u-blox ZED-F9P Interface Description - Manual
Advance Information
MGA-GAL continued
Byte Offset Number
Format
Scaling Name Unit Description
48 I2 2^-29 cis radians Amplitude of the sine harmonic correction term
to the angle of inclination
50 U2 60 toe s Ephemeris reference time
52 I4 2^-34 af0 s SV clock bias correction coefficient
56 I4 2^-46 af1 s/s SV clock drift correction coefficient
60 I1 2^-59 af2 s/s
squared
SV clock drift rate correction coefficient
61 U1 - sisaIndexE1E5
b
- Signal-In-Space Accuracy index for dual
frequency E1-E5b
62 U2 60 toc s Clock correction data reference Time of Week
64 I2 - bgdE1E5b - E1-E5b Broadcast Group Delay
66 U1[2] - reserved2 - Reserved
68 U1 - healthE1B - E1-B Signal Health Status
69 U1 - dataValidityE
1B
- E1-B Data Validity Status
70 U1 - healthE5b - E5b Signal Health Status
71 U1 - dataValidityE
5b
- E5b Data Validity Status
72 U1[4] - reserved3 - Reserved
5.12.4.2 UBX-MGA-GAL-ALM
Message
UBX-MGA-GAL-ALM
Description
Galileo Almanac Assistance
Firmware
Supported on:
• u-blox 9 with protocol version 27
Type
Input
Comment
This message allows the delivery of Galileo almanac assistance to a receiver. See the
description of AssistNow Online for details.
Header Class ID Length (Bytes) Payload Checksum
Message Structure
0xB5 0x62 0x13 0x02 32
see below
CK_A CK_B
Payload Contents:
Byte Offset Number
Format
Scaling Name Unit Description
0 U1 - type - Message type (0x02 for this type)
1 U1 - version - Message version (0x00 for this version)
2 U1 - svId - Galileo Satellite identifier (see Satellite
Numbering)
3 U1 - reserved1 - Reserved
4 U1 - ioda - Almanac Issue of Data
5 U1 - almWNa week Almanac reference week number
6 U2 600 toa s Almanac reference time
8 I2 2^-9 deltaSqrtA m^0.5 Difference with respect to the square root of
the nominal semi-major axis (29 600 km)
UBX-18010854 - R04 Advance Information Page 108 of 259
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