Information processing system, ray tracing method, and program for radio wave propagation simulation

A ray trace method comprising:

• determining a two-dimensional ray trace from a transmission point at which a radio wave is transmitted, to a reception point at which the radio wave is received;
• determining a three-dimensional ray trace corresponding to the two-dimensional ray trace, using height information about the transmission point and the reception point;
• calculating an intensity of the radio wave at the reception point, using one or more three-dimensional ray traces determined;
• and
• determine a diffracted ray in the three-dimensional ray trace with replacing a structural object present between the transmission point and the reception point with a flat metal plate when there is no line of sight in a route between the transmission point and the reception point,
• wherein the determining a two-dimensional ray trade, the determining a three-dimensional ray trance, and the calculating an intensity of the radio wave are performed by an information processing system.

A computer-readable non-transitory recording medium storing a program for causing an information processing system to:

• determine a two-dimensional ray trace from a transmission point at which a radio wave is transmitted, to a reception point at which the radio wave is received;
• determine a three-dimensional ray trace corresponding to the two-dimensional ray trace, using height information about the transmission point and the reception point;
• calculate an intensity of the radio wave at the reception point, using one or more three-dimensional ray traces determined in the second ray tracing process, and
• determine a diffracted ray in the three-dimensional ray trace with replacing a structural object present between the transmission point and the reception point with a flat metal plate when there is no line of sight in a route between the transmission point and the reception point.