u-blox ZED-F9P - UBX-MGA-BDS (0 X13 0 X03)

u-blox ZED-F9P Interface Description - Manual
Advance Information
5.12.2 UBX-MGA-BDS (0x13 0x03)
5.12.2.1 UBX-MGA-BDS-EPH
Message
UBX-MGA-BDS-EPH
Description
BDS Ephemeris Assistance
Firmware
Supported on:
• u-blox 9 with protocol version 27
Type
Input
Comment
This message allows the delivery of BeiDou ephemeris assistance to a receiver. See the
description of AssistNow Online for details.
Header Class ID Length (Bytes) Payload Checksum
Message Structure
0xB5 0x62 0x13 0x03 88
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 - BDS satellite identifier (see Satellite Numbering)
3 U1 - reserved1 - Reserved
4 U1 - SatH1 - Autonomous satellite Health flag
5 U1 - IODC - Issue of Data, Clock
6 I2 2^-66 a2 s/s^2 Time polynomial coefficient 2
8 I4 2^-50 a1 s/s Time polynomial coefficient 1
12 I4 2^-33 a0 s Time polynomial coefficient 0
16 U4 2^3 toc s Clock data reference time
20 I2 0.1 TGD1 ns Equipment Group Delay Differential
22 U1 - URAI - User Range Accuracy Index
23 U1 - IODE - Issue of Data, Ephemeris
24 U4 2^3 toe s Ephemeris reference time
28 U4 2^-19 sqrtA m^0.5 Square root of semi-major axis
32 U4 2^-33 e - Eccentricity
36 I4 2^-31 omega semi-
circles
Argument of perigee
40 I2 2^-43 Deltan semi-
circles/s
Mean motion difference from computed value
42 I2 2^-43 IDOT semi-
circles/s
Rate of inclination angle
44 I4 2^-31 M0 semi-
circles
Mean anomaly at reference time
48 I4 2^-31 Omega0 semi-
circles
Longitude of ascending node of orbital of plane
computed according to reference time
52 I4 2^-43 OmegaDot semi-
circles/s
Rate of right ascension
56 I4 2^-31 i0 semi-
circles
Inclination angle at reference time
60 I4 2^-31 Cuc semi-
circles
Amplitude of cosine harmonic correction term
to the argument of latitude
UBX-18010854 - R04 Advance Information Page 102 of 259