GAPS - User Guide
I.8 GAPS STANDARD ALTITUDE
Definition
GAPS Standard Altitude is identical to GAPS Standard protocol (see appendix I.7) except the
field Transponder Altitude that is added at the end of the protocols PTSAG, PTSAX and
PTSAY. It is the only protocol where the PTSAG is different.
The transponder altitude is computed as described in the picture below:
● Transponder Depth = Z Transponder + GAPS Draft + Heave
● Altitude GAPS = GPS Lever Arm + GPS Altitude
● Transponder Altitude = Altitude GAPS - Z Transponder
MU-GAPS-AN-005-H - November 2019 197