POSITION ESTIMATION SYSTEM AND POSITION ESTIMATION METHOD

A position estimation system () includes: a plurality of fixed stations (-) installed inside a building, the plurality of fixed stations (-) each measuring the signal strength of a radio signal transmitted from a mobile object (); and a calculator configured to estimate a position of the mobile object () based on the signal strengths measured at the plurality of fixed stations (-), wherein each of the plurality of fixed stations (-) is installed in such a position that a distance to a top part of the mobile object () is equal to or less than a predetermined distance when the mobile object () is directly below the fixed station (-).