Product Introduction

T-RTK UM982: Cost-Effective Centimeter-Level Positioning Solution.

This module features a modular, stackable design that integrates mobile station, base station, 4G, and radio functionalities. It includes a built-in magnetic compass, Wi-Fi hotspot, and supports single/dual antenna configurations for applications like drones, unmanned vehicles, and surveyingPowered by the UM982 all-system, all-frequency chip, it achieves a cold start in <30s, hot start in <4s, and provides a 20Hz update rate, supporting BeiDou, GPS, and other global satellite systems.It offers versatile interfaces (USB-C, UART, flight controller port) for direct connection to Pixhawk flight controllers and compatibility with embedded devices. Drivers for ROS, Python, and C++ facilitate access to position, velocity, and heading data.An optional all-in-one base station version provides up to 8 hours of battery life for portable, plug-and-play operation.

Product Features

All-Satellite All-Frequency, Worry-Free Signal

Supports global navigation systems such as BDS/GPS, with multi-frequency signal reception, enabling rapid signal acquisition even in complex environments to ensure stable operation.

Centimeter-Level Accuracy, Precision Guaranteed

Utilizes Real-Time Kinematic (RTK) technology to deliver real-time centimeter-level positioning accuracy, meeting stringent requirements for professional applications like surveying and construction layout.

Multi-Platform Compatibility, Broad Applicability

Designed for flexible integration with diverse equipment including drones and unmanned vehicles, adapting to varied high-precision positioning needs across industries.

Multi-Mode Communication, Flexible and Efficient

Supports self-established base stations or connection to CORS networks, with configurable communication modules (e.g., 4G, radio) to ensure robust and adaptable differential data links.

Cumulative sales surpass 10,000 units, shipped to over 50 countries worldwide

All-Satellite All-Frequency, Centimeter-Level Accuracy

Powered by the high-performance UM982 chip, it supports all major satellite systems and full-frequency signals, delivering data at a high update rate of 20Hz.Horizontal Accuracy: 0.8 cm + 1 ppm,Vertical Accuracy: 1.5 cm + 1 ppm

Multi-Platform Compatibility

Native support for diverse application scenarios including drones, autonomous vehicles, robots, agricultural machinery, surveying and mapping, and environments with or without CORS services.

Selection Recommendations

Modular Design

Features a stackable, modular design incorporating mobile units, base station units, 4G communication modules, 5-kilometer radio modules, Wi-Fi hotspots, and other components.

Modular Design

Features a stackable, modular design incorporating mobile units, base station units, 4G communication modules, 5-kilometer radio modules, Wi-Fi hotspots, and other components.

Extensive Interface Configuration

Integrated Type-C (combined power delivery/debugging/communication), dual serial ports (4-pin basic communication + 7-pin flight controller interface), PPS precision timing, and I²C direct connection to magnetic compass.

Multiple Communication Methods

Supports direct connection to CORS via 4G modules, radio ad hoc networking, and Python API integration with CORS, offering flexible adaptation to diverse scenarios.

WiFi Hotspot Networking

The base station incorporates a built-in WiFi hotspot for wireless connectivity, enabling UDP-based sharing of RTCM differential data packets.Multiple Mission Planner or QGC ground stations can be paired with remote controllers to achieve drone swarm positioning.

Flexible single/dual antenna switching

Flexible switching between SMA single-antenna direct plug and MMCX dual-antenna connectors.

Secondary Development

Provides ROS, Python, and C++ drivers for easy access to data such as latitude, longitude, altitude, velocity, and heading, enabling rapid secondary development.

Integrated Base Station

Optional integrated base station combines the base unit, battery, mushroom-head antenna, and tripod into one compact unit. Offers 8 hours of battery life, lightweight and portable, ready to use right out of the box.

Integrated Base Station

Optional integrated base station combines the base unit, battery, mushroom-head antenna, and tripod into one compact unit. Offers 8 hours of battery life, lightweight and portable, ready to use right out of the box.

