Spatial FOG Dual

Spatial FOG Dual is a rugged GNSS/INS that provides accurate position, velocity, acceleration, and orientation under the most demanding conditions.

Roll & Pitch
0.01 °
Heading (GNSS)
0.01 °
Bias Instability
0.1 °/hr
Position Accuracy
10 mm
Spatial FOG Dual | Advanced Navigation

Spatial FOG Dual is an industry-proven GNSS/INS and AHRS. It combines high accuracy fibre optic gyroscopes, accelerometers, magnetometers, and a pressure sensor with a dual antenna RTK GNSS receiver. These are coupled in an AI-based fusion algorithm to deliver accurate and reliable navigation data. Spatial FOG Dual is compatible with our post-processing kinematic (PPK) software Kinematica.



High-Accuracy FOG

High-Accuracy FOG

Spatial FOG contains the EMCORE TAC-450 fiber optic gyro IMU, which provides very accurate inertial data, beyond the best MEMS technology available. This allows Spatial FOG to achieve very high accuracies and dead reckon without GNSS for extended periods of time. Despite the high accuracy FOG IMU, Spatial FOG has a very competitive price tag that is lower than many MEMS systems on the market.
AI Based

AI Navigation Algorithm

Spatial FOG features Advanced Navigation's revolutionary AI neural network sensor fusion algorithm. This provides accuracy of up to 10 times that of a traditional kalman filter. It was designed for control applications and has a high level of health monitoring and instability prevention to ensure stable and reliable data.

Trusted Reliability


Spatial FOG has been designed from the ground up for mission critical control applications where reliability is very important. It is built on top of a safety oriented real time operating system and all software is designed and tested to safety standards with fault tolerance in mind. The hardware is designed and manufactured to mil standards.

Dual Antenna | RTK GNSS

Dual Antenna RTK GNSS

Spatial FOG Dual contains a dual frequency RTK GNSS receiver that provides up to 10 mm accuracy positioning and supports all of the current and future satellite navigation systems, including GPS, GLONASS, Galileo, and BeiDou. Dual antenna heading provides high accuracy heading that is not impacted by magnetic interference and has no motion requirements.

Protocols Interfaces


Spatial FOG Dual features two general purpose input output pins and two auxiliary RS232/RS422 ports that support an extensive number of peripherals. Including odometer based input for ground vehicles, DVLs and USBLs for underwater navigation, NMEA input/output and more.




Horizontal Position Accuracy
0.8 m
Vertical Position Accuracy
1.5 m
Horizontal Position Accuracy (with SBAS)
0.5 m
Vertical Position Accuracy (with SBAS)
0.8 m
Horizontal Position Accuracy (with RTK or Kinematica PPK)
0.01 m
Vertical Position Accuracy (with RTK or Kinematica PPK)
0.015 m
Velocity Accuracy
0.005 m/s
Roll & Pitch Accuracy
0.01 °
Heading Accuracy
0.01 °
Roll & Pitch Accuracy (Kinematica Post Processing)
0.01 °
Heading Accuracy (Kinematica Post Processing)
0.01 °
Slip Accuracy
0.01 °
Heave Accuracy
2 % or 0.02 m (whichever is greater)
Hot Start Time
2 s
Internal Filter Rate
1000 Hz
Output Data Rate
Up to 1000 Hz



±10 g
Bias Instability
15 ug
Initial Bias
< 1 mg
Initial Scaling Error
< 0.03 %
Scale Factor Stability
< 0.04 %
< 0.03 %
Cross-axis Alignment Error
< 0.04 °
Noise Density
120 ug/√Hz
200 Hz


±490 °/s
Bias Instability
0.1 °/hr
Initial Bias
< 2 °/hr
Initial Scaling Error
< 0.01 %
Scale Factor Stability
< 0.02 %
< 0.005 %
Cross-axis Alignment Error
< 0.02 °
Noise Density
0.7 °/hr/√Hz
400 Hz


±8 G
Initial Scaling Error
< 0.07 %
Scale Factor Stability
< 0.09 %
< 0.08 %
Cross-axis Alignment Error
< 0.05 °
Noise Density
210 uG/√Hz
110 Hz


10 to 120 KPa
Bias Instability
10 Pa
Initial Bias
< 100 Pa
Noise Density
0.56 Pa/√Hz
50 Hz


Advanced Navigation Aries
Supported Navigation Systems
GPS L1, L2 • GLONASS L1, L2 • GALILEO E1, E5b • BeiDou B1, B2
Supported SBAS Systems
Update Rate
Up to 20 Hz
Hot Start First Fix
2 s
Cold Start First Fix
30 s
Horizontal Position Accuracy
1.2 m
Horizontal Position Accuracy (with SBAS)
0.5 m
Horizontal Position Accuracy (with RTK)
0.01 m
Velocity Accuracy
0.05 m/s
Timing Accuracy
20 ns
Acceleration Limit
4 g


RS422 (RS232 optional)
4800 to 10M baud
AN Packet Protocol or NMEA
Peripheral Interface
2x GPIO and 2x Auxiliary RS232
GPIO Level
5 V or RS232
GPIO Functions
1PPS • Odometer • Stationary • Air Data Input • NMEA input/output • Novatel GNSS input • Trimble GNSS input • AN Packet Protocol input/output • Packet Trigger Input • Event Input


Operating Voltage
9 to 36 V
Input Protection
-40 to 100 V
Power Consumption (Typical)
6.1 W
Hot Start Battery Capacity
> 48 hrs
Hot Start Battery Charge Time
30 mins
Hot Start Battery Endurance
> 10 years
Operating Temperature
-40 °C to 75 °C
Environmental Protection
IP67 • MIL-STD-810G
36,000 hrs
Shock Limit
40 g 11 ms
12 g
94 x 94 x 98 mm
740 grams


18 Apr 2024 - V1.3
Reference Manual (PDF)
14 Nov 2023 - V1.7
3D Model
07 Aug 2015 - V1.0


Spatial FOG Manager

Spatial FOG Manager is the software provided for testing, configuration and logging with Spatial FOG Dual. Java 11 is required to run Spatial FOG Manager v7.0 and later. Adoptium JRE 11 is the recommended Java installer. Please see the reference manual for more information.

9 Apr 2024 – V7.3

Spatial FOG Dual Firmware

Firmware for all Spatial FOG Dual hardware versions. This can be loaded onto Spatial FOG Dual using the Spatial FOG Manager software. The change log can be found in the Spatial FOG Dual reference manual.

24 Jan 2023 – V1.71

Spatial FOG Dual SDK

The Spatial FOG Dual SDK provides example source code for interfacing with Spatial FOG Dual through the AN Packet Protocol. The languages provided are C/C++, Java, and .Net C#.

09 Jan 2023 – V7.0

Spatial Manager for Android

Spatial Manager for Android is available in the Android play store. A Bluetooth dongle is required which can be purchased by contacting [email protected].


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