UM4B0 is a compact high precision RTK module. Based on Nebulas-II SoC, it can track all current visible GNSS satellite signals, including BDS B1/B2/B3, GPS L1/L2/L5, GLONASS L1/L2, Galileo E1/E5a/E5b and QZSS L1/L2/L5. Its targeted application fields include light-weight robots, GIS, intelligent driving, UAV, etc.
Product Features
● 30*40 mm, SMD packaging ● Supports GPS, BDS, GLONASS, Galileo and QZSS all-constellation multi-frequency，supports BDS BD3 signal ● RTK: 1cm +1ppm(H); 1.5cm+1ppm(V)
● Up to 20Hz Low-latency output of positioning ● Supports advanced multi-path resistance technology and low-elevation tracking technology
Great Performance comes in different sizes
Compact SMD packaging
All-Constellation Multi-Frequency
Customized services
Firmware quick update and iteration
Rich and Flexible Evaluation Kits and Softwares
Proven - Products have been widely applied in worldwide projects, a leading choice for Intelligent Drive, Robots, UAV，etc
Core Technology
"UGypsophila" RTK technology Better than 1s RTK reacquisition
"RTK KEEP" Technology
Adaptive recognition of RTCM
Performance Specifications
Channels
432 channels,based on Nebulas-II chip
Observation Accuracy(RMS)
BDS
GPS
GLONASS
Galileo
Frequency
BDS B1/B2/B3
B1/L1(C/A)/E1 Code
10cm
10cm
10cm
10cm
GPS L1/L2/L5
B1/L1/E1 Carrier Phase
1mm
1mm
1mm
1mm
GLONASS L1/L2
B2/L2P(Y)/L2C/E5b Code
10cm
10cm
10cm
10cm
Galileo E1/E5a/E5b
B2/L2p(Y)/L2C/E5b Carrier Phase
1mm
1mm
1mm
1mm
QZSS L1/L2/L5
Initialization time
< 5 s (typical)
Single point positioning
Horizontal：1.5 m
Initialization reliability
> 99.9%
Vertical：2.5 m
Reacquisition
< 1 s
DGPS(RMS)
Horizontal：0.4 m
Correction
RTCM v2.3/3.0/3.2
Vertical：0.8 m
Data Output
NMEA-0183，Unicore Binary
RTK(RMS)
Horizontal：10 mm + 1 ppm
Update Rate
20 Hz
Vertical：15 mm + 1 ppm
Positioning rate
20 Hz
Velocity Accuracy (RMS)
0.03 m/s
Time accuracy (RMS)
20 ns
Time to First Fix (TTFF)
Cold start < 25 s
Dead Reckoning Error
<5% of distance travelled during GPS denied conditions
