Data warehousing of vehicle trajectory

With the rising number of vehicles equipped with GPS system, a lot of vehicle trajectories are produced every day. At present researchers begin to study the vehicles' trajectory data. But the current trajectory compression technology cannot be very simple and will lose much information. Therefore, this paper puts forward a data warehousing design of vehicle trajectory. It can store compressed vehicle trajectory, simplify the data volume, and save the feature points. Thus, it provides a sound base for finding useful information from vehicle trajectory.