Method and apparatus for detecting the location of a marine...

Details Method and apparatus for detecting the location of a marine... Method and apparatus for detecting the location of a marine...

G - Physics

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G01S 15/88 (2006.01) G01S 7/62 (2006.01) G01S 15/06 (2006.01) G01S 15/87 (2006.01) G01V 1/34 (2006.01) G01V 1/38 (2006.01)

Patent

CA 1136256

A B S T R A C T To detect the location of a marine pipeline or a cable by means of a vessel, acoustic pulses are trans- mitted by a submarine pulse transmitter carried by the vessel. These pulses, as well as the reflections of the pulses on the seabottom and on the pipeline or cable are detected by means of two detectors that are carried by two paravanes towed by the vessel. The signals received by the detectors are combined and the record of the combined signals is displayed. The signal parts that are represen- tative for the acoustic waves reflected by the pipeline are identified in the record by separate colours or various intensities of a single colour.

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