| 摘要 |
The invention concerns methods and devices for determining the position of a mobile object in a plane or space, wherein the mobile object (100) comprises an ultrasonic transmitter (Eu) for transmitting an ultrasonic pulse at an indefinite time, said ultrasonic pulse being respectively received by at least three ultrasonic receivers (Ru1, Ru2, Ru3) or at least four ultrasonic receivers (Ru1, Ru2, Ru3, Ru4) of a fixed receiver unit (RU), with time differences which are taken into account for determining the position of the mobile object (100). |
