A new generation FOG has arrived

Spatial FOG Dual is not recommended for new designs. Boreas A50 & D50 now available.

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Spatial FOG Dual (NRND)

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

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Datasheet

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.

Key Dates for Product End of Life Program

Jan 12, 2026: Not recommended for new design (NRND) – Notification period.

July 13, 2026: Last Time Buy (LTB) – Last date to place final orders for Spatial FOG Dual.

July 13, 2027: Last Time Ship (LTS) – Final manufacturing run and delivery.

July 13, 2028: End of Support – Engineering and technical support ends.

Features

Applications

Specifications

Downloads

Features

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 Navigation Algorithm

Spatial FOG features Advanced Navigation’s revolutionary AI neural network sensor fusion algorithm. It was designed for control applications and has a high level of health monitoring and instability prevention to ensure stable and reliable data.

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

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.

Peripherals

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.

Applications

Marine Surveying
Land Surveying
UGVs
Helicopters
Antenna Targeting
Motorsport
Robotics

Specifications

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)
Range
Unlimited
Hot Start Time
2 s
Internal Filter Rate
1000 Hz
Output Data Rate
Up to 1000 Hz

Accelerometers

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

Gyroscopes

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

Magnetometers

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

Pressure

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

Model
Advanced Navigation Aries
Supported Navigation Systems
GPS L1, L2 • GLONASS L1, L2 • GALILEO E1, E5b • BeiDou B1, B2
Supported SBAS Systems
WAAS • EGNOS • MSAS • GAGAN • QZSS
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

Interface
RS422 (RS232 optional)
Speed
4800 to 10M baud
Protocol
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
MTBF
36,000 hrs
Shock Limit
40 g 11 ms
Vibration
12 g
Dimensions
94 x 94 x 98 mm
Weight
740 grams

Downloads

Datasheet

Version 1.4

Sep 2024

View Online

Reference Manual

Version 1.9.1

4 Aug 2025

View Online

3D Model

Version 1.0

7 Aug 2015

Download

INS Manager – Desktop

Version 8.0

04 Dec 2025

Download

INS Manager – Deskop is used for testing, configuration, firmware management and logging with Advanced Navigation’s INS devices.  Java 11 is required to run INS Manager – Desktop. Adoptium JRE 11 is the recommended Java installer. Refer to respective INS Manuals for the user guide.

Spatial FOG Dual Firmware

Version 1.8

07 Jul 2025

Download

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.

Spatial FOG Dual SDK

Version 7.3

28 Aug 2024

Download

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#.

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