Ellipse2-A: Miniature AHRS

HomeEllipse2-A: Miniature AHRS

Ellipse2-A is a small-sized high performance Attitude and Heading Reference System (AHRS). It provides Roll, Pitch, Heading, and Heave data.

This light-weight sensor (45 grams) includes a MEMS-based Inertial Measurement Unit (IMU) integrating three gyroscopes, three magnetometers, and three accelerometers. Running an extended Kalman filter (EKF), the Ellipse-A provides accurate orientation data in both static and dynamic conditions.

High Accuracy for Such a Small Sensor:

  • 0.1° Roll and Pitch over 360°
  • 1° Heading (Internal Magnetometers)
  • 5 cm Real-time Heave, adjusted to the wave period

Key features:

  • Very Low Noise Gyroscopes
  • IP 68 Enclosure
  • 200 Hz Output Rate
  • RS-232, RS-422, and CAN Interfaces
  • Binary, NMEA, ASCII, and TSS Protocols
  • 2 years warranty

Download PDF

Ellipse Series Leaflet

Highly Rugged to Vibrations and Magnetic Disturbances

  • Vibrations: Internal FIR filters coupled with Coning & Sculling integrals to provide efficient vibration rejection.
  • Calibration: Intensively tested and calibrated from -40 to 85°C for consistent data in all conditions (the Calibration Report is shipped with the sensor).
  • Iron Disturbances: Ellipse sensors are highly rugged to magnetic disturbances. To go even further, a magnetic calibration tool is embedded in the inertial sensor. It allows quick in-field soft and hard magnetic disturbances compensation.
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