u-blox ZED-F9P User Manual

u-blox ZED-F9P Interface Description - Manual
Advance Information
5.12.8.2 UBX-MGA-QZSS-ALM
Message
UBX-MGA-QZSS-ALM
Description
QZSS Almanac Assistance
Firmware
Supported on:
• u-blox 9 with protocol version 27
Type
Input
Comment
This message allows the delivery of QZSS 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 0x05 36
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 - QZSS Satellite identifier (see Satellite Numbering
), Range 1-5
3 U1 - svHealth - Almanac SV health information
4 U2 2^-21 e - Almanac eccentricity
6 U1 - almWNa week Reference week number of almanac (the 8 bit
WNa field)
7 U1 2^12 toa s Reference time of almanac
8 I2 2^-19 deltaI semi-
circles
Delta inclination angle at reference time
10 I2 2^-38 omegaDot semi-
circles/s
Almanac rate of right ascension
12 U4 2^-11 sqrtA m^0.5 Almanac square root of the semi-major axis A
16 I4 2^-23 omega0 semi-
circles
Almanac long of asc node of orbit plane at
weekly
20 I4 2^-23 omega semi-
circles
Almanac argument of perigee
24 I4 2^-23 m0 semi-
circles
Almanac mean anomaly at reference time
28 I2 2^-20 af0 s Almanac time polynomial coefficient 0 (8 MSBs)
30 I2 2^-38 af1 s/s Almanac time polynomial coefficient 1
32 U1[4] - reserved1 - Reserved
UBX-18010854 - R04 Advance Information Page 125 of 259

u-blox ZED-F9P Specifications

General

GNSS	GPS, GLONASS, Galileo, BeiDou, QZSS, SBAS
Concurrent GNSS	4
RTK	Yes
Velocity Accuracy	0.05 m/s
Time Pulse Accuracy	30 ns
Operating Temperature	-40°C to +85°C
Supply Voltage	2.7 V to 3.6 V
Channels	184
Frequency Bands	L1, L2
Dimensions	22 mm x 17 mm x 2.4 mm
Interfaces	UART, SPI, I2C