METHOD FOR DETECTING DEFECTS IN NAVIGATION DATA

摘要

A navigation system using a mobile terminal (14), GPS receiver (13), navigation server (15) and navigation software, wherein the navigation software is arranged to detect defects in navigation or driving conditions data. Defects in the navigation or driving conditions data are detected by comparing the actual behavior of the user with the route computed and sug-gested by the navigation software. The difference be-tween the actual route taken by the user and the com-puted route is detected and sent to the navigation server (15). The navigation server (15) then collects statistical information on such locations on the map where users repeatedly choose a different route from the computed route and determines, based on the sta-tistics, the possible defect in the navigation or driving conditions data.