Method and arrangement for performing positioning
First Claim
1. A method 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 direction finding stations, the method comprising:
- maintaining on a server information on the location of each mobile station;
measuring in a mobile station at least one variable proportional to the location of the mobile station in the vertical direction;
signalling information from the mobile station to a control unit on the measurement results time-divisionally at the same frequency controlled by the control unit;
determining in the control unit the location of each mobile station in the vertical direction on the basis of the signalled data; and
transmitting the data on the location to the server;
determining the three-dimensional location of the mobile stations in the server;
displaying the location of at least some of the mobile stations graphically.
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Accused Products
Abstract
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.
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Citations
26 Claims
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1. A method 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 direction finding stations, the method comprising:
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maintaining on a server information on the location of each mobile station;
measuring in a mobile station at least one variable proportional to the location of the mobile station in the vertical direction;
signalling information from the mobile station to a control unit on the measurement results time-divisionally at the same frequency controlled by the control unit;
determining in the control unit the location of each mobile station in the vertical direction on the basis of the signalled data; and
transmitting the data on the location to the server;
determining the three-dimensional location of the mobile stations in the server;
displaying the location of at least some of the mobile stations graphically. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. An arrangement for performing positioning, comprising a set of portable mobile stations to be positioned and at least two direction finding stations for determining the location of the mobile stations, in the arrangement the mobile stations being arranged to
measure at least one variable proportional to altitude; -
the arrangement comprising;
a server, which maintains information on the location of each mobile station;
a control unit, which controls the transmission of the mobile stations over a radio path such that the mobile stations signal data to the control unit on the variable proportional to the altitude time-divisionally at the same frequency, the control unit being arranged to determine at which altitude the mobile station is located on the basis of the information signalled by the mobile station and to signal the altitude data to the server, and the server being arranged to determine the three-dimensional locations of the mobile stations on the basis of the direction finding measurement and the altitude information, and the arrangement comprising workstations, which are arranged to display the location of at least some of the mobile stations graphically. - View Dependent Claims (15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26)
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Specification