A method for the fundamental improvement of inertial measurement systems by adding a solid-state photodetector and algorithms for processing video information is described. Improvement is achieved by zeroing accumulating errors via the image-based calibration of the device position. Experiments were performed at a sensor speed greater than 20 m/s. The calibration accuracy with respect to the reference point was 1 mm in terms of the position and less than a degree in terms of the sensor orientation. A prototype was developed with comparatively low power consumption (corresponding to a peak value not exceeding 1.5 W and average power consumption less than 0.2 W) and small size (with the total volume of the two boards equal to 7 cm3).
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