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1. (WO1998013700) AUTOMATIC FAULT LOCATION IN CABLING SYSTEMS

Pub. No.:    WO/1998/013700    International Application No.:    PCT/GB1997/002632
Publication Date: Apr 2, 1998 International Filing Date: Sep 26, 1997
IPC: G01M 11/00
G01R 31/11
H04B 10/07
H04B 10/071
H04L 12/26
Applicants: UNIVERSITY OF STRATHCLYDE
SORAGHAN, John, James
SIEW, Wah, Hoon
Inventors: SORAGHAN, John, James
SIEW, Wah, Hoon
Title: AUTOMATIC FAULT LOCATION IN CABLING SYSTEMS
Abstract:
A method and apparatus (12-20, 32) for automatically locating faults in a network of signal carriers (cables) utilises an interrogation waveform which is pulse-like in form and receives composite reflected signals from the carriers which are a time distributed collection of individual reflections. These are sampled and compared using the function of an adaptive filter (52) to minimise the difference signal. The difference signals are analysed to determine significant points of departure which identify the fault location which is then represented as a distance value.