Measurement and assess of gradient to evaluate the effect on real driving behaviour

A correct evaluation of pollutant emissions and fuel consumption by vehicles in real use and precisely geolocated in a road is an important activity and it is still open in the international scientific contexts. Several experimental campaigns were carried out with some cars instrumented for both the acquisition of kinematic data, polluting emissions in continuous, and GPS latitude, longitude and altitude data for the correct geolocalization and slope variation during a path. In the context of qualitative and quantitative study of correlation between kinematic sequences/emission/geographical position, the aim of this paper is an evaluation of the deviation between the raw altitude acquired by GPS and the reconstructed signal by means of a numerical method of GPS coordinates. Also cluster analysis of kinematic data is realized, keeping in mind new corrected GPS data