Train speed measurement model parameter setting method

The invention relates to a train speed measurement model parameter setting method, which comprises the following steps of: periodically acquiring a train wheel rotating speed, a train radar speed and a vehicle-mounted satellite positioning system speed, and when satellite positioning speed measurement is effective, setting and calculating a wheel/train speed ratio adjusting model parameter and a train radar speed adjusting model parameter according to satellite positioning speed measurement data; when satellite positioning speed measurement is invalid, new train radar speed adjustment model parameters are calculated according to the set train radar speed adjustment model parameters and a given expression, and wheel/train speed ratio adjustment model parameters are set and calculated through the adjusted radar speed adjustment model parameters; and then the train speed, the creep degree change rate, the creep degree and the train wheel set speed change rate are obtained through calculation according to a wheel