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Kalman Filtering Tutorial

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Odometry Error Covariance Estimation for Two<br />

Wheel Robot Vehicles (Technical Report MECSE-95-1, 1995)<br />

A closed form error covariance matrix is developed for<br />

(i) straight lines and<br />

(ii) constant curvature arcs<br />

(iii) turning about the centre of axle of the robot.<br />

Other paths can be composed of short segments of constant curvature arcs.<br />

Assumes wheel distance measurement errors are zero mean white noise.<br />

Previous work incrementally updates covariance matrix in small times steps.<br />

35

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