Importance

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Abstract

An automatic timing measurement system provides a measure of time of passage of a watercraft through a prescribed course. Inertial or other estimates augmented by GPS speed/position measurements are used to track position of a watercraft. Position estimates are used to allow the locations of prescribed courses to be mapped and memorized. Passage of a watercraft is automatically detected through mapped courses for the purpose of measuring and reporting time of passage past key points in the course, and the speed of the apparatus may be modified if necessary at certain points in the mapped course. A measure of accuracy of driver steering can be provided along with the ability to automatically steer the watercraft through the course. GPS speed control is augmented with a secondary velocity measurement device that measures speed over water resulting in an optional user selectable real-time compensation for water current.

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First Claim