Method for measuring position, non-transitory recording medium storing position measurement program, and radio apparatus

A computer-readable non-transitory recording medium storing a position measurement program, the position measurement program causing a computer to perform a process comprising:

• receiving a radio signal including identification information of a radio apparatus transmitting the radio signal;
• obtaining radio information in which the identification information and a radio field intensity of the radio signal are associated with each other;
• and
• determining a position of a reception apparatus using the obtained radio information,
• wherein the radio apparatus includes an antenna that transmits the radio signal having directivity toward a floor,
• wherein the radio apparatus includes a plurality of radio apparatuses, and
• wherein the determining includes:
• referring to a table in which each of a plurality of points and radio field intensities of radio signals output from the plurality of radio apparatuses at each of the plurality of points are associated with each other in advance, and
• determining the position of the reception apparatus based on the radio field intensities of the plurality of radio apparatuses identified by the identification information included in the radio information and the radio field intensities of the plurality of radio apparatuses at each of the plurality of points read from the table.