A Motion Sensor also called an AHRS, provides real-time roll, pitch, and heading information that is used to aid the operator when maneuvering an ROV.

Without the attitude information, it could be difficult for an operator to figure out if the ROV is well-positioned.

Recommended products

Ellipse 2 Micro AHRS

Ellipse 2 Micro AHRS

Volume Application

Ellipse 2 Micro AHRS is a small-sized Attitude and Heading Reference System (AHRS).
It provides Roll, Pitch, and Heading based on magnetometers.

Ellipse Micro Series ››
  • 0.1° Roll and Pitch over 360°
  • 1° Heading (Magnetic-based)
  • Cost-effective & Small-sized
Ellipse-A

Ellipse-A

Motion Sensor

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

Ellipse Series ››
  • Easy-to-integrate
  • 0.1° Roll & Pitch
  • 0.8° Magnetic Heading
Pulse-40 IMU

Pulse-40 IMU

Highly Precise IMU Data

The Pulse-40 IMU is a small-sized tactical-grade Inertial Measurement Unit (IMU) that embeds low noise gyroscopes and accelerometers to deliver optimal performance in all conditions.

Pulse-40 IMU ››
  • Best SWaP-C: 12-gram, 0.3 W
  • Ultra-low noise gyro (0.08°/√h) with excellent bias instability (0.8°/h)
  • High Quality IMU calibrated from -40°C to 85°C

Ellipse 2 Micro AHRS

Volume Application

  • 0.1° Roll and Pitch over 360°
  • 1° Heading (Magnetic-based)
  • Cost-effective & Small-sized

Ellipse 2 Micro AHRS is a small-sized Attitude and Heading Reference System (AHRS).
It provides Roll, Pitch, and Heading based on magnetometers.

Ellipse Micro Series ››

Ellipse-A

Motion Sensor

  • Easy-to-integrate
  • 0.1° Roll & Pitch
  • 0.8° Magnetic Heading

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

Ellipse Series ››

Pulse-40 IMU

Highly Precise IMU Data

  • Best SWaP-C: 12-gram, 0.3 W
  • Ultra-low noise gyro (0.08°/√h) with excellent bias instability (0.8°/h)
  • High Quality IMU calibrated from -40°C to 85°C

The Pulse-40 IMU is a small-sized tactical-grade Inertial Measurement Unit (IMU) that embeds low noise gyroscopes and accelerometers to deliver optimal performance in all conditions.

Pulse-40 IMU ››

Case studies

Tips

If you choose a model which relies on magnetometers for heading information, it will be sensitive to iron. The inertial sensor should be mounted far from engine(s) and other magnetic disturbances.

The SBG on-board calibration tool allows calibration in water. It ensures a precise heading in all orientation by taking into account the real environment where the ROV will be operated.

The Inertial Measurement Unit (IMU) outputs gyroscopes, accelerometers, and magnetometers raw data. The Attitude and Heading Reference System (AHRS) embeds an Extended Kalman Filter (EKF) to deliver orientation data, and the Inertial Navigation System (INS) additionally embeds a GNSS receiver for a filtered position in real-time.