Accession Number:

ADA023841

Title:

Development of a Distress Alerting and Locating System (DALS).

Descriptive Note:

Final rept. Jul 73-Jan 75,

Corporate Author:

COAST GUARD RESEARCH AND DEVELOPMENT CENTER GROTON CONN

Personal Author(s):

Report Date:

1975-11-01

Pagination or Media Count:

97.0

Abstract:

An automated method of determining a distressed vessels situation and position could be useful in the U. S. Coast Guards search and rescue mission. Evaluation of commercially available retransmitting equipment, modified for use as a Distress Alerting and Locating System DALS was undertaken to determine its capabilities of automatically locating and identifying a vessel in distress, usefulness as a buoy position monitoring system, and usefulness as a vessel tracking system. The system employs a hand-held radio-navigational signal retransmitting device which, when energized by a recreational boater in time of distress, transmits a distress alerting and identifying signal along with local area navigational aid information to a DALS base station. Provision exists for extension of the operating range of the system through use of a telemetry equipment deployed in a vessel, aircraft or additional shore station. The system can use either Omega or LORAN-C navigational signals, or a combination of inputs from both navigational aids.

Subject Categories:

  • Escape, Rescue and Survival
  • Non-Radio Communications

Distribution Statement:

APPROVED FOR PUBLIC RELEASE