u-blox ZED-F9P User Manual

u-blox ZED-F9P Interface Description - Manual
Advance Information
5.14.14 UBX-NAV-SAT (0x01 0x35)
5.14.14.1 Satellite Information
Message
UBX-NAV-SAT
Description
Satellite Information
Firmware
Supported on:
• u-blox 9 with protocol version 27
Type
Periodic/Polled
Comment
This message displays information about SVs which are either known to be visible or
currently tracked by the receiver. All signal related information corresponds to the subset of
signals specified in Signal Identifiers.
Header Class ID Length (Bytes) Payload Checksum
Message Structure
0xB5 0x62 0x01 0x35 8 + 12*numSvs
see below
CK_A CK_B
Payload Contents:
Byte Offset Number
Format
Scaling Name Unit Description
0 U4 - iTOW ms GPS time of week of the navigation epoch.
See the description of iTOW for details.
4 U1 - version - Message version (1 for this version)
5 U1 - numSvs - Number of satellites
6 U1[2] - reserved1 - Reserved
Start of repeated block (numSvs times)
8 + 12*N U1 - gnssId - GNSS identifier (see Satellite Numbering) for
assignment
9 + 12*N U1 - svId - Satellite identifier (see Satellite Numbering) for
assignment
10 + 12*N U1 - cno dBHz Carrier to noise ratio (signal strength)
11 + 12*N I1 - elev deg Elevation (range: +/-90), unknown if out of
range
12 + 12*N I2 - azim deg Azimuth (range 0-360), unknown if elevation is
out of range
14 + 12*N I2 0.1 prRes m Pseudorange residual
16 + 12*N X4 - flags - Bitmask (see graphic below)
End of repeated block
Bitfield flags
This graphic explains the bits of flags
UBX-18010854 - R04 Advance Information Page 155 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