| 摘要 |
The invention relates to a method and an apparatus for transmitting information and locating mobiles, the links between the mobiles being effected according to the so-called direct-sequence spread-spectrum technique and each mobile (1, 2, 3) including: - a transmitter (10) which receives a first datum (11) and generates this same coded datum (12) by modulation and coding with a spreading code, - a receiver (23, 33) which receives this coded datum (12) and restores the initial datum (11) by demodulation and correlation with the spreading code, - a responder (24) which receives a second datum (18) and generates this same coded datum (16) by modulation and coding with the spreading code, - a receiver (15, 35) for locating which receives this coded datum (16) and restores the initial datum (18) by demodulation and correlation with the spreading code, and which formulates a range datum (19, 39) by comparing the phase delay of the spreading code associated with the second datum received (16) with the spreading code coding the first datum. <IMAGE>
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