An object of the present invention is to provide a charging
system which carries out position confirmation of a
moving body at a place where there is a
radio wave blocked facility, and which carries out automatic detection of
GPS antenna blockage for avoiding charging. In a charging
system including a
GPS positioning device 921 for recognizing a vehicle position, a vehicle speed pulse measuring device 920 for
dead reckoning navigating, a monitor device 920, 927, 928 which generates information expressing a current position by using these, and a charging
processing 902 which judges whether or not a recognized current position is within a charge area and which carries out
data processing for charging, the monitor 920 includes a simple map
database 928 which includes positions of facilities or geographical features at which
GPS positioning is impossible, and when
GPS positioning is impossible, the facility or
geographical feature corresponding to the current position is detected, and that position is made to be a current position.