Design and Simulation of a Fully Digitized GNSS Receiver Front-End
In the near future, RF front-ends of GNSS receivers may become very complicated when multifrequency signals are available from at least four global navigation systems. Based on the direct RF sampling technique, fully digitized receiver front-ends may solve the problem. In this paper, a direct digiti...
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| Format: | Article |
| Language: | English |
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Wiley
2011-01-01
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| Series: | Discrete Dynamics in Nature and Society |
| Online Access: | http://dx.doi.org/10.1155/2011/329535 |
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| _version_ | 1832562543706505216 |
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| author | Yuan Yu Qing Chang Yuan Chen |
| author_facet | Yuan Yu Qing Chang Yuan Chen |
| author_sort | Yuan Yu |
| collection | DOAJ |
| description | In the near future, RF front-ends of GNSS receivers may become very complicated when multifrequency signals are available from at least four global navigation systems. Based on the direct RF sampling technique, fully digitized receiver front-ends may solve the problem. In this paper, a direct digitization RF front-end scheme is presented. At first, a simplified sampling rate selection method is adopted to determine the optimal value. Then, the entire spectrum of GNSS signal is directly digitized through RF sampling at a very fast sampling rate. After that, the decimation and filtering network is designed to lower the sampling rate efficiently. It also realizes the digital downconversion of the signal of interest and the separation of narrow band signals from different navigation systems. The scheme can be flexibly implemented in software. Its effectiveness is proved through the experiment using simulated and true signals. |
| format | Article |
| id | doaj-art-8f23cffb4ba249ce8117c79c79b3c78a |
| institution | Kabale University |
| issn | 1026-0226 1607-887X |
| language | English |
| publishDate | 2011-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Discrete Dynamics in Nature and Society |
| spelling | doaj-art-8f23cffb4ba249ce8117c79c79b3c78a2025-02-03T01:22:21ZengWileyDiscrete Dynamics in Nature and Society1026-02261607-887X2011-01-01201110.1155/2011/329535329535Design and Simulation of a Fully Digitized GNSS Receiver Front-EndYuan Yu0Qing Chang1Yuan Chen2School of Electronic and Information Engineering, Beihang University (BUAA), Beijing 100191, ChinaSchool of Electronic and Information Engineering, Beihang University (BUAA), Beijing 100191, ChinaSchool of Electronic and Information Engineering, Beihang University (BUAA), Beijing 100191, ChinaIn the near future, RF front-ends of GNSS receivers may become very complicated when multifrequency signals are available from at least four global navigation systems. Based on the direct RF sampling technique, fully digitized receiver front-ends may solve the problem. In this paper, a direct digitization RF front-end scheme is presented. At first, a simplified sampling rate selection method is adopted to determine the optimal value. Then, the entire spectrum of GNSS signal is directly digitized through RF sampling at a very fast sampling rate. After that, the decimation and filtering network is designed to lower the sampling rate efficiently. It also realizes the digital downconversion of the signal of interest and the separation of narrow band signals from different navigation systems. The scheme can be flexibly implemented in software. Its effectiveness is proved through the experiment using simulated and true signals.http://dx.doi.org/10.1155/2011/329535 |
| spellingShingle | Yuan Yu Qing Chang Yuan Chen Design and Simulation of a Fully Digitized GNSS Receiver Front-End Discrete Dynamics in Nature and Society |
| title | Design and Simulation of a Fully Digitized GNSS Receiver Front-End |
| title_full | Design and Simulation of a Fully Digitized GNSS Receiver Front-End |
| title_fullStr | Design and Simulation of a Fully Digitized GNSS Receiver Front-End |
| title_full_unstemmed | Design and Simulation of a Fully Digitized GNSS Receiver Front-End |
| title_short | Design and Simulation of a Fully Digitized GNSS Receiver Front-End |
| title_sort | design and simulation of a fully digitized gnss receiver front end |
| url | http://dx.doi.org/10.1155/2011/329535 |
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