A system having flying objects, each of which includes: a beacon signal transmission unit for wirelessly transmitting a beacon signal including rank information representing the flying object is at, a first rank when wirelessly connected with a gateway, a second rank when wirelessly connected with a flying object at the first rank, and a third rank when wirelessly connected with a flying object at the second rank; a flying object identification unit for identifying, when wirelessly connected with any flying object among the flying objects, flying objects from which strength of a radio wave received is stronger than threshold; and a flying object determination unit for determining a flying object with which wireless connection is to be performed, from the identified flying objects and based on the strength of radio wave received from each of the flying objects and a rank of the each of the flying objects, is provided.