Gbs - Gnss Satellite Fault Detection; Gga - Global Positioning System Fix Data; Gll - Geographic Position - Latitude / Longitude - L3 Communications ProTec AISD1000-00 Installation And Operation Manual

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
UTC Time of GGA or GNS
Expected Error in Latitude
Expected Error in Longitude
Expected Error in Altitude
ID Number of Most LIkely
Failed Satellite
Probability of MIssed Detection
Estimate of Bias in Meters
Standard Deviation of Bias Estimate
1.5.1.3

GGA - Global Positioning System Fix Data

Field
UTC of Position
Latitude (2 fields)
Longitude (2 fields)
GPS Quality Indicator
Number of Satellites in Use
Horizontal Dilution of Precision (HDOP)
Altitude RE: Main Sea Level (2 fields)
Geoidal Separation (2 fields)
Age of Diff Data
Diff Reference Station
1.5.1.4

GLL - Geographic Position - Latitude / Longitude

Field
Latitude (2 fields)
Longitude (2 fields)
UTC of Position
Status
Mode Indicator
Initial Issue
Page 1–20
Aviation Recorders
Marine Systems
Notes
Ignored
Check for Null
Check for Null
Ignored
Ignored
Ignored
Ignored
Ignored
Notes
UTC Second is used to
indicate Time Stamp
Used
Used
Used
Ignored
Ignored
Ignored
Ignored
Ignored
Ignored
Notes
Used
Used
UTC Second is used to
indicate Time Stamp
Used
Used
165M0601-00
Feb. 01/05