Binary reflectometry system for analyzing faults in a transmission line

A reflectometry system for analyzing faults in a transmission line, a binarized reference signal being generated, in an initial step, and injected into the transmission line, the system comprising:

• an acquisition device (CPL) for acquiring a back-propagated analog signal in the transmission line,
• a binarization device (B) for quantizing said back-propagated analog signal into a signal digitized strictly over two quantization levels,
• a correlator (COR) configured for correlating the digitized signal with the binarized reference signal in order to produce a time-domain reflectogram,
• a module for analyzing the time-domain reflectogram in order to identify a presence of faults in the transmission line,
• wherein the correlator (COR) comprises at least one logic circuit implementing an Exclusive NOR logic gate (XNOR);
• wherein the correlator (COR) comprises at least one logic circuit implementing an Exclusive OR logic gate (XOR);
• and
• wherein the correlator (COR) is configured for incrementally calculating a time-domain reflectogram by means of the following steps:
• receive, at a current time i+dK, a measurement of the signal after its propagation in the transmission line, said measurement comprising a number dK of samples, determine a reflectogram Ri+dK at the current time i+dK, starting from a preceding reflectogram Ri calculated at a preceding time i, by carrying out the following operations for each value of the reflectogram:
• add to the preceding reflectogram Ri, a sum of the Exclusive OR operations between a number dK of samples of the measured signals at the preceding time i and a number dK of corresponding samples of the reference signals injected into the transmission line at an injection time i′−dK,
• add to the preceding reflectogram Ri, a sum of the Exclusive NOR operations between a number dK of samples measured at the current time i+dK and a number dK of corresponding samples of the reference signals injected into the transmission line at an injection time i′.

A reflectometry system for analyzing faults in a transmission line, a binarized reference signal being generated, in an initial step, and injected into the transmission line, the system comprising:

• an acquisition device (CPL) for acquiring a back-propagated analog signal in the transmission line,
• a binarization device (B) for quantizing said back-propagated analog signal into a signal digitized strictly over two quantization levels,
• a correlator (COR) configured for correlating the digitized signal with the binarized reference signal in order to produce a time-domain reflectogram,
• a module for analyzing the time-domain reflectogram in order to identify a presence of faults in the transmission line,
• a time derivative or differentiation device disposed upstream of the binarization device (B), and
• a digital time derivative or differentiation device applied to the reference signal before the correlation with the digitized signal.