DETERMINATION OF THE SIGNAL FREQUENCY INSTABILITY OF EMERGENCY POSITION-INDICATING RADIO BEACONS

To determine the coordinates of distressed vessels, the COSPAS SARSAT system measures the Doppler shift in the frequency of signals received by low polar-orbit satellites from automatic radio beacons (ARBs) activated at the site of the disaster. ARBs developed specially for the COSPAS system operate at 406.025 MHz, in the pulse mode. The design and operation of the automated computer system that measures the parameters of signal frequency instability of ARBs operating in the pulse mode are described. A block diagram of the computer system is also shown.

• Supplemental Notes:
  • Journal article; DTIC distribution restrictions apply
• Authors:
  • Yermolenko, I A
  • Pavlov, K P
• Publication Date: 1989

Media Info

• Features: References;
• Pagination: 5 p.
• Serial:
  • Sudostroyeniye (Soviet Shipbuilding) [USSR], Issue 11, 1988 (Translated by U.S. Naval Technical Intelligence Center, April 1989)
  • Issue Number: 0

Subject/Index Terms

• TRT Terms: Mechanical stability; Microcomputers; Radio frequency; Signal generators; Translations
• Geographic Terms: Former Soviet Union
• Old TRIS Terms: Epirbs; Radio frequencies
• Subject Areas: Data and Information Technology; Marine Transportation;

Filing Info

• Accession Number: 00657656
• Record Type: Publication
• Source Agency: Maritime Technical Information Facility
• Files: TRIS
• Created Date: Jul 21 1994 12:00AM