| Abstract [eng] |
This paper is a study of GPS operating principles from satellites to user-accessible signals. The examination is done by taking into account all the possible errors and how they are corrected in order to make the system more accurate. After system operation analysis tests of GPS data accuracy are made. The position of a point is measured using several GPS receivers. Those receivers are made by different manufacturers, so we can observe the dependency of accuracy according to manufacturer and different number of processor channels. It appeared that receivers have very similar errors. The work is continued by data accuracy improvement algorithms analysis. Finally an algorithm is suggested to improve positioning data precision moving on map and predict the event of a failure to communicate with satellites. |
