The invention relates to a method and arrangement for positioning one or
more mobile stations, in which the location of the mobile stations is
determined in the horizontal direction using at least two radio direction
finding stations. Information on the location of each mobile station is
maintained on a server. The mobile station measures at least one variable
proportional to the location of the mobile station in the vertical
direction and signals information on the measurement results to a control
unit time-divisionally at the same frequency controlled by the control
unit. In the control unit the location of each mobile station is
determined in the vertical direction on the basis of the signalled data
and the data on the location is conveyed to the server, where the
three-dimensional location of the mobile stations is determined. The
locations of at least some of the mobile stations are displayed
graphically.
