Joint beat-spectrum averaging in a multi-frequency MIMO radar approach on a slow-fluctuating object range detection
Radar is widely applied in detecting such as aircrafts, ships and motor vehicles, mainly for security and safety purposes. However, a small object is hard to be detected moreover if it is fluctuating. Meanwhile, utilisation of a multiple-input multiple-output (MIMO) in the radar configuration has...
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| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
Accent Social and Welfare Society
2023
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| Online Access: | http://eprints.utem.edu.my/id/eprint/28363/2/026430304202353.pdf http://eprints.utem.edu.my/id/eprint/28363/ https://accentsjournals.org/paperInfo.php?journalPaperId=1504&countPaper=2151 http://dx.doi.org/10.19101/IJATEE.2022.1010015 |
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| Summary: | Radar is widely applied in detecting such as aircrafts, ships and motor vehicles, mainly for security and safety purposes.
However, a small object is hard to be detected moreover if it is fluctuating. Meanwhile, utilisation of a multiple-input
multiple-output (MIMO) in the radar configuration has been acknowledged in many recent works, benefiting from its
waveform diversity. In this study, various processing schemes for a MIMO frequency modulated continuous waveform
(FMCW) radar were evaluated in detecting a slow-fluctuating object due to water ripples. Employing small and
lightweight commercial-off-the-shelf (COTS) modules, a 2×2 co-located MIMO radar configuration was constructed.
Beat signals received were post-processed in MATLAB, applying a spectrum averaging (SA), beat averaging (BA) and
finally, merging the BA together with SA (BA-SA) schemes. The performance was compared against various averaging
methods for MIMO processing, and a single-input single-output (SISO) configuration. Performance was analysed in
terms of probability of range error, range error means, root mean square error (RMSE) and scattering index (SI). It was
observed that MIMO was performing against SISO, and the combination of BA-SA in MIMO signal processing yielded
the best result in all performance indicators compared to other evaluated schemes. |
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