| 摘要 |
<p>Asynchronous system for estimating position of persons and/or objects, which relies on reception of radio signals from at least three ground stations, characterized in that each ground station (S1, S2, S3) features a circuit for transmitting radio signals conveying i.a. its geographic coordinates, and each of these ground stations (S1, S2, S3) features a circuit for receiving signals from at least two stations within radio range and a circuit for measuring and distributing propagation time between these ground stations (S1,S2,S3).A person and/or object (M) is equipped with a circuit for receiving signals conveying geographical coordinates of ground stations (S1,S2,S3) which interacts with a circuit for measuring propagation time between ground stations (S1,S2,S3)and this person and/or object (M).</p> |
