GNSS module with PPP-RTK corrections for Japan

  • Small size, big performance
  • Multi-constellation, multi-frequency including L6 CLAS support
  • Best-in-class RTK performance
  • AIM+ unique interference monitoring and mitigation system + advanced other GNSS+ algorithms
  • Industry-leading ultra-low power consumption
  • Easy-to-integrate
  • Japan's Centimeter Level Augmentation Service (CLAS) integrated


Septentrio mosaic-CLAS is a multi-constellation GNSS receiver packaged in a low-power surface mount module. With a wide array of interfaces, mosaic-CLAS has been specifically designed for the needs of mass market applications like robotics and autonomous systems. This highly reliable, multi-frequency module supports the dedicated L6 signal enabling convenient plug-and-play sub-decimeter accuracy thanks to the integrated PPP-RTK correction service: Centimeter Level Augmentation Service (CLAS) provided by Japan’s Quasi-Zenith Satellite System (QZSS, aka Michibiki). 

Buy your mosaic-CLAS development kit today

Buy now


The GNSS+ Technologies - Top performance in challenging environments

Mechanical vibrations or shocks caused by rough terrain can wreak havoc with satellite tracking. LOCK+ automatically adjusts the parameters of this receiver so you never lose position.

Activity in the ionosphere is a problem for GNSS signals, from loss of RTK fix to total loss of signal lock. Having honed our skills, supporting applications in the most iono-active areas on Earth,  the result is IONO+: the most advanced protection against ionospheric disturbances to GNSS signals on any receiver.

Metal and large nearby structures can reflect GNSS signals and produce multipath. The APME+ system effectively disentangles direct and reflected signals enhancing both position and measurement quality. APME+ is bias free and, in line with Septentrio’s commitment to maximum configurability, can be disabled.

Advanced Receiver Autonomous Integrity Monitoring (RAIM+) comprises fault detection mechanisms of the receiver at all the levels including the generation of measurements, quality control and navigation algorithms. Detected faulty measurements, which are typically caused by high multipath or active ionosphere, are removed from the solution.

AIM+ anti-jamming and RF spectrum monitoring system

AIM+ offers built-in protection against intentional and unintentional jamming using a sophisticated system of sampling and mitigation mechanisms. Your high-precision GNSS receiver can automatically suppress the widest variety of interferers from simple continuous narrow-band signals to the more complex wide band and pulsed transmitters as well as lnmarsat and Iridium satellite transmissions  

Illustrative image for Septentrio mosaic-CLAS GNSS Receiver Web User Interface (WebUI)

Buy your mosaic-CLAS development kit today

Buy now

GNSS technology

BeiDou: B1I, B2I, B3I
Galileo: E1, E5b
QZSS: L1C/A, L1C/B, L2C, L6
5 constellation RTK (base and rover)

Septentrio patented GNSS+ technologies

AIM+ anti-jamming, anti-spoofing Advanced Interference Monitoring and Mitigation
More info


Unique anti-interference system monitors, flags and mitigates narrow and wideband interference, jamming and spoofing.

More info


Event markers
Initialisation time
7 s

Other positioning modes accuracy

Horizontal DGNSS
0.4 m
Vertical DGNSS
0.7 m

Time precision

xPPS out
More info

Incl. software compensation of sawtooth effect


Product datasheet

Support documentation

Product Change Notification 30 August 2022 - mosaic rev. 5
212.84 KB
mosaic Hardware Manual v1.9.0
3.72 MB

Log in below and download our product resources

By filling in this form, you agree to the processing of your personal data by Septentrio in accordance with our privacy policy for the purpose of providing you with the requested information and keeping you informed via e-mail of relevant webinars, invitations to events and exhibitions, the latest product technology and insight articles about the GPS/GNSS industry and technology. If you change your mind, you can unsubscribe at any time.