DFT的数字信道化结构。在Matlab中进行了仿真验证,分析了该信道化结构的计算复杂度,并与基于DFT的数字信道化结构进行对比。随后给出了FPGA实现框图及FPGA资源使用情况并在硬件平台上进行了测试。结果表明,基于二维DFT的数字信道化结构能够正确完成各种信号的信道化处理,且与基于DFT的数字信道化结构相比,降低了计算复杂度,显著提高了FPGA资源的使用效率,便于大规模数字信道化在FPGA上的实现,具有工程意义。
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, authorsList=李潇, 张国玉)}, authors=[Author(id=1239263359598653896, tenantId=1146029695717560320, journalId=1238841944844054536, articleId=1239136722617947080, orderNo=0, firstName=null, middleName=null, lastName=null, nameCn=null, orcid=null, stid=null, country=null, authorPic=null, dead=0, email=null, emailSecond=null, emailThird=null, correspondingAuthor=0, authorType=1, ext={EN=AuthorExt(id=1239263359678345677, tenantId=1146029695717560320, journalId=1238841944844054536, articleId=1239136722617947080, authorId=1239263359598653896, language=EN, stringName=Xiao LI, firstName=Xiao, middleName=null, lastName=LI, prefix=null, suffix=null, authorComment=null, nameInitials=null, affiliation=null, department=null, xref=null, address=Beijing Research Institute of Telemetry, Beijing 100076, China, bio=null, bioImg=null, bioContent=null, aboutCorrespAuthor=null), CN=AuthorExt(id=1239263359758037461, tenantId=1146029695717560320, journalId=1238841944844054536, articleId=1239136722617947080, authorId=1239263359598653896, language=CN, stringName=李潇, firstName=null, middleName=null, lastName=null, prefix=null, suffix=null, authorComment=null, nameInitials=null, affiliation=null, department=null, xref=null, address=北京遥测技术研究所 北京 100076, bio={"content":"
李潇 1991年生,硕士,工程师。
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李潇 1991年生,硕士,工程师。
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张国玉 1987年生,硕士,高级工程师。
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张国玉 1987年生,硕士,高级工程师。
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Basic structural components of digital channelized receiver, figureFileSmall=WNPvQgAdidnPdPgbpPRvvg==, figureFileBig=PyYfNYjaGqEPRCDvipjNmQ==, tableContent=null), ArticleFig(id=1239263361590948377, tenantId=1146029695717560320, journalId=1238841944844054536, articleId=1239136722617947080, language=CN, label=图1, caption=
数字信道化基本结构, figureFileSmall=WNPvQgAdidnPdPgbpPRvvg==, figureFileBig=PyYfNYjaGqEPRCDvipjNmQ==, tableContent=null), ArticleFig(id=1239263361783886365, tenantId=1146029695717560320, journalId=1238841944844054536, articleId=1239136722617947080, language=EN, label=Fig. 2, caption=
Digital channelized receiver based on DFT, figureFileSmall=nOTJGqhQxnnUTBchqf0Zzw==, figureFileBig=oLP5YsNI2DDYueV7DBvgUQ==, tableContent=null), ArticleFig(id=1239263361880355364, tenantId=1146029695717560320, journalId=1238841944844054536, articleId=1239136722617947080, language=CN, label=图2, caption=
基于DFT的数字信道化结构, figureFileSmall=nOTJGqhQxnnUTBchqf0Zzw==, figureFileBig=oLP5YsNI2DDYueV7DBvgUQ==, tableContent=null), ArticleFig(id=1239263361981018663, tenantId=1146029695717560320, journalId=1238841944844054536, articleId=1239136722617947080, language=EN, label=Fig. 3, caption=
Digital channelized receiver based on 2-dimensional DFT, figureFileSmall=y30PNWwGqYclapAuHTuYng==, figureFileBig=PrBnT4NWkRvOAF70O2I+9g==, tableContent=null), ArticleFig(id=1239263362106847785, tenantId=1146029695717560320, journalId=1238841944844054536, articleId=1239136722617947080, language=CN, label=图3, caption=
