@article{Januszewski_2017, author = {Januszewski, Jacek}, title = {Sources of Error in Satellite Navigation Positioning}, journal = {TransNav, the International Journal on Marine Navigation and Safety of Sea Transportation}, volume = {11}, number = {3}, pages = {419-423}, year = {2017}, url = {./Article_Sources_of_Error_in_Satellite_Navigation_Januszewski,43,741.html}, abstract = {An uninterrupted information about the user?s position can be obtained generally from satellite navigation system (SNS). At the time of this writing (January 2017) currently two global SNSs, GPS and GLONASS, are fully operational, two next, also global, Galileo and BeiDou are under construction. In each SNS the accuracy of the user?s position is affected by the three main factors: accuracy of each satellite position, accuracy of pseudorange measurement and satellite geometry. The user?s position error is a function of both the pseudorange error called UERE (User Equivalent Range Error) and user/satellite geometry expressed by right Dilution Of Precision (DOP) coefficient. This error is decomposed into two types of errors: the signal in space ranging error called URE (User Range Error) and the user equipment error UEE. The detailed analyses of URE, UEE, UERE and DOP coefficients, and the changes of DOP coefficients in different days are presented in this paper.}, doi = {10.12716/1001.11.03.04}, issn = {2083-6473}, publisher = {Gdynia Maritime University, Faculty of Navigation}, keywords = {Global Navigation Satellite System (GNSS), Satellite Navigation Positioning, Source of Errors, Satellite Navigation, Dilution of Precision (DOP), User Equivalent Range Error (UERE), User Range Error (URE), User Equipment Error (UEE)} }