Interface and Wire Sequence

Fastening method

Technical Parameter

Parameter	Model	Mobile End	Base Station End	Integrated Base Station (T-RTK UM982 OneBase)
Positioning Module	Model	UM982	UM982	UM982
Basic information	Channels	1408 channels, based on NebulasIV
	Antenna Interface	MMCX2, SMA1		SMA*1
	Modes	BDS B1I, B2I, B3I, B1C, B2b
		GPS L1C/A, L2C, L2P(Y), L5
		GLONASS G1, G2
		Galileo E1, E5a, E5b, E6
		QZSS L1C/A, L2C, L5, L6
		SBAS L1C/A
	Main Antenna Frequencies	BDS: B1I, B2I, B3I
		GPS: L1C/A, L2P (Y)/L2C, L5
		GLONASS: G1, G2
		Galileo: E1, E5a, E5b
		QZSS: L1, L2, L5
	Secondary Antenna Frequencies	BDS: B1I, B2I, B3I
		GPS: L1C/A, L2C
		GLONASS: G1, G2
		Galileo: E1, E5b
		QZSS: L1, L2
Performance Metrics	RTK (RMS)	Horizontal: 0.8cm + 1ppm
		Vertical: 1.5cm + 1ppm
	Single Point (RMS)	Horizontal: 1.5m
		Vertical: 2.5m
	DGPS (RMS)	Horizontal: 0.4m + 1ppm
		Vertical: 0.8m + 1ppm
	PPP (RMS)	Horizontal: 5cm
		Vertical: 10cm
	Heading Accuracy (RMS)	0.1° / 1m baseline
	PPS Accuracy (RMS)	20 ns
	Velocity Accuracy (RMS)	0.03 m/s
	Cold Start Time	<30 s
	Warm Start Time	< 4 s
	Initialization Time	<5s (typical)
	Initialization Reliability	> 99.9%
	Data Update Rate	Default: 2Hz, Max: 20Hz
		Positioning/Heading: 20Hz, Raw Measurements: 20Hz
	Differential Data Format	RTCM 3.X
	Data Format	NMEA-0183, Unicore
	Baud Rate	4800bps~921600bps (Default: 115200bps)
Magnetometer	Model	IST8310
	Measurement Range	±1600 μT (X, Y-axis), ±2500 μT (Z-axis)
	Offset Temp. Drift	0.024 μT/°C
Physical	Dimensions	39mm×39mm×12.5mm	39mm×39mm×22.1mm	147mm×82mm×36mm
	Weight	34g (excl. antenna)	52g (excl. antenna)	386g
Electrical	Voltage	5V	5V	5V
	Power Consumption	1300mW	2000mW	2888mW
	Runtime	–	–	9h
Environment (RTK Chip)	Operating Temperature	-40℃ ~ +85℃
	Storage Temperature	-55℃ ~ +95℃
	Humidity	95% non-condensing
	Vibration	GJB150.16-2009, MIL-STD-810F
	Shock	GJB150.18-2009, MIL-STD-810F
Communication Interface	I2C	1 x I2C (shared with 7Pin UART)
	USB	1 x USB
	UART	1 x 4Pin UART, 1 x 7Pin UART		1 x 7Pin UART

Integrated Base Station	Tripod Height	Max 1.80m
	External Power Port	XT30 x 1 (12V)
	Antenna Interface	SMA only
	Voltage Display	Supported
4G Module	Network Standard	4G All-netcom (supports China Mobile/Unicom/Telecom)
	Dimensions	39mm39mm14.5mm (excl. antenna)
	Weight	49g (incl. antenna)
	Operating Voltage	5V (directly powered by RTK)
	Power Consumption	<0.3W
Radio Module	Networking Mode	Peer-to-multipeer, star network
	Max Network Nodes	Theoretical max: 100
	Frequency Band	410~525MHz
	Max TX Power	22±0.5dBm@470MHz
	Transmission Rate	Max: 0.268Kbps
	Communication Range	Max: 5km (air-to-air)
	Dimensions	39mm39mm14.5mm (excl. antenna)
	Weight	49g (incl. antenna)
	Operating Voltage	5V (directly powered by RTK)
	Power Consumption	<0.4W
Quadrifilar Helix Antenna	Operating Modes	GPS L1, L2, L5
		BDS B1, B2, B3
		GLONASS L1, L2, L3
		Galileo E1, E5a, E5b, E6
		SBAS L1, L5
		QZSS L1, L2, L5, L6
		IRNSS L5
	Gain	32±2dB
	Interface	SMA-J
	Dimensions	Φ27.3 * 58.6mm
	Weight	16g
Mushroom Antenna	Operating Modes	GPS L1, L2, L5
		BDS B1I, B2I, B3I, B1C, B2a, B2b
		GLONASS L1, L2, L3
		Galileo E1, E5a, E5b, E6
		SBAS L1, L5
		QZSS L1, L2, L5, L6
		IRNSS L5, L-Band
	Gain	38±2dB
	Interface	TNC-K
	Dimensions	Φ154 * 64.2mm
	Weight	280g
Quadrifilar Antenna Bracket	Dimensions	Height ~11.7cm
	Weight	16g (incl. feeder cable)

Product size

Shipping list

T-RTK-UM982 Modular Centimeter-Level Satellite Positioning Module