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. By incorporating optical orientation data into the sensor fusion solution, the device can be resilient against changes in magnetic interferences present in the environment during operation. Each of the technologies compensate for each other’s deficiencies and errors, acting as a self checking and calibrating system. For example, if a magnetic change is sensed, but the camera and accelerometers see no change - the magnetic change is ignored.

 Applications: 

• Land Survey; 

• Geodesy and Cartography;

• Crane Safety and Control Systems; 

• Geospatial Systems; 

• Oil & Gas Drilling; 

• Antenna Pointing Systems; 

• Platforms for North-Finding and North-Keeping.