Behind every significant change in human society there is always the birth of an important technology. At the dawn of a new era, South is leading an era of high-precision positioning.


Color LED indicators

Longer battery life

Super radio and Farlink protocol

IMU for slope survey

SoC Technology


Using multi-layer structure and high integration design, the Galaxy G3 receiver is very small, with dimensions 130mm X 80mm. Built with magnesium alloy materials, the weight is only 790g including internal battery, very light and convenient to carry.

Excellent performance

The excellent performance of the Galaxy G3 allows you to understand high-tech in the surveying and mapping industry.

Independent indicators with different colors make the receiver’s working status and information clearer and more intuitive, and the function module can be clearly known even in bright light.


G3’s GNSS card is integrated with an advanced SoC, a chip that features high integration and low power consumption, effectively suppresses interfering signals, and obtains higher quality observation data from satellite constellations

The GNSS board fits perfectly on the power board and is not removable.

High management and control capacity

The G3 is integrated with the ROS system, which comes with the intelligent implementation of multi-mode hardware components, strong computing power and intelligent scheduling mechanism, together with the ultra-thin memory management mechanism, make the receiver’s fluency and operating speed understandably improved.


It adopts the new “RTK engine algorithm” that optimizes data robustness, avoids the false point during survey, and ensures the reliability and stability of the coordinate result in complex environments.

Based on the signal tracking capability of the L-band, the Galaxy G3 can capture the precise orbit information and precise satellite clock error carried by the BeiDou-3 GEO satellite’s B2b signal, which can provide users with single-point positioning services at the centimeter level in real time through an accurate algorithm. The positioning is no longer restricted by the terrestrial environment, such as mountain, desert and island. The fixed solution is generally available as long as the GNSS constellations are visible.


Excellent performance and reliable algorithm technology help surveyors increase productivity.

Equipped with a super UHF module developed by SOUTH – “Beaver”, comes with 2W transmission power, the Galaxy G3 really achieves the goal of long distance work using a new radio-Farlink communication protocol, which increases signal sensitivity and transmission efficiency.

The frequency of each channel under the “Farlink” protocol is different from the commonly used ones, which effectively prevent interference from other radio signals.

GNSS Features Channels 1598
GPS L1, L1C, L2C, L2P, L5
BDS BDS-2: B1I, B2I, B3I

BDS-3: B1I, B3I, B1C, B2a, B2b*
QZSS L1, L2C, L5*
Positioning output rate 1Hz~20Hz
Startup Time < 10s
Startup Reliability > 99,99%
Positioning Accuracy GNSS differential positioning code Horizontal: 0,25 m + 1 ppm RMS

Vertical: 0,50 m + 1 ppm RMS
Static (long observations) Horizontal: 2,5 mm + 1 ppm RMS

Vertical: 3 mm + 0,4 ppm RMS
Static Horizontal: 2,5 mm + 0,5 ppm RMS

Vertical: 3,5 mm + 0,5 ppm RMS
fast static Horizontal: 2,5 mm + 0,5 ppm RMS

Vertical: 5 mm + 0,5 ppm RMS
PPK Horizontal: 3 mm + 1 ppm RMS

Vertical: 5 mm + 1 ppm RMS
RTK(UHF) Horizontal: 8 mm + 1 ppm RMS

Vertical: 15 mm + 1 ppm RMS
RTK(NTRIP) Horizontal: 8 mm + 0,5 ppm RMS

Vertical: 15 mm + 0,5 ppm RMS
RTK initialization time 2~8s
SBAS Positioning Typically < 5m 3DRMS
L-BAND Horizontal: 5-10cm (5-30min)

Vertical: 10-30cm (5-30min)
IMU Tilt less than 10 mm + 0.7 mm/° for 30°
IMU tilt angle 0° ~ 60°
Hardware Performance Dimension 130mm(W) ×130mm(L) × 80mm(H)
Weight 790g (battery included)
Material Aluminum magnesium alloy shell
Operating Temperature -45℃ ~ +75℃
Storage Temperature -55℃ ~ +85℃
Humidity 100% non-condensing
Waterproof/dustproof IP68 standard, protected from prolonged immersion to a depth of 1m IP68 standard, fully protected against blowing dust
Shock/Vibration Withstands 2-meter pole drop onto a concrete floor naturally

Power Source 6-28V DC, overvoltage protection
Battery Built-in rechargeable 7.2V 6800 mAh Li-ion battery
Battery life 3 PM (Bluetooth Rover Mode)
Communications I/O Port External 5-pin LEMO power port + RS232 type C (charging, OTG to USB disk, data transfer with PC or phone, Ethernet)

1 UHF antenna TNC interface
Internal UHF 2W radio, receive and transmit, radio router and radio repeater
Frequency Range 410 – 470MHz
Communication Protocol Farlink, Trimtalk450s, SOUTH, HUACE, Hi-target, Satel
Communication Range Usually 8km with Farlink protocol
NFC Communication Automatic close-range pairing (less than 10 cm) between the receiver and the controller (controller requires another NFC wireless communication module)
Bluetooth Bluetooth 3.0/4.1 standard, Bluetooth 2.1 + EDR
WI-FI Modem standard 802.11 b/g
Wi-fi access point AP mode, the receiver broadcasts its access point from the web user interface accessing with any mobile terminal
wi-fi data connection Client mode, the receiver can transmit and receive correction data streams via WiFi data link
Data storage/transmission Store 4 GB SSD Automatic cycling storage (the first data files will be automatically removed as long as the memory is not sufficient)

Supports external USB storage
Data Transmission USB data transmission plug and play mode

Supports FTP/HTTP data download
Data Format Static data formats: STH, Rinex2.01, Rinex3.02, etc.

Differential format: RTCM 2.3, RTCM 3.0, RTCM 3.1, RTCM 3.2

GPS output data format: NMEA 0183, coordinate plane PJK, SOUTH Binary code

Network model support: VRS , FKP, MAC, fully supports NTRIP protocol
Sensors Electronic Bubble The controller software can display electronic bubble, checking the carbon pole leveling status in real time
IMU Integrated IMU module, calibration-free and immune to magnetic interference
Thermometer Built-in thermometer sensor, adopting intelligent temperature control technology, monitoring and adjusting the temperature of the receiver
User Interaction Operating System Linux
Buttons One Button
Indicators 5 LED indicators (Satellite, Charging, Power, Datalink, Bluetooth)
web interaction With access to the internal web interface management via Wi-Fi or USB connection, users can monitor the status of the receiver and change settings freely
Voice Guidance Provides voice guidance of status and operation. Supports: Chinese/English/Korean/Spanish/Portuguese/Russian/Turkish
Secondary Development Provides secondary development kit and opens OpenSIC observation data format and interaction interface definition
Cloud Service The powerful cloud platform provides online services such as remote management, firmware update, online registration, etc.