User Manual

Marine Systems
Aviation Recorders
Rev. 06
Mar . 16/11
165M0014-10
Page 1--21
1.5.1.2 GBS - GNSS Satellite Fault Detection
If this sentence is received from the position source, with Latitude error or Longitude
error specified, the RAIM flag will be set to TRUE. If both are Null or 60 seconds
goes by without a GBS sentence, RAIM flag goes to False
Field Notes
UTC Time of GGA or GNS Ignored
Expected Error in Latitude Check for Null
Expected Error in Longitude Check for Null
Expected Error in Altitude Ignored
ID Number of Most LIkely
Failed Satellite Ignored
Probability of MIssed Detection Ignored
Estimate of Bias in Meters Ignored
Standard Deviation of Bias Estimate Ignored
1.5.1.3 GGA - Global Positioning System Fix Data
Field Notes
UTC of Position UTC Second is used to
indicate Time Stamp
Latitude (2 fields) Used
Longitude (2 fields) Used
GPS Quality Indicator Used
Number of Satellites in Use Ignored
Horizontal Dilution of Precision (HDOP) Ignored
Altitude RE: Main Sea Level (2 fields) Ignored
Geoidal Separation (2 fields) Ignored
Age of Diff Data Ignored
Diff Reference Station Ignored
1.5.1.4 GLL - Geographic Position - Latitude / Longitude
Field Notes
Latitude (2 fields) Used
Longitude (2 fields) Used
UTC of Position UTC Second is used to
indicate Time Stamp
Status Used
Mode Indicator Used