SYSTEM AND METHOD OF DEDUCING LOCATION AND DYNAMICS OF PORTABLE COMPUTER DEVICE

摘要

PROBLEM TO BE SOLVED: To provide a location specifying system for specifying location of a wireless equipment and for deducing motion and a speed thereof. SOLUTION: This method includes direct estimation as to whether the equipment is under a moving condition or a stationary condition, based on statistical analysis of fluctuation in radio signal intensity accompanied to the lapse of time. This system is trained according to a specified position-sporadic set deducing the signal intensity therefrom. The system interpolates a new location of the wireless equipment, using a signal property (characteristic) of the specified position. This system deduces the new location of the equipment, using the specified position on a floor plan, a predicted walking speed of a pedestrian, and the independent estimation as to whether the equipment is under the moving condition or not, using a stochastic graph. COPYRIGHT: (C)2005,JPO&NCIPI