Compact multi-frequency GNSS timing receiver module

  • Dedicated timing features and inputs for time and clock synchronization
  • All-in-view satellite tracking: multi-constellation, multi-frequency
  • Best-in-class reliability and security for precise and accurate timing
  • NMA (Navigation Message Authentication) for all 4 GNSS constellations concurrently with optional AtomiChron™ service
  • Accuracy: <1ns to Fugro AtomiChron™ timescale (independent of world-wide location) with optional AtomiChron™ service
  • AIM+ advanced anti-jamming, anti-spoofing technology with unique interference monitoring and mitigation 
  • Advanced GNSS+ algorithms for robust operation
  • Industry-leading ultra-low power consumption
  • Easy-to-integrate and optimized for automated assembly

Septentrio mosaic-T is a multi-band, multi-constellation GNSS timing receiver design specifically for providing the highest security and availability for mission critical infrastructure and other resilient timing applications. 

The mosaic-T is a low power surface mount module with a wide array of interfaces and dedicated timing inputs for time and frequency synchronization. It offers superior availability by tracking all Global Navigation Satellite System constellations (GNSS) and their current and future signals.

With unique built-in AIM+ technology for anti-jamming, anti-spoofing, interference mitigation Septentrio offers a highly resilient and precise timing receiver in a very small form factor.

With optional AtomiChronTMservices, mosaic-T is providing 4 constellation NMA for superior anti-spoofing and precise timing reaching sub nanosecond precision.


Try your mosaic-T dedicated timing module development kit today

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AIM+ anti-jamming and RF spectrum monitoring system

The mosaic-T features AIM+ Advanced Interference Monitoring and Mitigation, offering built-in protection against intentional and unintentional jamming and spoofing using a sophisticated system of sampling and mitigation mechanisms. The stationary nature of critical infrastructure makes it vulnerable to jamming or even to spoofing attacks. Jamming occurs when GPS signals are overpowered by illegal devices called “jammers”, which could for example be used in passing by vehicles to avoid road tolling. Spoofing is a malicious form of jamming where an attacker sends fake signals into the receivers. AIM+ offers protection against both jamming and spoofing for robust and resilient timing in any environment.


GNSS+ Technologies – top performance in challenging environments

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.

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.



The mosaic-T timing module GNSS receiver comes with fully-documented interfaces, commands and data messages. The included RxTools software allows receiver configuration, monitoring as well as data logging and analysis.

Intuitive web user interface

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

Try your mosaic-T dedicated timing module development kit today

Buy now

The mosaic-T includes an intuitive web user interface for easy operation and monitoring allowing you to control the receiver from any mobile device or computer. The web interface also uses easy-to-read quality indicators ideal to monitor the receiver operation during the job at hand.


GNSS technology

GPS: L1C/A, L1PY, L2C, L2P, L5
Beidou: B1I, B1C, B2a, B2I, B2b, B3I
Galileo: E1, E5a, E5b, E5 AltBoc, E6
QZSS: L1C/A, L1C/B, L2C, L5
NavIC: L5

Septentrio’s patented GNSS+ technologies

AIM+ 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
Frequency sync input
10 MHz

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
Support notification 24 Feb 2022 - Upgrade recommendation to latest version of mosaic firmware
181.13 KB
mosaic Hardware Manual v1.9.0
3.72 MB

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