Email Us: [javascript protected email address] Toll Free: 1-866-642-1880

Unicore UM982 GNSS RTK & Heading Module


GPS/GLONASS/Galileo/BeiDou All-constellation Multi-frequency High Precision RTK and Heading Module



The UM982 GNSS RTK & heading is Unicore’s new-generation proprietary high-precision positioning and heading module, based on the Nebulas IV SoC. The UM982 simultaneously tracks multiple frequencies of all GNSS systems, enabling the module to output high-precision RTK positioning along with dual-antenna heading. The built-in advanced anti-interference technology ensures the UM982 delivers reliable and accurate positioning data even in complex electromagnetic environments. Featuring extraordinary positioning performance and stability, UM982 is a perfect choice for high precision navigation and positioning applications.

The UM982 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 UM982 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.

The INSTANT HEADING algorithm utilizes synchronized, symmetric, multi-path mitigated observational data to process single-epoch ambiguity to provide instant heading. INSTANT HEADING introduces multi-system, multi-frequency, carrier
wide and narrow lane integrated algorithms, such as ambiguity search, cycle slip detection / repair and multi-path error. Data from all tracked constellations and ensures the usability and reliability of the heading function.


  • Small compact size 16.0 x 21.0 mm
  • Multi-System, multi-frequency high-precision RTK and heading module (SMD packaging)
  • Supports GPS L1/L2/L5, GLONASS L1/L2, Galileo E1/E5a/E5b, BeiDou B1/B2I/B3I, QZSS L1/L2/L5 and SBAS
  • Dual antenna input with support of antenna signal detection
  • Supports simultaneous output of heading and positioning at rates of up to 20Hz


  • 1408 channels
  • Smallest footprint in the industry
  • Centimeter-level RTK positioning
  • 0.2° Heading accuracy (1m baseline)
  • Low power consumption, ~600mW


  • UAV, UVS, Robotics
  • Machine Control
  • Precision Agriculture
  • Marine Navigation
  • Antenna alignment / pointing

Technical Specifications

Channels: 1408 channels, based on NebulasIVTM
GPS: L1/L2/L5
Galileo: E1/E5a/E5b
BeiDou: B1I/B2I/B3I
QZSS: L1/L2/L5
Autonomous Accuracy (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
Heading Accuracy (RMS): 0.2° @ 1m baseline
Cold Start: <30 s
Warm Start: <10 s
Reacquisition Time: <1 s
Initialization Time: <5 s (typical)
Initialization Reliability: >99.9%
Data Update Rate: 20 Hz
Time Accuracy (RMS): 20 ns
Velocity Accuracy (RMS): 0.03 m/s
Dimensions: 16 mm x 21 mm x 2.6 mm
Weight: 1.82 +/1 0.03g
I/O Connectors: 48 pin LGA
Operating Temperature: -40°C – +85°C
Storage Temperature: -55°C – +95°C
Humidity: 95% non-condensing
Vibration: GJB150.16-2009, MIL-STD-810F
Shock: GJB150.16-2009, MIL-STD-810F
Voltage: 3.3V ~ 5V DC
Ripple Voltage: 100 mV p-p (max)
Power Consumption: 600mW (typical)

Evaluation Board

  • UM982-EB


The UM982 high-precision GNSS RTK and heading module from Unicore is available through TerrisGPS. Please use the Request Pricing form to contact us for further information.

Testimonial Icon

Client Testimonials

This page is having a slideshow that uses Javascript. Your browser either doesn't support Javascript or you have it turned off. To see this page as it is meant to appear please use a Javascript enabled browser.

"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

Testimonial Icon

Copyright , TERRISGPS, All rights reserved, Privacy Policy, Terms