Crowd Counting Measurements in a Festival Area Using a mmWave FMCW Radar

In this paper, we consider the problem of crowd counting using millimeter-wave radars. In contrast to conventional detect-and-track counting schemes, the method operates on a power metric derived from the range-Doppler maps. The system is evaluated at the VIP area in the Tomorrowland 2022 music festival. The analysis is carried out over crowd sizes of 0 to 1500 people, where we measure a 82.9% to 94.2% correlation with the bracelet crowd counting reference obtained from the access control system. The results suggest relative counting errors within
$\pm 50\%$
for small crowds and within
$\pm 25\%$
for large crowds as measured by the 95 % percentile prediction intervals.