Abstract

MAVARES F., Pablo J.. Evaluation of a fmcw radar as a teaching tool in the automotive and telecommunications engineering careers. Ingenius [online]. 2021, n.25, pp.70-80. ISSN 1390-860X.  https://doi.org/10.17163/ings.n25.2021.07.

In recent decades, advanced driver-assistance systems (ADAS) have evolved to be available in much of the vehicles manufactured today; it is very important to keep teaching in this area up-to-date. This paper presents a frequency modulated continuous wave radar that works in the 24 GHz ISM band. The purpose of this work is to evaluate its performance and suitability to be used as a didactic tool in teaching in the automotive and telecommunications engi-neering careers with an emphasis on the mathematics and telecommunications subjects, under scenarios feasible to be found in university labs. For this pur-pose, the measurement scenario is described, as well as the hardware, firmware and a generic algorithm implemented in MATLAB based on fast Fourier transforms to obtain Range-Doppler maps that allow, in conjunction with the CFAR algorithm, to improve detection of objects when compared to the detection from a fixed level. The results presented demonstrate that the accuracy and precision of the radar are within the parameters for a short-range radar for vehicles, also finding a tool with great didactic potential with which students can understand today´s applications of mathematics in the field of telecommunications, especially in radars that serve ADAS systems.

Keywords : FMCW radar; Range-Doppler map; CFAR; didactic tool.

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