Stream LDM : local dynamic map (LDM) with stream processing technology

概要

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Local Dynamic Map (LDM) has been studied as a key element of Cooperative ITS. The LDM is a hierarchical database that contains high-resolution geographical map information and information on driving-environment recognition sent from vehicle on-board sensors and through vehicle-to-infrastructure/vehicle-to-vehicle communications. When developing applications, especially in the case of safe driving support, high response and small delay are requirements of the LDM design. The current LDM systems based on conventional relational database technology has the problem of obtaining and analyzing data. In this research, we developed "Stream LDM" with stream processing technology to achieve high response. Furthermore, we evaluated and verified Stream LDM using vehicle dynamics models and a vehicle-driving scenario in a simulation environment.