TELEMATICS USING PERSONAL MOBILE DEVICES

摘要

An approach to telematics using mobile devices provides battery-efficient trajectory and mileage inference from inaccurate and intermittent location data. Accurate trajectories of how users or vehicles move in the physical world are formed by processing raw position estimates obtained from noisy, inaccurate, and error-prone position sensors on mobile devices, where the position data may also arrive intermittently with long time gaps. The trajectory is formed using the process of map matching, which determines the trajectory on a map that best explains the sequence of position observations.

主权项

1. A method for map-based telematics comprising:
acquiring data representing a sequence of position-related measurements O1, . . . , Ot of a device traveling along segments s of a transportation network; processing data representing the position measurements to form a sequence of segment sets S0, . . . , SD, each segment set being associated with a set of one or more position measurements in the sequence of position measurements; and applying a computer-implemented path forming procedure to form a path set between the segment sets (s0, Sp) including determining a plurality of subsequences of the sequence S0, . . . , SD and forming paths through the determined subsequences; and providing data representation of a characteristic of the traversal of the device based on the formed path set.