Doppler Shift Tolerance of Typical Pseudorandom Binary Sequences in PMCW Radar
In the context of all-digital radar systems, phase-modulated continuous wave (PMCW) based on pseudorandom binary sequences (PRBSs) appears to be a prominent candidate modulation scheme for applications such as autonomous driving. Among the reasons for its candidacy are its simplified transmitter arc...
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MDPI AG
2022-04-01
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| author | Lucas Giroto de Oliveira Theresa Antes Benjamin Nuss Elizabeth Bekker Akanksha Bhutani Axel Diewald Mohamad Basim Alabd Yueheng Li Mario Pauli Thomas Zwick |
| author_facet | Lucas Giroto de Oliveira Theresa Antes Benjamin Nuss Elizabeth Bekker Akanksha Bhutani Axel Diewald Mohamad Basim Alabd Yueheng Li Mario Pauli Thomas Zwick |
| author_sort | Lucas Giroto de Oliveira |
| collection | DOAJ |
| description | In the context of all-digital radar systems, phase-modulated continuous wave (PMCW) based on pseudorandom binary sequences (PRBSs) appears to be a prominent candidate modulation scheme for applications such as autonomous driving. Among the reasons for its candidacy are its simplified transmitter architecture and lower linearity requirements (e.g., compared to orthogonal-frequency division multiplexing radars), as well as its high velocity unambiguity and multiple-input multiple-output operation capability, all of which are characteristic of digital radars. For appropriate operation of a PMCW radar, choosing a PRBS whose periodic autocorrelation function (PACF) has low sidelobes and high robustness to Doppler shifts is paramount. In this sense, this article performs an analysis of Doppler shift tolerance of the PACFs of typically adopted PRBSs in PMCW radar systems supported by simulation and measurement results. To accurately measure the Doppler-shift-induced degradation of PACFs, peak power loss ratio (PPLR), peak sidelobe level ratio (PSLR), and integrated-sidelobe level ratio (ISLR) were used as metrics. Furthermore, to account for effects on targets whose ranges are not multiples of the range resolution, oversampled PACFs are analyzed. |
| first_indexed | 2024-03-10T03:42:38Z |
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| issn | 1424-8220 |
| language | English |
| last_indexed | 2024-03-10T03:42:38Z |
| publishDate | 2022-04-01 |
| publisher | MDPI AG |
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| series | Sensors |
| spelling | doaj.art-0e0b48fe0bd94a30a1484051b74766182023-11-23T09:15:08ZengMDPI AGSensors1424-82202022-04-01229321210.3390/s22093212Doppler Shift Tolerance of Typical Pseudorandom Binary Sequences in PMCW RadarLucas Giroto de Oliveira0Theresa Antes1Benjamin Nuss2Elizabeth Bekker3Akanksha Bhutani4Axel Diewald5Mohamad Basim Alabd6Yueheng Li7Mario Pauli8Thomas Zwick9Institute of Radio Frequency Engineering and Electronics (IHE), Karlsruhe Institute of Technology (KIT), 76131 Karlsruhe, GermanyInstitute of Radio Frequency Engineering and Electronics (IHE), Karlsruhe Institute of Technology (KIT), 76131 Karlsruhe, GermanyInstitute of Radio Frequency Engineering and Electronics (IHE), Karlsruhe Institute of Technology (KIT), 76131 Karlsruhe, GermanyInstitute of Radio Frequency Engineering and Electronics (IHE), Karlsruhe Institute of Technology (KIT), 76131 Karlsruhe, GermanyInstitute of Radio Frequency Engineering and Electronics (IHE), Karlsruhe Institute of Technology (KIT), 76131 Karlsruhe, GermanyInstitute of Radio Frequency Engineering and Electronics (IHE), Karlsruhe Institute of Technology (KIT), 76131 Karlsruhe, GermanyInstitute of Radio Frequency Engineering and Electronics (IHE), Karlsruhe Institute of Technology (KIT), 76131 Karlsruhe, GermanyInstitute of Radio Frequency Engineering and Electronics (IHE), Karlsruhe Institute of Technology (KIT), 76131 Karlsruhe, GermanyInstitute of Radio Frequency Engineering and Electronics (IHE), Karlsruhe Institute of Technology (KIT), 76131 Karlsruhe, GermanyInstitute of Radio Frequency Engineering and Electronics (IHE), Karlsruhe Institute of Technology (KIT), 76131 Karlsruhe, GermanyIn the context of all-digital radar systems, phase-modulated continuous wave (PMCW) based on pseudorandom binary sequences (PRBSs) appears to be a prominent candidate modulation scheme for applications such as autonomous driving. Among the reasons for its candidacy are its simplified transmitter architecture and lower linearity requirements (e.g., compared to orthogonal-frequency division multiplexing radars), as well as its high velocity unambiguity and multiple-input multiple-output operation capability, all of which are characteristic of digital radars. For appropriate operation of a PMCW radar, choosing a PRBS whose periodic autocorrelation function (PACF) has low sidelobes and high robustness to Doppler shifts is paramount. In this sense, this article performs an analysis of Doppler shift tolerance of the PACFs of typically adopted PRBSs in PMCW radar systems supported by simulation and measurement results. To accurately measure the Doppler-shift-induced degradation of PACFs, peak power loss ratio (PPLR), peak sidelobe level ratio (PSLR), and integrated-sidelobe level ratio (ISLR) were used as metrics. Furthermore, to account for effects on targets whose ranges are not multiples of the range resolution, oversampled PACFs are analyzed.https://www.mdpi.com/1424-8220/22/9/3212Doppler shiftperiodic autocorrelation functionphase-modulated continuous wavepseudorandom sequenceradar |
| spellingShingle | Lucas Giroto de Oliveira Theresa Antes Benjamin Nuss Elizabeth Bekker Akanksha Bhutani Axel Diewald Mohamad Basim Alabd Yueheng Li Mario Pauli Thomas Zwick Doppler Shift Tolerance of Typical Pseudorandom Binary Sequences in PMCW Radar Sensors Doppler shift periodic autocorrelation function phase-modulated continuous wave pseudorandom sequence radar |
| title | Doppler Shift Tolerance of Typical Pseudorandom Binary Sequences in PMCW Radar |
| title_full | Doppler Shift Tolerance of Typical Pseudorandom Binary Sequences in PMCW Radar |
| title_fullStr | Doppler Shift Tolerance of Typical Pseudorandom Binary Sequences in PMCW Radar |
| title_full_unstemmed | Doppler Shift Tolerance of Typical Pseudorandom Binary Sequences in PMCW Radar |
| title_short | Doppler Shift Tolerance of Typical Pseudorandom Binary Sequences in PMCW Radar |
| title_sort | doppler shift tolerance of typical pseudorandom binary sequences in pmcw radar |
| topic | Doppler shift periodic autocorrelation function phase-modulated continuous wave pseudorandom sequence radar |
| url | https://www.mdpi.com/1424-8220/22/9/3212 |
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