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Septentrio, GNSS receiver, UAV, GNSS module, mosaic X5, mosaic H, Ardusimple, sparkfun



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 enabeling 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).


* Small size, big performance

* Multi-constellation, multi-frequency including L6  CLAS support

* Best-in-class RTK performance

* OSNMA Support

* AIM+ unique interference monitoring and mitigation technology

* Industry-leading ultra-low power consumption

* Easy-to-integrate

* Japan's Centimeter Level Augmentation Service (CLAS) integrated



No performance compromises 

Sized at only 31 x 31 x 4 mm / 1.22 x 1.22 x 0.16 inches and weighing  only 7 g, mosaic-CLAS offers unmatched size to performance ratio. mosaic-CLAS includes:  

* High update rate (>100 Hz) and low latency, both crucial for  control systems of autonomous applications  

* Reliable centimetre-level positioning

* Full L2 support via P(Y) code

Designed for automated assembly

The mosaic-CLAS module is designed for high volume automated  assembly lines with minimal amount of additional components  required. All interfaces, commands and data messages are fully  documented. The RxTools software suite allows convenient  receiver configuration, monitoring, data logging and analysis.  Offline processing is easy via our GeoTagZ software and its SDK  library for PPK (Post Processed Kinematic). 

Advanced technologies inside 

Septentrio’s GNSS+ toolset enables accuracy and reliability in the  toughest conditions, allowing you to complete projects with high  quality and efficiency. It includes: 

* AIM+ the most advanced on-board interference mitigation  technology on the market (narrow and wide band, chirp  jammers).

* LOCK+ for robust tracking during high vibrations and  shocks. 

* APME+ multipath mitigation to disentangle direct signal and  those reflected from nearby structures.

* IONO+ provides advanced protection against ionospheric  disturbances.


GNSS technology

448 hardware channels for simultaneous tracking of all visible supported satellite signals1 :

* GPS: L1C/A, L2C, L2P


* Beidou: B1I, B1C, B3

* Galileo: E1, E5b

* QZSS: L1C/A, L2C, L6


Septentrio's patented GNSS+ technologies

*AIM+ interference monitoring and mitigation (narrow band, wide band, chirp jammers)

*IONO+ advanced scintillation mitigation

*APME+ a posteriori multipath estimator for code and phase multipath mitigation

*LOCK+ superior tracking robustness under heavy mechanical shocks or vibrations

*RAIM+ receiver autonomous integrity monitoring

OSNMA Support

5 constellation RTK (base and rover)


Septentrio Binary Format (SBF)

NMEA 0183, v2.3, v3.03, V4.0

RINEX v2.x, v3.x

RTCM v2.x, v3.x (MSM included)

CMR v2.0 (out/in), CMR+ (input only)


4 UART (LVTTL, up to 4 Mbps)

Ethernet (RMII/MDIO), 10/100 Mbps

USB device (2.0, HS)

SDIO (mass storage)

2 GPIO user programmable

2 Event markers1

1 Configurable PPS out7



RTK performance 2,3,4

Horizontal accuracy   0.6 cm + 0.5 ppm

Vertical accuracy              1 cm + 1 ppm

Initialisation time                               7 s

Other positioning modes accuracy 2,3

                            Horizontal       Vertical

Standalone                  1.2 m          1.9 m

SBAS                           0.6 m          0.8 m

DGNSS                        0.4 m          0.7 m

Velocity accuracy                         3 cm/s

Maximum update rate

Position                                       100 Hz

Measurements only                     100 Hz

Latency 6                                            <10 ms

Time precision

xPPS out7                                                 5 ns

Event accuracy                            < 20 ns

Time to first fix

Cold start8                                    < 45 s

Warm start9                                         < 20 s

Re-acquisition                                    1 s

Tracking performance (C/N0 threshold)

Tracking                                   20 dB-Hz

Acquisition                               33 dB-Hz


Free product lifetime upgrades




Type      SMT solderable land grid array

Size      31 x 31 x 4 mm / 1.29 x 1.29 x 0.15 in

Weight                             6.8 g / 0.24 oz


Antenna pre-amplification range

                                                 15-50 dB

Antenna bias voltage               3.0-5.5 V

                                      Build-in current

                                         limit (150 mA)

Input voltage                             3.3 VDC

Power consumption                0.6 W typ

                                               1.1 W max


Operating temp                  -40 to 85° C

                                           -40 to 185° F

Storage temp                      -55 to 85° C

                                           -67 to 185° F

Humidity   5% - 95% (non-condensing)

Vibration                         MIL-STD-810G

Certification   CE, RoHS, WEEE, ISO 9001-2015


1 Configuration dependent

2 Open sky conditions

3 RMS levels

4 Baseline <40 km

5 After convergence

6 99.9%

7 Incl. software compensation of sawtooth effect

8 No information available (no almanac, no approx position)

9 Ephemeris and approx. position known


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