OptoAHRS-II - Optically Enhanced Attitude & Heading Reference System
Available from Inertial Labs Inc
Developed by Inertial Labs, the Optically-enhanced Attitude and Heading Reference System – OptoAHRS-II is a small size, lower power consumption, precise North-finding and North-keeping system. It combines technologies of inertial sensors with optical image tracking resulting in a robust and reliable 3DOF orientation module capable of operation in virtually any environment.
OptoAHRSTM-II works through the use of reference images. A reference image can be any picture of the horizon or nearby environment in a single direction. Within the reference image, the system identifies a constellation of visual features. From any subsequent image collected by the camera, heading is determined by comparing the new constellation of features back to that of the appropriate reference.
OptoAHRSTM-II Key Features:
➢ OptoAHRSTM-II eliminates large errors inherent with Digital Magnetic Compass technology;
➢ Hybrid North Finding and North Keeping System;
➢ Real-time optical and inertial sensors orientation tracking;
➢ Highly accurate, sensitive, and temperature stable Fluxgate magnetometers (in-house technology);
➢ Advanced, extendable, embedded Kalman Filter based sensor fusion algorithms;
➢ Embedded 2D and 3D magnetic calibration on hard and soft iron;
➢ Environmentally sealed (IP67).