Orient ОС-201 [167/244] Sbas24mixed fast corrections long term satellite

Orient ОС-201 [167/244] Sbas24mixed fast corrections long term satellite
COMNAV OEM BOARD REFERENCE MANUAL
Chapter 4. Logs Messages
ComNav Technology Ltd.
148
CNT-OEM-RM001, Rev 1.8
Since it would be impossible to broadcast IGP delays for all possible locations, a mask is
broadcast to define the IGP locations providing the most efficient model of the ionosphere at
the time.
Message ID
981
Recommended Input
log sbas18a ontime 1
Supported Format
ASCII
Reply (ASCII)
#SBAS18A,COM1,0,60.0,FINESTEERING,1863,555684.000,00000000,0000,1114;1
37,3,0,3,0003FFC180FFC0C03FF0001FF00007FC0000FC00003F00000000,0*3F6D65
94
Field#
Field Type
Format
Binary
Byte
Binary
Offset
1
SBAS18 header
H
0
2
PRN
ULong
4
H
3
#bands
Ulong
4
H+4
4
Band Num
Ulong
4
H+8
5
IODI
Ulong
4
H+12
6
IGP mask
Uchar[26]
26+2
H+16
7
spare bit
Ulong
4
H+44
8
xxxx
Hex
4
H+48
9
[CR][LF]
-
-
-
4.2.10.12 SBAS24 Mixed Fast Corrections/Long Term Satellite Error Corrections
Description
This section presents the Type 24 Mixed Fast Correction/Long Term Satellite Error Corrections
Message. The first half of the message consists of six fast data sets according to the PRN mask
sequence, followed by the IODP, a Block ID indicating which corrections block is provided, and
the IODF. The Block ID (0, 1, 2, 3) will indicate whether the Type 24 message contains the fast
corrections associated with a Type 2, Type 3, Type 4, or Type 5 message, respectively. The left
data fields are composed of a half message as described in Message Type 25.
Message ID
983

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