u-blox ZED-F9P, Описание интерфейса

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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