Accession Number:

ADA513705

Title:

AIS Analysis "Results" and AIS Standards Activities

Descriptive Note:

Briefing charts

Corporate Author:

COAST GUARD RESEARCH AND DEVELOPMENT CENTER GROTON CT

Personal Author(s):

Report Date:

2008-09-04

Pagination or Media Count:

42.0

Abstract:

AIS Valid Position Reports are 18 bytes when transmitted from the ORBCOMM satellites to the ground infrastructure. They contain the information as noted in the ITU-R M.1371 documentation as follows Message ID Repeat Indicator User ID MMSI Navigational Status Rate of Turn Speed Over Ground Position Accuracy Longitude Latitude Course Over Ground True Heading Time Stamp The final four fields as noted in the ITU-R M.1371 documentation are not used they are Special maneuver indicator 2 bits Spare 3 bits RAIM Flag 1 bit Communication State 19 bits

Subject Categories:

  • Military Operations, Strategy and Tactics
  • Direction Finding
  • Underwater and Marine Navigation and Guidance
  • Unmanned Spacecraft
  • Radio Communications
  • Command, Control and Communications Systems

Distribution Statement:

APPROVED FOR PUBLIC RELEASE