Extraction of Scattering Centers Using a Greedy Algorithm for Traffic Participants

Abadpour, Sevda; Diewald, Axel; Nuß, Benjamin; Pauli, Mario; Zwick, Thomas

doi:10.23919/eucap48036.2020.9135316

Cited by 3 publications

(2 citation statements)

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“…In this way, radars can resolve multiple SPs of an object. Accordingly, reflected signals from numerous SPs of various traffic participants can be utilized to generate radar targets in the radar target simulator and subsequently simulate the backscattering behavior of real traffic scenarios [8]. Thus, developing a precise model of the traffic participants, especially VRUs, which includes their backscattering behavior, is a challenge and gained high interest in research and development.…”

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“…Thus, developing a precise model of the traffic participants, especially VRUs, which includes their backscattering behavior, is a challenge and gained high interest in research and development. The implementation of the scattering process into the radar wave propagation simulation can be done in different ways as explained in [8]- [15] in detail and summarized in [8]. Highresolution radar cross section (RCS) measurements in the radial and the angular domain can be used for backscattering models in the wave propagation simulations and thus speed up simulations.…”

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Backscattering Behavior of Vulnerable Road Users Based on High-Resolution RCS Measurements

Abadpour

Marahrens²,

Pauli

et al. 2022

IEEE Trans. Microwave Theory Techn.

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Automotive radars, along with optical sensors such as cameras or lidars, offer a reliable way of obtaining the 3-D information about the environment. Of particular interest in autonomous driving (AD) is the reliable detection of particularly vulnerable road users (VRUs). Modern radar sensors are able to detect, distinguish, and track targets with high resolution. Relying on that, a backscattering model of complex traffic targets can be generated from the reflected signals of their scattering points (SPs). These models can be employed in the radar channel simulations for verification methods of advanced driver assistance systems. Therefore, in this work, different persons as the most vital VRUs are measured with high radial and high angular resolution. The necessary signal processing steps are explained in detail for the determination of the relevant SPs. Thus, the corresponding radar cross section (RCS) values can be assigned to certain body regions. In addition to real persons, further measurements are compared with a dummy of the corresponding size. Based on the measurement results, not only accurate models of road users can be derived, but also the measurement results can be employed for calculating wave propagation in traffic scenarios. From the measured SPs, the classification of the persons by size and stature is derived.

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