Cable sensors monitoring method and system

A method for determining a health of an individual sensor, within a plurality of individual sensors that are wired together to form a receiver point, which produces a single trace, and the plurality of individual sensors are distributed along and within a cable, the method comprising:

• receiving positions of the plurality of individual sensors along the cable;
• recording the trace associated with measured plural signals from the plurality of individual sensors, as an external device moves along the cable, past the individual sensor;
• and
• determining a health status of the individual sensor of the plurality of individual sensors by identifying a signature SI of the individual sensor in the recorded trace,
• wherein the external device emits a noise when moving along the cable, and the noise is detectable only by the individual sensor of the receiver point when the external device is located over the individual sensor.