Research for indoor-outdoor positioning system for physical distribution

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We took notice of the PHS positioning service used practically in the field of logistics and a method for raising the precision of the PHS positioning method was devised; then the positioning system using PHS and a radio beacon was developed and evaluated. The loss and theft of distribution equipment that is stored for a long period of time or shared equipment is a growing problem. To prevent this, an equipment management method that uses a public wireless network positioning system and a method for recording the movement status of transportation equipment that uses accelerometers was devised. The validity of the system was then verified.