Patent ID: 9052391
Filing Date: 2015-06-09
Classification: G01C,G01P,G01S,G06F

Abstract:
1. A method of estimating velocity of a machine, comprising: receiving, from a locating device, a location signal indicative of a location of the machine; estimating, by a processor, the velocity of the machine based on a change in the location of the machine indicated by the received location signal over a period of time; determining, by the processor, a loss of the location signal; detecting, by the processor, a traction device speed of the machine; detecting, by the processor, an acceleration of the machine; detecting, by the processor, steering of the machine; determining, by the processor, whether the traction device speed is unreliable, wherein the traction device speed is determined as unreliable when the detected steering exceeds a predetermined threshold; and when the location signal is determined to be lost and the traction device speed is determined to be unreliable, estimating, by the processor, the velocity of the machine based on the detected acceleration.