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

Unicore UM442 High Precision GNSS Chipset


GPS/GLONASS/Galileo/BeiDou High precision RTK and Heading Module



The Unicore UM442 high precision GNSS chipsetisa cost efficientRTKand heading moduledevelopedbyUnicoreCommunications, Inc. By employingUnicore’s new generation SOC chip Nebulas-II1, the UM442 can simultaneously track GPS, GLONASS, Galileo and BeiDou. It also supports SBAS and QZSS.

Powered by Unicore “UGypsophila” RTK processing technology, the UM442 tracks more satellites and performs optimization on the multi-dimensional RTK matrix computation, resulting in much higher RTK processing capability.
UM442 has an onboard MEMS chip together with the U-Fusion integrated navigation algorithm. It can achieve accurate and reliable positioning and attitude sensing, even in the most challenging environments such as urban canyons, tunnels, etc.


  • Supports GPS L1 + GLONASS L1 + Galileo E1 + BeiDou B1
  • 30 mm x 40 mm, high precision RTK module
  • Supports antenna signal detection
  • 20Hz RTK update rate
  • Adaptive recognition of RTCM input data formats
  • Onboard MEMS integrated navigation, improved U-Fusion integrated navigation algorithm
  • SMD packaging

Technical Specifications

Channels: 432
Galileo: E1
BeiDou: B1
SinglePoint Position (RMS): Horizontal – 1.5 m
Elevation – 3.0 m
DGPS (RMS): Horizontal – 0.4 m
Vertical – 0.8 m
RTK (RMS): Horizontal – 1 cm + 1 ppm
Vertical – 1.5 cm + 1 ppm
Reacquisotion: < 1 s
VelocityAccuracy (RMS): 0.03 m/s
TimeAccuracy (RMS): 20ns
HeadingAccuracy: 0.2°@ 1 mbaseline
Cold Start: <45 s
Initialization Time: <5 s (typical)
Dimensions: 30 mm x 40 mm x 4 mm
Weight: 8 g
OperatingTemperature: -40 °C – +85 °C
StorageTemperature: -55 °C – +90 °C
Humidity: 95% non-condensing
Vibration: MIL-STD-810
Shock: MIL-STD-810


The UM442 high precision GNSS chipset 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