| 摘要 |
Temporal reflectometry system (501) for unambiguously locating at least one singularity in a cable (503), characterized in that it comprises means (511) for analysing and calculating reflectometry signals adapted so as to generate two injection signals fAlpha, fB from at least one reflectometry signal s(t), two digital-analogue converters (512, 513) for converting said digital signals fA(n), fB(n) into analogue signals fA(t), fB(t), two means (518, 519) for coupling and transmitting said signals fA(t), fB(t) at two distinct points (A, B) of said cable (503), at least one analogue-digital converter (514, 515) for converting the signal reflected on said singularity and received by said coupling and transmission means (518, 519), said analysis and calculation means (511) being moreover adapted for receiving and analysing said reflected signal, converted digitally, so as to produce a temporal reflectogram, said signals fA(n), fB(n) being constructed in such a way that the signal propagating on one side of said cable (503) is equal to said reflectometry signal s(t) and the signal propagating on the other side of said cable (503) is substantially zero. |
