Real-time positioning and tracking method and system for logistics cargo

Abstract

This invention discloses a real-time location tracking method and system for logistics goods, belonging to the field of wireless positioning technology. The method includes: acquiring location coordinates and collecting motion data in each positioning cycle; encoding the motion data into a motion coding sequence and extracting motion feature vectors from the motion data; calculating a speed estimate for the current positioning cycle based on the location coordinates and the motion coding sequence; generating a predicted location and prediction uncertainty for the goods on the road network based on the speed estimate; when a user initiates a location query, returning the latest predicted location and prediction uncertainty within the current positioning cycle, and executing a corresponding display strategy based on the prediction uncertainty; when new location coordinates are acquired, the current positioning cycle ends; performing road matching based on two adjacent location coordinates using a Hidden Markov Model; and calculating a speed correction factor based on the road matching result. This invention can improve the accuracy of positioning results.

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