Title:
【発明の名称】伝送路
Document Type and Number:
Japanese Patent JPH04506255
Kind Code:
A
Abstract:
A method of detecting or analysing an object or other discontinuity in a medium in the vicinity of a transmission line (1), the discontinuity being such as to cause reflection of a signal transmitted along the transmission line. The method comprises the steps of: (a) transmitting a signal along the transmission line; (b) monitoring the transmission line for any reflections of the signal; (c) generating an analysis window of time (t1, t2, t3) if the magnitude of a given characteristic of the reflected signal is greater than a predetermined threshold value; and (d) analysing the reflected signal received during the period of an analysis window to provide the required information on the discontinuity.
Inventors:
Oswald, Gordon Kenneth Andrew
Utushi, Per Arne Vincent
Ohm, Elizabeth Ann
Lawrence, Thomas William John
Utushi, Per Arne Vincent
Ohm, Elizabeth Ann
Lawrence, Thomas William John
Application Number:
JP50893790A
Publication Date:
October 29, 1992
Filing Date:
June 15, 1990
Export Citation:
Assignee:
Cambridge Consultants Limited
International Classes:
G01R27/06; G01R31/08; G01R31/11; G08B13/24; (IPC1-7): G01R27/06; G01R31/08
Domestic Patent References:
| JPH0197830A | 1989-04-17 | |||
| JPS6228426A | 1987-02-06 |
Attorney, Agent or Firm:
Hisami Fukami (4 outside)