Accession Number:

AD0891210

Title:

Position-Determining System for Sea-Spider Hydrophone Arrays

Descriptive Note:

Final rept.

Corporate Author:

NAVAL RESEARCH LAB WASHINGTON DC

Personal Author(s):

Report Date:

1971-12-30

Pagination or Media Count:

69.0

Abstract:

An electronic system has been developed which is capable of measuring the elapsed travel time for three acoustic sources to any one of 12, 24, 36 hydrophones. Though it was developed and configured for the Pacific Sea-Spider array, it is applicable, with modifications, for determining the position of 12 hydrophones relative to three sources in known positions. Pacific Sea-Spider was a trilegged, moored, subsurface array of 30 hydrophones. It had three acoustic sources, one near each anchor point. The position-determining system developed for this array includes control logic to select any of five sets of 12 hydrophones and a single source, a crystal-controlled clock to measure the travel time, 12 level and phase detectors to determine reception of the acoustic signal and to command time transfer, a storage register with jam transfer of the time data, and output logic to control a paper-tape punch for data output. Author

Subject Categories:

  • Marine Engineering

Distribution Statement:

APPROVED FOR PUBLIC RELEASE