基于二维DFT的数字信道化结构, figureFileSmall=y30PNWwGqYclapAuHTuYng==, figureFileBig=PrBnT4NWkRvOAF70O2I+9g==, tableContent=null), ArticleFig(id=1239263362224288299, tenantId=1146029695717560320, journalId=1238841944844054536, articleId=1239136722617947080, language=EN, label=Fig. 4, caption=
Comparison of computational complexity under different number of subchannels, figureFileSmall=LkFFqpZGgHGCUhCjGsetVw==, figureFileBig=DQzhd2WKb9l4peka2ua0fQ==, tableContent=null), ArticleFig(id=1239263362312368687, tenantId=1146029695717560320, journalId=1238841944844054536, articleId=1239136722617947080, language=CN, label=图4, caption=
不同子信道数量下的计算复杂度对比, figureFileSmall=LkFFqpZGgHGCUhCjGsetVw==, figureFileBig=DQzhd2WKb9l4peka2ua0fQ==, tableContent=null), ArticleFig(id=1239263362392060469, tenantId=1146029695717560320, journalId=1238841944844054536, articleId=1239136722617947080, language=EN, label=Fig. 5, caption=
FPGA implementation of digital channelization structure based on two-dimensional DFT, figureFileSmall=Tc3ZFztoBbmYYRnvjlVqqg==, figureFileBig=SWHDWEWKLolmEJlOys1r+w==, tableContent=null), ArticleFig(id=1239263362492723766, tenantId=1146029695717560320, journalId=1238841944844054536, articleId=1239136722617947080, language=CN, label=图5, caption=
基于二维DFT信道化结构的FPGA实现, figureFileSmall=Tc3ZFztoBbmYYRnvjlVqqg==, figureFileBig=SWHDWEWKLolmEJlOys1r+w==, tableContent=null), ArticleFig(id=1239263362572415547, tenantId=1146029695717560320, journalId=1238841944844054536, articleId=1239136722617947080, language=EN, label=Fig. 6, caption=
Input signals and channel division, figureFileSmall=JKBzOZaNuvQ02fFMvI87TA==, figureFileBig=OCSwCq1/EpJEL72joFHxIA==, tableContent=null), ArticleFig(id=1239263362668884542, tenantId=1146029695717560320, journalId=1238841944844054536, articleId=1239136722617947080, language=CN, label=图6, caption=
输入信号分布及信道划分, figureFileSmall=JKBzOZaNuvQ02fFMvI87TA==, figureFileBig=OCSwCq1/EpJEL72joFHxIA==, tableContent=null), ArticleFig(id=1239263362756964934, tenantId=1146029695717560320, journalId=1238841944844054536, articleId=1239136722617947080, language=EN, label=Fig. 7, caption=
Time domain waveform, figureFileSmall=aqigfD+VQud8BrM0wvRa+Q==, figureFileBig=QDVMQwAZcO6f6yJMW+p9Ag==, tableContent=null), ArticleFig(id=1239263362845045320, tenantId=1146029695717560320, journalId=1238841944844054536, articleId=1239136722617947080, language=CN, label=图7, caption=
时域波形, figureFileSmall=aqigfD+VQud8BrM0wvRa+Q==, figureFileBig=QDVMQwAZcO6f6yJMW+p9Ag==, tableContent=null), ArticleFig(id=1239263362941514316, tenantId=1146029695717560320, journalId=1238841944844054536, articleId=1239136722617947080, language=EN, label=Fig. 8, caption=
Spectrum waveform, figureFileSmall=XLQWwrzW9S5CSM8H2xy4cw==, figureFileBig=RpBOhCik3izu9S5p2fSgUQ==, tableContent=null), ArticleFig(id=1239263363029594703, tenantId=1146029695717560320, journalId=1238841944844054536, articleId=1239136722617947080, language=CN, label=图8, caption=
频谱波形, figureFileSmall=XLQWwrzW9S5CSM8H2xy4cw==, figureFileBig=RpBOhCik3izu9S5p2fSgUQ==, tableContent=null), ArticleFig(id=1239263363100897875, tenantId=1146029695717560320, journalId=1238841944844054536, articleId=1239136722617947080, language=EN, label=Fig. 9, caption=
Time domain waveform from hardware test, figureFileSmall=Bl0JAomySGEi06E7vSmmaQ==, figureFileBig=ZrC/Jxesk62dkl3FjNsT/Q==, tableContent=null), ArticleFig(id=1239263363172201044, tenantId=1146029695717560320, journalId=1238841944844054536, articleId=1239136722617947080, language=CN, label=图9, caption=
硬件测试时域波形, figureFileSmall=Bl0JAomySGEi06E7vSmmaQ==, figureFileBig=ZrC/Jxesk62dkl3FjNsT/Q==, tableContent=null), ArticleFig(id=1239263363251892822, tenantId=1146029695717560320, journalId=1238841944844054536, articleId=1239136722617947080, language=EN, label=Fig. 10, caption=
Spectrum waveform from hardware test, figureFileSmall=K9L71JWFB7HFVos8bxumXA==, figureFileBig=IP3+Ir0xW21oyl3sMdfMLQ==, tableContent=null), ArticleFig(id=1239263363331584599, tenantId=1146029695717560320, journalId=1238841944844054536, articleId=1239136722617947080, language=CN, label=图10, caption=
硬件测试频谱波形, figureFileSmall=K9L71JWFB7HFVos8bxumXA==, figureFileBig=IP3+Ir0xW21oyl3sMdfMLQ==, tableContent=null), ArticleFig(id=1239263363415470681, tenantId=1146029695717560320, journalId=1238841944844054536, articleId=1239136722617947080, language=EN, label=Table 1, caption=
Comparison of computation complexity
, figureFileSmall=null, figureFileBig=null, tableContent=
| 基于DFT的数字信道化结构 | 基于二维DFT的数字信道化结构 |
|---|
| 多相滤波 | K个多相子带滤波器 实数乘法:O(N) 实数加法:O(N) | K个多相子带滤波器 实数乘法:O(N/L) 实数加法:O(N/L) |
| 串行FFT | —— | R个L点串行FFT 复乘法: 复加法:O(Rlog2L) |
| 并行FFT | 1个K点并行FFT 复乘法: 复加法:O(Klog2K) | 1个R点并行FFT 复乘法: 复加法:O(Rlog2R) |
| 复数乘法 | O(K) | O(2R) |
| 合计 | 复乘法: 复加法:O(Klog2K) 实数乘法:O(N) 实数加法:O(N) | 复乘法: 复加法:O(Rlog2L+Rlog2R) 实数乘法:O(N/L) 实数加法:O(N/L) |
| 换算后 | 实数乘法:O(2Klog2K+4K+N) 实数加法:O(Klog2K+2K+2Klog2K+N) | 实数乘法:O(2Rlog2L+2Rlog2R+8R+N/L) 实数加法:O(Rlog2L+Rlog2R+4R+2Rlog2L+2Rlog2R+N/L) |
), ArticleFig(id=1239263363507745372, tenantId=1146029695717560320, journalId=1238841944844054536, articleId=1239136722617947080, language=CN, label=表1, caption=
计算复杂度对比
, figureFileSmall=null, figureFileBig=null, tableContent=
| 基于DFT的数字信道化结构 | 基于二维DFT的数字信道化结构 |
|---|
| 多相滤波 | K个多相子带滤波器 实数乘法:O(N) 实数加法:O(N) | K个多相子带滤波器 实数乘法:O(N/L) 实数加法:O(N/L) |
| 串行FFT | —— | R个L点串行FFT 复乘法: 复加法:O(Rlog2L) |
| 并行FFT | 1个K点并行FFT 复乘法: 复加法:O(Klog2K) | 1个R点并行FFT 复乘法: 复加法:O(Rlog2R) |
| 复数乘法 | O(K) | O(2R) |
| 合计 | 复乘法: 复加法:O(Klog2K) 实数乘法:O(N) 实数加法:O(N) | 复乘法: 复加法:O(Rlog2L+Rlog2R) 实数乘法:O(N/L) 实数加法:O(N/L) |
| 换算后 | 实数乘法:O(2Klog2K+4K+N) 实数加法:O(Klog2K+2K+2Klog2K+N) | 实数乘法:O(2Rlog2L+2Rlog2R+8R+N/L) 实数加法:O(Rlog2L+Rlog2R+4R+2Rlog2L+2Rlog2R+N/L) |
), ArticleFig(id=1239263363608408671, tenantId=1146029695717560320, journalId=1238841944844054536, articleId=1239136722617947080, language=EN, label=Table 2, caption=
Comparison of resource usage in FPGA
, figureFileSmall=null, figureFileBig=null, tableContent=
| 基于DFT的数字信道化结构 | 基于二维DFT的数字信道化结构 |
|---|
| LUT | 50 523 | 6 342 |
| FF | 37 077 | 10 984 |
| DSP | 288 | 92 |
| LUTRAM | 3 038 | 2 016 |
), ArticleFig(id=1239263363683906146, tenantId=1146029695717560320, journalId=1238841944844054536, articleId=1239136722617947080, language=CN, label=表2, caption=
FPGA资源使用对比
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| 基于DFT的数字信道化结构 | 基于二维DFT的数字信道化结构 |
|---|
| LUT | 50 523 | 6 342 |
| FF | 37 077 | 10 984 |
| DSP | 288 | 92 |
| LUTRAM | 3 038 | 2 016 |
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