| 摘要 |
<p>The method involves arranging two transmitters (3, 5) at an equal spacing (A) to a checkpoint (7) such that a local position of the checkpoint is determined by a straight line connecting the transmitters. Two messages with identical signal strengths are repeatedly transmitted through the checkpoint from the two transmitters, respectively. The signal strengths are combined to determine the total signal strength, and the total signal strength is compared with reference signal strength to determine a passing time of the message through the checkpoint. An independent claim is also included for an arrangement for detecting the passage times of participants at a sporting event, comprising a transponder.</p> |
