Experimental study on a two-frequency secondary-radar system to detect pedestrians beyond blind corners using large anechoic chamber

Abstract

We investigated a two-frequency secondary radar system to prevent traffic accidents between pedestrians and vehicles at intersections with poor visibility. We measured a ranging property between a vehicle and a pedestrian, and direction detecting property. This paper shows the results of these experiments measured in a large anechoic chamber with a wooden L-shaped wall to emulate an NLOS condition. A measurement error in NLOS was larger than that in LOS. However, it was able to detect a pedestrian in NLOS and the direction of the one.