71
AID – INI (0x0B 0x01)
It’s a poll request when “data length” is equal to 0. Poll GPS initial aiding data.
Header ID Data Length Data Checksum
0xB5 0x62 0x0B 0x01 0 None CK_A CK_B
AID – INI (0x0B 0x01)
This is an I/O message. It contains the information of position and time. As an output
message, the value of the clock drift is always 0 and assigned invalid.
Header ID Data Length Data Checksum
0xB5 0x62 0x0B 0x01 48 See below CK_A CK_B
Data
Offset bytes Format Descriptions Notes
0 I4 X coordinate in the ECEF frame (cm)
4 I4 Y coordinate in the ECEF frame (cm)
8 I4 Z coordinate in the ECEF frame (cm)
12 U4 Position accuracy (cm) Standard deviation
16 U2 Time mark configuration 0x01 – enable time mark
0x02 – falling edge
Pin used for time mark:
0x00 – Extint 0
0x10 – Extint 1
0x20 – Extint 2
18 U2 GPS week number
20 U4 GPS time of week (ms)
24 I4 Subms part of GPS time (ns)
28 U4 Millisecond part of time accuracy (ms)
32 U4 Nanosecond part of time accuracy (ns)
36 I4 Clock drift (ns/s)
40 U4 Clock drift accuracy (ns/s)
44 U4 Flags 0x1 – valid position fields
0x2 – valid time fields
0x4 – valid clock drift
fields
0x8 – accurate time is
input by with time pulse
