Datasheet
Table Of Contents
- Document Information
- Contents
- 1 Functional description
- 1.1 Overview
- 1.2 Product features
- 1.3 Performance
- 1.4 Block diagram
- 1.5 Supported GNSS Constellations
- 1.6 Assisted GNSS (A-GNSS)
- 1.7 Augmentation Systems
- 1.8 Broadcast Navigation Data
- 1.9 Untethered Dead Reckoning (UDR)
- 1.10 Odometer
- 1.11 Data logging
- 1.12 Geofencing
- 1.13 Message Integrity Protection
- 1.14 Spoofing Detection
- 1.15 TIMEPULSE
- 1.16 Protocols and interfaces
- 1.17 Interfaces
- 1.18 Clock generation
- 1.19 Power management
- 1.20 Antenna
- 2 Pin Definition
- 3 Configuration management
- 4 Electrical specification
- 5 Mechanical specifications
- 6 Reliability tests and approvals
- 7 Product handling & soldering
- 8 Default messages
- 9 Labeling and ordering information
- Related documents
- Revision history
- Contact
NEO-M8U - Data Sheet
UBX-15015679 - R06 Functional description Page 6 of 27
Product Information
1.3 Performance
Parameter Specification
Receiver type 72-channel u-blox M8 engine
GPS L1C/A, SBAS L1C/A, QZSS L1C/A, QZSS L1-SAIF, GLONASS L1OF, BeiDou B1I ,
Galileo E1B/C
Accuracy of time pulse signal RMS 30 ns
99% 60 ns
Frequency of time pulse
signal
0.25 Hz…10 MHz
(configurable)
Operational limits
1
Dynamics
≤ 4 g
Altitude 50,000 m
Velocity 500 m/s
Velocity accuracy
2
0.5 m/s.
Heading accuracy
2
1 degrees
Position error
during GNSS loss
3
< 60 s signal
loss
typ. 10% distance
travelled
Max navigation update rate,
High Navigation Rate output
30 Hz
Max navigation update rate
(PVT)
4
2 Hz
Navigation latency
High Navigation Rate output
<10 ms
Max sensor measurement
output rate
100 Hz
GNSS GPS & GLONASS GPS GLONASS BeiDou Galileo
Time-To-First-Fix
5
Cold start 26 s 30 s 31 s 39 s 57 s
Hot start 1.5 s 1.5 s 1.5 s 1.5 s 1.5 s
Aided starts
6
3 s 3 s 3 s 7 s 7 s
Sensitivity
7
Tracking &
Navigation
-160 dBm -160 dBm -160 dBm -160 dBm -154 dBm
Reacquisition -160 dBm -159 dBm -156dBm -155 dBm -152 dBm
Cold start -148 dBm -147 dBm -145 dBm -143 dBm -133 dBm
Hot start -157 dBm -156 dBm -155 dBm -155 dBm -151 dBm
Horizontal position accuracy Autonomous
8
2.5 m 2.5 m 4.0 m 3.0 m TBC
9
With SBAS
10
1.5 m 1.5 m - - -
Altitude accuracy With SBAS
11
3.5 m 3.0 m 7.0 m 5.0 m -
Table 1: NEO-M8U performance in different GNSS modes (default: concurrent reception of GPS and GLONASS)
1
Configured for Airborne < 4g platform
2
50% @ 30 m/s
3
Typical error incurred without GNSS as a percentage of distance travelled
4
Rates with SBAS and QZSS enabled for > 98% fix report rate under typical conditions
5
All satellites at -130 dBm, except Galileo at -127 dBm
6
Dependent on aiding data connection speed and latency
7
Demonstrated with a good external LNA
8
CEP, 50%, 24 hours static, -130 dBm, > 6 SVs
9
To be confirmed when Galileo reaches full operational capability
10
CEP, 50%, 24 hours static, -130 dBm, > 6 SVs
11
CEP, 50%, 24 hours static, -130 dBm, > 6 SVs