A SMALL VESSEL SURVEILLANCE AND RENDEZVOUS SYSTEM

Considered is the problem of small-vessel surveillance within a 30 mm radius. Such information would allow quick vessel assistance and position advisory under all weather conditions. A minimum data rate of 10 vessels per minute is desired, with positive vessel identification and Loran-C accuracy. The system discussed employs low cost user equipment based on existing VHF-FM transceiver and crystal reference. Adequate performance is achieved through the use of Loran spectra compression prior to retransmission, coupled with a high-speed parallel estimator algorithm for cycle ambiguity reduction. A data link provides for AGC control as well as entry and addressing. A performance analysis is carried out for the major system components. Lastly, overall performance is computer for high and low-altitude search vehicles at various locations within East Coast Loran-C coverage.

• Supplemental Notes:
  • Presented at the National Marine Navigation Meeting, Maritime Institute of Technology and Graduate Studies, Linthicum Heights, Maryland, October 31-November 1, 1977.
• Corporate Authors:

  Institute of Navigation

  815 14th Street, NW
  Washington, DC  United States  20005
• Authors:
  • Sennott, J W
• Publication Date: 1977

Media Info

• Features: References;
• Pagination: p. 42-46
• Serial:
  • Publication of: American Concrete Institute
  • Publisher: American Concrete Institute (ACI)

Subject/Index Terms

• TRT Terms: Loran C; Navigation devices; Position fixing; Radar; Radar tracking; Search and rescue operations; Surveillance; Tracking systems; Very high frequency
• Old TRIS Terms: Navigation equipment; Position finding; Vhf communications
• Subject Areas: Marine Transportation; Operations and Traffic Management;

Filing Info

• Accession Number: 00170500
• Record Type: Publication
• Source Agency: Institute of Navigation
• Files: TRIS
• Created Date: Mar 14 1978 12:00AM