Meridian M3Plus

Mini Radio&IMU GNSS

M3Plus GNSS receiver features an ultra-light-weight, compact design combined with a full-frequency antenna, advanced multi-channel RTK engine, built-in 2W UHF radio, and advanced IMU. Supporting both CORS and radio RTK modes, it enables fast setup, intuitive operation, and efficient fieldwork, delivering accurate and reliable positioning with exceptional portability and ease of use

Multi Constellation

M3Plus provides an excellent onboard real-time navigation solution with high accuracy. Multi-satellite signals (GPS, GLONASS, BEIDOU, GALILEO, QZSS, IRNSS, L-Band) are included.

Built-in lMU Feature

Equipped with calibration-free lMU technology in small body, brings you to focus on your surroundings and not the bubble to measure the points that previously could not be measured, making your stake out more efficiently.

Extended Working Coverage

With a lightweight built-in 2W radio powered by the MeridianLink protocol, M3Plus supports a working range of up to 10 km, providing reliable RTK communication while maintaining a compact, portable, and easy-to-carry design—ideal for efficient everyday field operations.

Rugged, Compact and Portable Design

Designed for versatility, the M3 supports armband, pocket, and pole-mounted use for effortless and efficient fieldwork.

All-in-view RTK Positioning

Embedded with a high precision GNSS module, the M3plus supports centimeter-level CORS ＆ Radio differential data positioning.

Technical Specification

GNSS Signal
Channel	1408
BDS	B1I，B2I，B3I，B1C，B2a，B2b*
GPS	L1 C/A，L1C*，L2P(Y)，L2C，L5
GLONASS	L1，L2，L3*
GALILEO	E1，E5a，E5b，E6*
QZSS	L1C/A, L1C, L2C, L5, L6*
SBAS	L1, L5*
NavIC(IRNSS)*	L5
L-band	B2b PPP (Only for the Asian-Pacific Region)& HAS*
Data Format
Format	CMR, CMR+, RTCM2.X, RTCM3.X
Data Updating Rate	Up to 20Hz
Initialization Time	≤5 Seconds (Typical)
Cold Start	≤30 Seconds
Hot Start	≤3 Seconds
Positioning Performance
Single Point Positioning (RMS)	Horizontal: 1.5m \| Vertical: 2.5m
DGPS (RMS)	Horizontal: 0.4m \| Vertical: 0.8m
Real-Time Kinematic (RMS)	Horizontal: ±(8mm+1×1ppm) \| Vertical: ±(15mm+1×1ppm)
Speed Accuracy (RMS)	0.03m/s
Tilt Compensation Accuracy (Up to 120°)	≤1.5cm(Tilt Angle≤30°)
Communication
Bluetooth	Bluetooth V4.0
Internal Radio (Optional)	Transmitting Power: 2W(33±1dBm) 1W(30±1dBm) Frequency: 410-470MHz Protocol: SOUTH, TRIMTALK 450S, TRIMMK III, TRANSEOT, SATEL, MERIDIANLINK Air Baud Rate: 9600,19200,11000
Cellular (Optional)	Category: LTE Cat 1 bis LTE-FDD: B1/3/5/7/8/20/28
Indicator
LED Indicators	Power Indicator x1 Bluetooth Indicator x1 Differential Data Indicator x1 Satellite Indicator x1
Battery
Specifications	7.4V/2500 mAh lithium-ion Rechargeable Battery
Operating Times	RTK Rover: Up to 10 hours (Typical Power Consumption)
Environment
Operating Temperature	-20°C~+75°C
Storage Temperature	-40°C~+85°C
Anti-seismic	1.6m Pole Drop Onto Concrete
Dust & Waterproof	IP67
Humidity	95% No Condensation
Physical
I/O Interface	Type-C & Power Button
Dimensions	54×59×127mm
Weight	≤300g