Time distribution of the GPS signal tropospheric delay during passage of the warm front

The paper presents the results obtained by computer simulation of the timedistribution of GPS tropospheric delay, based on the appropriate model of tropospheric delay and weather data gathered during the passage of a warm front. The following basic weather parameters of the lower troposphere layers were measured: absolute air temperature, atmosphere pressure and relative air humidity. The results of simulation inicate that the value of troposphercdelay has limited dynamics even during marked weather changes, and for the road navigation requirements it may be considered a systemic error in locating the position with approximately constant value.