| 摘要 |
<p>The inventive device comprises a first transmitter transmitting a modulated wave whose modulation forms are known, and a second transmitter for re-transmitting the signal transmitted by the first transmitter after a delay (R); the first transmitter comprises a processor which is configured in such a way that it can make a comparison between the form of the retransmitted signal when it is modulated and the form of the initial translated modulation in order to determine the time period (TR - rl) occurring between transmission of the signal and reception of the signal and reception of the retransmitted signal, and in order to calculate the distance between the two transmitters from said time period (TR - rI).</p> |
