Method And Device For Determining Absolute Speed Of A Rail Vehicle

A method for determining absolute speed of a rail vehicle including onboard sensor devices and a signal processor, wherein the method includes the steps of detecting irregularities in the rail respectively on one front wheel set via a first sensor device and at least on a subsequent wheel set via another sensor device, and transmitting the sensor signals produced by the sensor devices to a signal processor configured to determine the absolute speed by analyzing the supplied sensor signals, where an estimation of the transfer function between a sensor is used, and where an FIR filter can, in this case, optimally reproduce the signal of one sensor via the signal of the other sensor in which the smallest square of the error is formed such that the time offset between both signals can be determined, from which the speed can be determined at a known distance of the sensor.