Format Description of GBAS and SCAT-I Data
R&S
®
EVSG1000
400
User Manual 1178.6227.02 ─ 06
Column
Description
MB ID
Message block ID:
●
1010 1010
: normal LAAS message (GBAS)
●
1111 1111
: test LAAS message (GBAS)
Stat ID
Received Station ID, equivalent to GBAS ID or SCAT ID
MsgLen[byte]
Z-Cnt[m:s]
Add.Msg.Flag
NrOfMeasn
MeasnType
EphDecorPar[m/m]
EphemCrcMSB
EphemCrcLSB
SrcAvailDur[sec]
SatID
IOD
PRC[m]
RRCor[m/s]
S_pr_gnd[m]
DiffnprcB1[m]
DiffnprcB2[m]
DiffnprcB3[m]
DiffnprcB4[m]
For details on the correction data parameters, refer to the GBAS specification [1].
MT4
If the slot contains a message type 4, the following decoded message data is provided
for each of the up to 15 FASDBs (in "full" list only):
Table D-3: Decoded message type 4 data for the individual slot and each FASDB (GBAS)
Column
Description
MT4 GBAS
Section label (separator in list)
MB CRC
MB ID
Message block ID:
●
1010 1010
: normal LAAS message (GBAS)
●
1111 1111
: test LAAS message (GBAS)
Stat ID
Received Station ID, equivalent to GBAS ID or SCAT ID
MsgLen[byte]