u-blox ZED-F9P Interface Description - Manual
Advance Information
5.12.4 UBX-MGA-GAL (0x13 0x02)
5.12.4.1 UBX-MGA-GAL-EPH
Message
UBX-MGA-GAL-EPH
Description
Galileo Ephemeris Assistance
Firmware
Supported on:
•
u-blox 9 with protocol version 27
Type
Input
Comment
This message allows the delivery of Galileo ephemeris assistance to a receiver. See the
description of
for details.
Header
Class
ID
Length (Bytes)
Payload
Checksum
Message Structure
0xB5 0x62
0x13 0x02 76
see below
CK_A CK_B
Payload Contents:
Byte Offset
Number
Format
Scaling
Name
Unit
Description
0
U1
-
type
-
Message type (0x01 for this type)
1
U1
-
version
-
Message version (0x00 for this version)
2
U1
-
svId
-
Galileo Satellite identifier (see
3
U1
-
reserved1
-
4
U2
-
iodNav
-
Ephemeris and clock correction Issue of Data
6
I2
2^-43
deltaN
semi-
circles/s
Mean motion difference from computed value
8
I4
2^-31
m0
semi-
circles
Mean anomaly at reference time
12
U4
2^-33
e
-
Eccentricity
16
U4
2^-19
sqrtA
m^0.5
Square root of the semi-major axis
20
I4
2^-31
omega0
semi-
circles
Longitude of ascending node of orbital plane at
weekly epoch
24
I4
2^-31
i0
semi-
circles
Inclination angle at reference time
28
I4
2^-31
omega
semi-
circles
Argument of perigee
32
I4
2^-43
omegaDot
semi-
circles/s
Rate of change of right ascension
36
I2
2^-43
iDot
semi-
circles/s
Rate of change of inclination angle
38
I2
2^-29
cuc
radians Amplitude of the cosine harmonic correction
term to the argument of latitude
40
I2
2^-29
cus
radians Amplitude of the sine harmonic correction term
to the argument of latitude
42
I2
2^-5
crc
radians Amplitude of the cosine harmonic correction
term to the orbit radius
44
I2
2^-5
crs
radians Amplitude of the sine harmonic correction term
to the orbit radius
46
I2
2^-29
cic
radians Amplitude of the cosine harmonic correction
term to the angle of inclination
UBX-18010854 - R04
Advance Information
Page 107 of 259
