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  • 3.4.2. Interpreting NMEA messages

3.4.2. Interpreting NMEA messagesΒΆ

This section shows the NMEA messages used for accurate heading on various ships. It is useful to be able to inspect the NMEA messages directly, to see the failure in the QA messages

  • 3.4.2.1. Ashtech NMEA messages
    • 3.4.2.1.1. $PASHR,ATT messages
    • 3.4.2.1.2. $PASHR,AT2 messages
    • 3.4.2.1.3. $GPPAT messages
    • 3.4.2.1.4. Indications of bad data:
    • 3.4.2.1.5. checking on UHDAS computer
  • 3.4.2.2. Seapath NMEA messages
    • 3.4.2.2.1. $PSXN,20 messages
  • 3.4.2.3. POSMV NMEA messages
    • 3.4.2.3.1. $PASHR message
  • 3.4.2.4. MAHRS messages
    • 3.4.2.4.1. TSS1 message
    • 3.4.2.4.2. Interpreting the Status Flag
CODAS+UHDAS Documentation

Home

  • 1. CODAS Installation
  • 2. CODAS ADCP Processing
  • 3. UHDAS Operations
    • 3.1. Using UHDAS at sea (for scientists)
    • 3.2. Running UHDAS at sea (for technicians)
    • 3.3. Monitoring the System
    • 3.4. Troubleshooting
      • 3.4.1. Troubleshooting Serial Feeds (beware ZMQ)
      • 3.4.2. Interpreting Accurate Heading NMEA messages
      • 3.4.3. Troubleshooting Speedlog
      • 3.4.4. NTP diagnostics
      • 3.4.5. Hopelessly Confused message
      • 3.4.6. Gui is Hung?
      • 3.4.7. Diagnostic tools
    • 3.5. HOWTOs
    • 3.6. UHDAS Computer
  • 4. ADCP Data: Examples
  • 5. Glossary
  • 6. Acknowledgements
  • 7. Appendix

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  • 3.4.2. Interpreting NMEA messages
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