OMRON developed a new vehicle tracking unit intended for incorporation into a vehicle trajectory tracking system. This new unit employs a sensor which uses laser light (semiconductor laser) as its sensing medium and can track the trajectories of one or more running vehicles in real time with its functions such as scanning a wide range of area on a road with laser light from the laser head of the unit and identifying one and the same vehicle from multiple vehicle position data collected from the head within unit time. This paper describes the hardware configuration and functions of the vehicle-tracking unit, the results of testing on the laser head of the unit to verify its distance measurement accuracy, and its application to other systems.
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