1. An imaging system comprising: a management server, wherein the management server stores a table indicating a correspondence between one or more wireless tag IDs, one or more photographic targets, and a plurality of single movable bodies, wherein each single movable body is assigned to monitor at least one of the one or more photographic targets prior to receiving an imaging request; and a single movable body of the plurality of single movable bodies capable of moving in one or more dimensions configured to communicate with the management server, wherein the management server comprises: an imaging instruction unit configured to: refer to the table when the imaging request designating a photographic target is received from a user terminal; identify the one or more wireless tag IDs corresponding to the photographic target; identify the single movable body assigned to the photographic target using identification information corresponding to the photographic target; and transmit the one or more wireless tag IDs to the single movable body; and an image providing unit configured to associate and store the one or more wireless tag IDs and an image of the photographic target received from the single movable body; wherein the single movable body comprises: at least one wireless tag reader configured to read a wireless tag ID from a wireless tag through wireless communication; a position estimating unit configured to estimate a position of the photographic target based on a radio field intensity of wireless communication with the wireless tag having the wireless tag ID of the photographic target; an imaging unit configured to take the image of the photographic target; and a movement control unit configured to control movement of the single movable body in one or more dimensions based on inputs from the position estimating unit.