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



With dual-antenna input, mosaic-H™ provides precise and reliable heading combined with centimeter-level RTK positioning. Dual antenna heading capabilities in such a small form factor opens the door to advanced automation and navigation performance in both static and dynamic states, with reduced power consumption. Dual antenna GNSS delivers heading & pitch or heading & roll angles, which are available immediately at startup, helping initilize inertial sensors which rely on movement for their attitude measurements. 


* Dual antenna support for sub-degree heading & pitch or heading & roll angles

*All-in-view satellite tracking: multi-constellation,multi-frequency

*Best-in-class RTK performance

*OSNMA Support

*AIM+ industry-leading anti-jamming anti-spoofing technology

*Lowest power consumption on the market

*Standard mosaic footprint enables several applicationspecific solutions based on a single design


Reliable heading performance With dual-antenna input, mosaic-HTM provides precise, reliable and positioning independent heading combined with centimeterlevel RTK. GNSS heading provides the best performance in both static and dynamic conditions removing the reliance on vehicle movent for INS initialization. It also provides an alternative to magnet-based heading sensors, which can be effected by metal. 

Designed for automated assembly

The mosaic-HTM is a single module delivering high-accuracy heading and positioning without the need for any additional components. It is designed for high volume production on automated assembly lines. 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 the highest 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: L1, L2

* Galileo: E1, E5b


* Beidou: B1, B2

* QZSS: L1, L2 


 SDCM (L1)

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 


GNSS heading


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 (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 out6


RTK performance 2,3,4

Horizontal accuracy       0.6 cm + 0.5 ppm

Vertical accuracy                  1 cm + 1 ppm

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

GNSS attitude accuracy 2,3

Antenna separation    Heading    Pitch/Roll

1 m                                   0.15°          0.25°

5 m                                   0.03°          0.05°

Maximum update rate

Measurements only                          100 Hz

Standalone, SBAS, DGPS + attitude  50 Hz

RTK + attitude                                   20 Hz


Latency4                                         <10 ms

Time precision

xPPS out6                                             5 ns

Event accuracy                               < 20 ns

Time to first fix

Cold start7                                        < 45 s

Warm start8                                      < 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 15-35 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 99.9%

6 Incl. software compensation of sawtooth effect

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

8 Ephemeris and approx. position known

9 Hardware ready

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