Users Manual

Specifications
9-14
(1.3) Indication about the positioning system and the quality type
1) Indication for GGA sentence
QI Description
Operating
state
Quality
valid invalid
0 Fix not available or invalid INVALID ●
1 GPS SPS (Standard Positioning Service) mode STD GPS ●
2 Differential GPS, SPS mode STD DGPS ●
3 GPS PPS (Precise Positioning Service) mode PREC GPS ●
4 Real Time Kinematic mode RTK GPS ●
5 Float RTK mode FRTK GPS ●
6 Estimated (dead reckoning) mode GPS @EST ●
7 Manual input mode GPS @MAN ●
8 Simulator mode GPS @SIM ●
When receiving the GGA sentence, the quality type is checked using the Quality Indicator (QI)
as mentioned in the table above.
- If the quality is valid, the operating state is indicated with the position and time information.
- If the quality is invalid, the next GNS sentence is referred.
2) Indication for GNS sentence
Device
MI Description
Operating
state
Quality
valid invalid
GPS A Autonomous STD GPS ●
D Differential STD DGPS ●
E Estimated (dead reckoning) mode GPS @EST ●
F Float Real Time Kinematic FRTK GPS ●
M Manual input mode GPS @MAN ●
N No fix INVALID ●
P Precise Positioning Service PREC GPS ●
R Real Time Kinematic RTK GPS ●
S Simulator mode GPS @SIM ●
GLONASS A Autonomous STD GLO ●
D Differential STD DGLO ●
E Estimated (dead reckoning) mode GLO @EST ●
F Float Real Time Kinematic FRTK GLO ●
M Manual input mode GLO @MAN ●
N No fix INVALID ●
P Precise Positioning Service PREC GLO ●
R Real Time Kinematic RTK GLO ●
S Simulator mode GLO @SIM ●
Galileo A Autonomous STD GAL ●
D Differential STD DGAL ●
E Estimated (dead reckoning) mode GAL @EST ●
F Float Real Time Kinematic FRTK GAL ●
M Manual input mode GAL @MAN ●
N No fix INVALID ●
P Precise Positioning Service PREC GAL ●
R Real Time Kinematic RTK GAL ●
S Simulator mode GAL @SIM ●
Others A Autonomous STD OTH ●
D Differential STD DOTH ●
E Estimated (dead reckoning) mode OTH @EST ●
F Float Real Time Kinematic FRTK OTH ●
M Manual input mode OTH @MAN ●
N No fix INVALID ●
P Precise Positioning Service PREC OTH ●
R Real Time Kinematic RTK OTH ●
S Simulator mode OTH @SIM ●
When receiving the GNS sentence, and if the Navigational status in that sentence is S (Safe), the
quality type is checked using the Mode Indicator (MI) as mentioned in the table above.
- If the quality is valid, the operating state is indicated with the position and time information.
- If the quality is invalid, or the Navigational status is C (Caution), U (Unsafe) or V (Not valid),
the next GLL sentence is referred.
Note
Note