SBAS ephemeris report
The SBAS ephemeris report is sent when Command Packet 54h is used to request the almanac for one satellite or all satellites. The GETSVDATA SUBTYPE byte (byte 4) is set to twenty-three (23) to request the report.
The following table shows the additional records provided in Report Packet 55h when ephemeris data is included.
|
Subtype 23: SBAS ephemeris data |
|||
|---|---|---|---|
|
Byte |
Item |
Type |
Meaning |
|
6–7 |
WEEK NUMBER |
2 (short) |
GPS Time |
|
8–11 |
TOE |
4 (long) |
seconds (GPS Time) |
|
12 |
IODE |
1 (byte) |
|
|
13 |
URA |
1 (byte) |
|
|
14–21 |
X |
8 (double) |
meters |
|
22–29 |
X velocity |
8 (double) |
meters / sec |
|
30–37 |
X acceleration |
8 (double) |
meters / sec2 |
|
38–45 |
Y |
8 (double) |
meters |
|
46–53 |
Y velocity |
8 (double) |
meters / sec |
|
54–61 |
Y acceleration |
8 (double) |
meters / sec2 |
|
62–69 |
Z |
8 (double) |
meters |
|
70–77 |
Z velocity |
8 (double) |
meters / sec |
|
78–85 |
Z acceleration |
8 (double) |
meters / sec2 |
|
86–93 |
AF0 |
8 (double) |
seconds |
|
94–101 |
AF1 |
8 (double) |
seconds / second |
|
---------- End of Subtype 23 ---------- |
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