A study about using of single frequency GPS recievers in geodetic applications

GPS has become one of the major part of the Geodetic applications and the usage of it is broadaning and spreading every passing day. According to these necessities, it is expected GPS recievers to get the economic results with convenient accuracy in a very short time.The aim of this study is to obtain the usage of the single frequency GPS recievers, which have much lower costs comparing with the dual frequancy GPS recievers and to analyze the useability of them especially in the geodetic applications. Additionally, this study indicates the performance of the single frequency GPS recievers comparing with the dual frequancy GPS recievers. After the evaluations, the effects of the different time intervals on the position accuracy are found and the connection between the frequency type-duration-distance by using the different types of frequancy are researched, thereby researching useability of the single frequency GPS recievers which have lower cost in geodetic applications is intended.8 bases with variable lengths 1 km to 38 km and datas which are belongs 6 days are used. Data of each day is divided into 1, 2, 4, 6, 8, 10 pieces of hours and evaluated independently. Afterwards it is studied on the effects of the measurement duration and base lengths on the position accuracy for the single and dual frequency GPS receivers.