Comparison of pedestrian reflectivities at 24 and 300 GHz

The Radar Cross Section (RCS) is used to characterize the reflectivity of a target, which is essential for the detection performances of an automotive sensor system. Results of RCS measurements of a child mannequin at 300 GHz are presented for the first time and compared with measurements at the current automotive frequency standards (24 GHz). The RCS range and angular profile measurements of the mannequin are obtained in a controlled environment with the aid of a computer controlled turntable. The potential of low-TeraHertz (low-THz) sensors to measure additional characteristic features of pedestrians and hence enhance pedestrian recognition is also shown.