SBG Ellipse-A Miniature AHRS

SBG Ellipse-A: Miniature AHRS

The Ellipse-A is a lightweight high-performance Attitude and Heading Reference System (AHRS) from SBG Systems. Factory calibrated from -40 °C to 85 °C, this robust inertial motion sensor provides Roll, Pitch, Heading and Heave data.



The Ellipse-A from SBG Systems embeds a best in class magnetic calibration procedure for optimal heading and is suitable for low to medium dynamic applications. It calculates movement using a MEMS-based Inertial Measurement Unit (IMU) and provides accurate orientation information.

The Ellipse-A offers Advanced Filtering, sound calibration and allows you to set desired motion profiles accordingly. It combines three gyroscopes, three magnetometers and three accelerometers to provide information in both, static and dynamic conditions.

The Ellipse-A is suitable for Marine, Land and Aerospace applications. An OEM version is available for a more robust and simple integration module.


  • 0.1° Roll and Pitch over 360°
  • 0.8° Heading (Internal Magnetometers)
  • 5 cm Real-time Heave
  • Very Low Noise Gyroscopes
  • Efficient Vibrations Handling
  • ITAR Free
  • Available in a Light Enclosure (OEM)
  • Full Development Kit

Technical Specifications

Pitch & Roll:0.01°
Heading:0.8 ° Magnetic
Heave Accuracy:5 cm or 5% – Valid for Marine version
Heave Period:Up to 15 s – Automatically adjusts to the wave period
Gain Stability:1000 ppm
Non-linearity:1500 ppm
Bias Stability:± 5 mg
Random Walk:57 µg/√Hz
Gain Stability:500 ppm
Non-linearity:50 ppm
Bias Stability:± 0.2 °/s
Random Walk:0.15 °/√hr
Gain Stability:< 0.5 %
Non-linearity:< 0.1 % FS
Bias Stability:± 1 mGauss
Random Walk:3 mGauss
Size:46 mm x 45 mm x 24 mm (Box)
Weight:45 g (Box)
Input Voltage:5 – 36 V
Power Consumption:< 460 mW
Specified Temperature:-40 °C to 85 °C (-40 °F to 185 °F)
Shock Limit:2000 g
Operating Vibration:8 g RMS (20 Hz to 2 k Hz per MIL-STD 810G)
IP RatingIP68
MTBF:50,000 hours



All products from SBG Systems come with a 2-year warranty. This warranty can be extended up to 5 years. The warranty is covered in more detail in the SBG Services page.

Why Buy from Us?

In business since 2004, Canal Geomatics is an authorized dealer for SBG Systems and has established itself as an industry-leading distributor of high-precision positioning products in North America. Our mission is to find the best solution for each unique application and extend premium support to ensure the long-term success of our customers. We offer both volume and reseller discounts for the majority of our product lines.


The Ellipse-A Miniature AHRS from SBG Systems is available through Canal Geomatics. If you would like more information about this product, please get in touch with us by completing the Request Pricing form.