Location tracking system and method

A positioning system and method is disclosed. Positioning system according to the present invention comprises a plurality of tags to output a second signal in response to the first signal; Reader for transmitting a first signal to the tag, and receives the second signal, identifies the ID of the tag from the second signal; And storing the location of the tag, and is characterized in that it comprises a data processing system that determines the position of the reader from the tag ID received from the reader on the basis of the location of the stored tag.