Lane-by-Lane Traffic Monitoring Using 24.1 GHz FMCW Radar System

Hae-Seung Lim,Jae-Eun Lee,Seongwook Lee,Yong-Hwa Kim,Hyung-Min Park

doi:10.1109/access.2021.3052876

Abstract

In this article, we propose a method to monitor traffic on the road using a 24.1 GHz radar system. In our work, we design our own traffic monitoring radar system from radar hardware, such as antenna systems and the transceiver, to radar software, such as detection and tracking algorithms. The radar we developed uses frequency-modulated continuous waveforms with a center frequency of 24.1 GHz, and its range resolution is tens of centimeters, which is enough to distinguish vehicles in multiple lanes. In addition, we can effectively distinguish vehicles by estimating their angles using an array antenna system. To evaluate the performance of our radar, we install it on the pedestrian overpass facing the road. From actual measurement results, our radar system can reliably estimate the distance to the vehicle, the speed of the vehicle, and the angle of the vehicle for a total of four lanes up to 300 m in real time. The traffic monitoring system using a radar sensor can compensate for the disadvantages of the camera-based road monitoring method.

Highlights

One of the prerequisites for building an intelligent transportation system is the measurement of road traffic
MEASUREMENT ENVIRONMENTS To verify the detection and tracking performance of our radar system, we installed the traffic monitoring radar on and PD is the probability of the target detection
From the actual measurement results, it was confirmed that our radar system accurately estimated the positions and the velocities of vehicles moving in four lanes

Summary

INTRODUCTION

One of the prerequisites for building an intelligent transportation system is the measurement of road traffic. The global system for mobile communications (GSM)-based passive radar to monitor the road traffic was introduced in [6], [7] They suggested that they could detect the speed of the vehicle using a GSM-based radar, but they did not consider estimating the distance to the target at all. In [10], the authors presented a method for estimating range, speed, and angle information of vehicles using a 35 GHz interferometric linear frequency-modulated continuous wave (FMCW) radar. The radar system we designed can accurately estimate range, velocity, and angle information of targets and effectively track targets in four different lanes on the highway.

TRAFFIC MONITORING

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CONCLUSION