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Unicore UM980 GNSS RTK Module


GPS/GLONASS/Galileo/BeiDou Multi-frequency High-precision GNSS RTK Module



The UM980 high-precision GNSS RTK module is Unicore’s new-generation proprietary high-precision positioning, based on the NebulasIV SoC. The UM980 simultaneously tracks multiple frequencies of all GNSS systems, enabling the module to output high-precision RTK positioning. The built-in advanced anti-interference technology ensures the UM980 delivers reliable and accurate positioning data even in complex electromagnetic environments. Featuring extraordinary positioning performance and stability, UM980 is a perfect choice for high precision navigation and positioning applications.

The UM980 simultaneously tracks signals from GPS, GLONASS, Galileo, BeiDou and QZSS systems and supports tri-band signals from GPS, Galileo and BeiDou and QZSS, delivering “instantaneous” RTK initialization achieving centimeter level positioning accuracy. In areas of partial signal blockage or over long baseline distance, the UM980 obtains RTK positioning results quickly and reliably.

RTK KEEP technology eliminates the positioning errors affected by satellite orbits, clock difference’s, ionospheric and tropospheric delays by means of models and parameter estimation after the loss of base station data. Centimeter-level positioning accuracy can be maintained for up to 10 minutes.

NebulasIVTM is Unicore’s latest generation proprietary GNSS SoC. By leveraging 22nm process node architecture, high-performance multi-mode baseband processor and embedded microprocessor, NebulasIVTM delivers superb performance and maintains low power consumption. The integrated RTK matrix processing technology allows the chip to deliver an enhanced and robust all-system all-frequency centimeter-level RTK position.


  • Based on new generation GNSS SoC – NebulasIVTM, with integrated RF baseband and precision algorithms
  • 17.0 x 22.0 mm surface-mount package
  • Supports all-constellation all-frequency on-chip RTK positioning solution
  • Supports GPS L1/L2/L5, GLONASS L1/L2, Galileo E1/E5a/E5b, BeiDou B1/B2I/B3I, QZSS L1/L2/L5 and SBAS
  • Instantaneous RTK initialization technology
  • Independent tracking of each frequency and 60dB narrowband anti-jamming technology


  • 1408 channels
  • Small footprint
  • Centimeter-level RTK positioning
  • Low power consumption of <500mW


  • UAV, UVS, Robotics
  • Survey and Mapping
  • Machine Control
  • Precision Agriculture

Technical Specifications

Channels: 1408 channels, based on NebulasIVTM
GPS: L1C/A, L1C*, L2P(Y), L2C, L5
Galileo: E1, E5a, E5b, E6*
BeiDou: B1I, B2I, B3I, B1C, B2a, B2b*
QZSS: L1, L2, L5, L6*
SinglePoint Position (RMS): Horizontal: 1.5m
Vertical: 2.5m
DGNSS (RMS): Horizontal: 0.4m
Vertical: 0.8m
RTK (RMS): Horizontal: 0.8cm + 1ppm
Vertical: 1.5cm + 1ppm
Warm Start: <20 s
Hot Start: <5 s
Reacquisition Time: <1 s
Initialization Time: <5 s (typical)
Initialization Reliability: >99.9%
Data Update Rate: 50 Hz*
Time Accuracy (RMS): 20 ns
Velocity Accuracy (RMS): 0.03 m/s
Dimensions: 17 mm x 22 mm x 2.6 mm
Weight: 1.88 +/- 0.03g
Package: 54 pin LGA
Operating Temperature: -40°C – +85°C
Storage Temperature: -55°C – +95°C
Humidity: 95% non-condensing
Vibration: GJB150.16A-2009, MIL-STD-810F
Shock: GJB150.18A-2009, MIL-STD-810F
Voltage: +3.0 ~ +3.6VDC
Ripple Voltage: 100 mV p-p (max)
Power Consumption: 480mW (typical)

* Supported by future firmware.

Evaluation Board

  • UM980-EB


The UM980 high-precision GNSS RTK module from Unicore is available through TerrisGPS. Please use the Request Pricing form to contact us for further information.

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Client Testimonials

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"Thank you for your prompt service. All seems to be working well again. Your techs were very helpful with the troubleshooting."
J.O. - Ground Navigation
"Thanks for all the troubleshooting help, also to John for his assistance and the prompt answers from you guys!"
F.A. - Survey Industry

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