RELATIVE POSITIONING DEVICE, RELATIVE POSITIONING METHOD, AND PROGRAM

PROBLEM TO BE SOLVED: To solve the problem of being unable to acquire a relative position between terminals with high accuracy.SOLUTION: A relative position between terminals can be acquired with high accuracy by a relative positioning deice. The relative positioning device includes: an own terminal information group acquisition part for acquiring an own terminal information group including an own terminal measurement pseudo distance being pseudo distance between an own terminal and each satellite by using a satellite signal in each of received two or more satellites; an own terminal information group transmission part for transmitting the own terminal information group; a different terminal information group reception part for receiving a different terminal information group including a different terminal measurement pseudo distance being a pseudo distance between a different terminal and each satellite; a correlation determination part for determining whether a correlation is high about one common satellite between two common satellites by using the own terminal measurement pseudo distance and the different terminal measurement pseudo distance of the two common satellites, and an own terminal estimated distance and a different terminal estimated distance between the two common satellites and the own terminal; a relative position acquisition part for acquiring a relative position between the own terminal and the different terminal by using an own terminal satellite information group and a different terminal satellite information group of one or more satellites having a high correlation; and an output part for outputting the relative position.