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Priority to FI914731ApriorityCriticalpatent/FI94183C/en
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Publication of FI914731ApublicationCriticalpatent/FI914731A/en
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Publication of FI94183CpublicationCriticalpatent/FI94183C/en
Measurement Of Velocity Or Position Using Acoustic Or Ultrasonic Waves
(AREA)
Mobile Radio Communication Systems
(AREA)
Abstract
The invention concerns a method and arrangement for determination of a position. A sound signal and determination of its travel time is used in the invention. According to the invention the position of the mobile transmitter station 3 is measured in relation to a fixed receiver station 4,5,6 by sending a sound signal from a first or transmitter station 3 and by receiving it at each fixed receiver station 4,5,6 and by calculating the position coordinates of the mobile station based on the travel time of the sound signal and the coordinates of the fixed stations. <IMAGE>
FI914731A1991-10-071991-10-07
Method and apparatus for determining a position
FI94183C
(en)