Principal of the Three-Cable Method for Compensation of Cable Variations

Author: Doren W. Hess

A novel technique has been devised that permits a length of cable to be measured in place and its transfer characteristic monitored as motion occurs. The scheme is to measure the cable in transmission as a member of a pair and to infer the characteristic of the cable from a set of three pair-wise measurements, in analogy to the well-known three-antenna technique. From the resulting knowledge of the signal cable’s characteristic one can correct the measured data to account for the changes in the cable through which the signal of interest was passed.

 

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