Accession Number:

ADD020112

Title:

Fiber Optic Measurement of Towed Array Position

Descriptive Note:

Corporate Author:

DEPARTMENT OF THE NAVY WASHINGTON DC

Personal Author(s):

Report Date:

2004-01-05

Pagination or Media Count:

36.0

Abstract:

A tow cable connectable to an sensor array with Bragg grating sensors embedded in helical-wound armored fibers of the cable. A first grouping of spaced apart sensors are positioned at the connection of the tow cable to the array. Additional groupings of sensors are positioned at predetermined lengths of the cable in which the cable would be held at these lengths to a towed array handling winch. The sensor spacing in the remaining portions of the cable is much larger than that in the sensor groupings. The sensors measure the strain on the tow cable at opposite points of the cable and further measure the shape of the cable by strain-based algorithmic equations, thereby measuring the position of the Bragg grating sensors coincident with the position of a tow array.

Subject Categories:

  • Optical Detection and Detectors
  • Fiber Optics and Integrated Optics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE