UM980

GPS/BDS/GLONASS/Galileo/QZSS All-constellation Multi-frequency High-precision RTK Positioning Module

Technical Specifications

Channel	1408 channels, based on NebulasIV
Frequency	GPS L1C/A, L1C, L2C, L2P(Y), L5
	BDS B1I, B3I, B1C, B2a, B2b
	GLONASS G1, G2, G3
	Galileo E1, E5a, E5b, E6
	QZSS L1C/A, L1C, L2C, L5, L6
	NavIC L5
	SBAS L1C/A
Single Point Positioning(RMS)	Horizontal: 1.5m
	Vertical: 2.5m
DGPS (RMS)	Horizontal: 0.4m
	Vertical: 0.8m
RTK (RMS)	Horizontal: 0.8cm+1ppm
	Vertical: 1.5cm+1ppm
PPP (RMS)	Horizontal: 5cm
	Vertical: 10cm
Observation Accuracy (RMS)	BDS	GPS	GLONASS	Galileo
B1I/B1C/L1C/L1C/A/G1/E1 Code	10cm	10cm	10cm	10cm
B1I/B1C/L1C/L1C/A/G1/E1 Carrier Phase	1mm	1mm	1mm	1mm
B2I/B2a/B2b/L5/E5a/E5b Code	10cm	10cm	10cm	10cm
B2I/B2a/B2b/L5/E5a/E5b Carrier Phase	1mm	1mm	1mm	1mm
B3I/L2P(Y)/L2C/G2 Code	10cm	10cm	10cm	10cm
B3I/L2P(Y)/L2C/G2 Carrier Phase	1mm	1mm	1mm	1mm

Time Accuracy(RMS)	20 ns
Velocity Accuracy (RMS)	0.03 m/s
Cold Start	< 12 s
Initialization Time	< 5 s (typical)
Initialization Reliability	> 99.9%
Data Update Rate	50 Hz
Differential Data	RTCM V3.X
Data Format	NMEA 0183, Unicore

3 × UART (LVTTL)

1 × SPI*

1 × I²C*

1 × CAN* (shared with UART3)

Note: Items marked with * are only supported by specific firmware.

UM980_Product_Brief_EN

20/04/2026

VIEW

UM980_User Manual_EN_R1.9

26/12/2025

VIEW