UM4B0_High-Precision GNSS Module | GPS Receiver Modules/Boards | High-Precision GNSS Devices | High Precision RTK Modules | Products

GPS/BDS/GLONASS/Galileo
Multi-freqency High-precision RTK Module

Applications

Features

Performance Specifications

Data Manual

Related Products

Brief Introduction

UM4B0 is an all-constellation all-frequency RTK positioning module based on the high-performance high-precision SoC - NebulasII, which is developed by Unicore Communications. It supports multiple satellite signals, including BDS B1I/B2I/B3I/B1C/B2a, GPS L1/L2/L5, GLONASS L1/L2, Galileo E1/E5a/E5b and QZSS L1/L2/L5. UM4B0 has adopted narrowband anti-jamming technology. It is mainly applied in the field of light-weight robots, GIS, intelligent driving, UAV,etc.

Product Features

● Based on multi-system multi-frequency high-performance SoC - NebulasII, with 432 super channels

● Support BDS, GPS, GLONASS, Galileo and QZSS, including Beidou-3 signal

● 30x40 mm, small size all-system all-frequency RTK positioning SMD module

● Instantaneous RTK initialization and support long baseline RTK solution
● Adaptive recognition of differential data RTCM format, support antenna signal detection

● 60dB narrowband anti-jamming, support multi-path suppression technology

● Support UART, 1PPS, Event and other physical interfaces

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

"RTKKEEP" 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
	GLONASS L1/L2	B2/L2P(Y)/L2C/E5b Code	10cm	10cm	10cm	10cm
	GLONASS L1/L2	B3/L5/E5a Carrier Phase	1mm	1mm	1mm	1mm
Single point positioning	Horizontal：1.5 m	Initialization time	< 5 s (typical)
Single point positioning	Vertical：2.5 m	Initialization reliability	> 99.9%
DGPS(RMS)	Horizontal：0.4 m	Reacquisition	< 1 s
DGPS(RMS)	Vertical：0.8 m	Correction	RTCM v2.3/3.0/3.2
RTK(RMS)	Horizontal：10 mm + 1 ppm	Data Output	NMEA-0183，Unicore Binary
RTK(RMS)	Vertical：15 mm + 1 ppm	Update Rate	20 Hz
Velocity Accuracy (RMS)	0.03 m/s	Positioning rate	20 Hz
Time to First Fix (TTFF)	Cold start < 25 s	Time accuracy (RMS)	20 ns
Time to First Fix (TTFF)	Hot start < 10 s	Dead Reckoning Error	<5% of distance travelled during GPS denied conditions
		Network Protocol	NTRIP、TCP/IP

Physical Specifications

Size	30 × 40 × 4 mm
Weight	9.2 g

Functional Ports

3x UART(LV-TTL)	1x1PPS（LV-TTL）
1xEvent input

Environmental Specifications

Temperature	Working: -40℃～+85℃
Temperature	Storage: -55℃～+95℃
Humidity	95% No condensation
Vibration	GJB150.16-2009，MIL-STD-810
Shock	GJB150.18-2009，MIL-STD-810