Research and implementation of roughness data processing based on GPS profile method

According to the GPS specification, a feasible solution for roughness data processing of profile method is proposed and the algorithm is realized by programming through the following steps: the nominal form in the measured data is eliminated by the best fitting least squares method; the Gaussian filter output function is discretized to realize the digital filter, and this Gaussian filter is used to filter out the noise, and the primary profile, roughness profile and waviness profile are derived by filtering.