Learning data generation method, learning data generation device and learning data generation program

According to the present invention, learning data, which is required for additionally training a learnt model of artificial intelligence to be used for identifying an aircraft, can be efficiently generated. A learning data generation method according to one aspect includes: an acquisition step S10 for acquiring two pieces of data among appearance data of an aircraft on an image obtained by imaging a specific path, signal data of radio waves transmitted from the aircraft on the path, and noise data that indicates a noise from the aircraft on the path; an identification step S20 in which the attributes of the aircraft on the path are identified by inputting one among the two acquired pieces of data to a first identification model for identifying the attributes of an aircraft; and a generation step S30 which generates learning data to be used for learning a second identification model for identifying the attributes of an aircraft by associating the other among the two acquired pieces of data and the attributes of the aircraft on the path, which has been identified in the identification step.