Multi-Beam Automotive SAR Imaging in Urban Scenarios [article]

Marco Rizzi and Marco Manzoni and Stefano Tebaldini and Andrea Virgilio Monti-Guarnieri and Claudio Maria Prati and Dario Tagliaferri and Monica Nicoli and Ivan Russo and Christian Mazzucco and Simón Tejero Alfageme and Umberto Spagnolini
2021 arXiv   pre-print
Automotive synthetic aperture radar (SAR) systems are rapidly emerging as a candidate technological solution to enable a high-resolution environment mapping for autonomous driving. Compared to lidars and cameras, automotive-legacy radars can work in any weather condition and without an external source of illumination, but are limited in either range or angular resolution. SARs offer a relevant increase in angular resolution, provided that the ego-motion of the radar platform is known along the
more » ... ynthetic aperture. In this paper, we present the results of an experimental campaign aimed at assessing the potential of a multi-beam SAR imaging in an urban scenario, composed of various targets (buildings, cars, pedestrian, etc.), employing a 77 GHz multiple-input multiple-output (MIMO) radar platform based on a mass-market available automotive-grade technology. The results highlight a centimeter-level accuracy of the SAR images in realistic driving conditions, showing the possibility to use a multi-angle focusing approach to detect and discriminate between different targets based on their angular scattering response.
arXiv:2110.14988v1 fatcat:bfxftrt7zjgqtnffhv5cwwz4ge