Precise positioning systems for Vehicular Ad-Hoc Networks

TL;DR

This paper proposes alternative positioning techniques for VANETs that improve accuracy in GPS-challenged environments like tunnels and urban areas, ensuring reliable real-time vehicle location data.

Contribution

It introduces novel positioning methods that enhance accuracy and continuity in GPS-denied environments for VANETs, addressing a critical limitation of current systems.

Findings

Significant accuracy improvements demonstrated in experiments

Enhanced positioning continuity when combined with DGPS

Effective in tunnels, undergrounds, and urban canyons

Abstract

Vehicular Ad Hoc Networks (VANET) is a very promising research venue that can offers many useful and critical applications including the safety applications. Most of these applications require that each vehicle knows precisely its current position in real time. GPS is the most common positioning technique for VANET. However, it is not accurate. Moreover, the GPS signals cannot be received in the tunnels, undergrounds, or near tall buildings. Thus, no positioning service can be obtained in these locations. Even if the Deferential GPS (DGPS) can provide high accuracy, but still no GPS converge in these locations. In this paper, we provide positioning techniques for VANET that can provide accurate positioning service in the areas where GPS signals are hindered by the obstacles. Experimental results show significant improvement in the accuracy. This allows when combined with DGPS the continuity of a precise positioning service that can be used by most of the VANET applications.