Dead reckoning navigation system has autonomous speed and course determination, two optimal filters for providing corrections for error models from speed vectors and course angles

摘要

The system has a first optimal filter for calibrating an autonomous speed sensor arrangement, which receives only a speed vector determined autonomously in a reference coordinate system and an independently determined speed vector. A second optimal filter for course angle support and calibration of the autonomous course angle receives only a corrected course angle and a course angle derived by the independently determined speed vector. The optimal filters provide corrections for error models.