Underwater Communications System for Use by Free Swimming Divers.

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Abstract:

The need for a compact, reliable, and inexpensive communications system for untethered SCUBA divers is pointed out as being acute. An investigation into various characteristics of the undersea medium leads to the choice of a 40 kHz acoustic carrier, frequency modulated by plain voice, as the optimal approach. Investigations into microphone, earphone, and physiological problems encountered in the divers environment are reported. A communication system, given the acronym DUCS-I Divers Underwater Communication System is designed, built, analyzed and tested. Recommendations are provided for future improvements to the system prior to its proposed implementation into all phases of U.S. Navy free swimmer diving operations.

Author(s):
Steere, David Campbell
Author Organization(s):
NAVAL POSTGRADUATE SCHOOL MONTEREY CALIF
Descriptive Note:
Master's thesis,
Pagination:
0124

Security Markings

DOCUMENT & CONTEXTUAL SUMMARY

Distribution:
Approved For Public Release

RECORD

Collection: TR
Subject Terms
Joint Capability Areas:
JCA_6.1_Information Transport; JCA_6_Net Centric
Communities of Interest:
No COI(s) Identified
Descriptor(s):
*UNDERWATER COMMUNICATIONS, FREQUENCY MODULATION, THESES, TRANSDUCERS, UNDERWATER SOUND, ULTRASONIC FREQUENCIES, SCUBA DIVERS, UNDERWATER SOUND EQUIPMENT
Field(s)/Group(s):
Non-Radio Communications
Report Date:
1975 Jun 01