The Analysis of GPS Data in Different Observation Periods Using Online GNSS Process Services

International Journal of Environment and Geoinformatics

卷:4

Ekrem Tuşat¹ 

[1] Selcuk University, Cumra School of Applied Sciences, Department of Management Information Systems, 42075 Konya, TR;

关键词: GPS;    Geodetic networks;    Online processing services;   

DOI  :  

来源: DOAJ

【 摘 要 】

The usability and the accuracy of internet-based position determination services which have gained importancein recent years is one of the up-to-date subjects of studies. Online processing services have more advantagesthan commercial and scientific software; since they are easy to use, require less experience and free becausethey get quick results. In this study, GPS observation files in rinex format belonging to 6 stations wereevaluated using Auspos, Magic-GNSS and Opus services then the results were obtained. Three systemsshowed the similar results for the results obtained according to 24-hour measurement period. In the secondstudy, observation files were divided into 12, 6 and 2 hour groups and after the results were obtained they werecompared to 24-hour results. According to the reports, it was seen that the accuracy decreased as theobservation period got shorter. In all three systems, 24 and 12-hour observation accuracy occurs in cmmeasures. In 6 and 2 hour periods where the observation period is shorter, accuracy value reaches to 3-4 cm.According to these results, it is seen that although it generally depends on observation period, internet-basedposition determination services sustain adequate accuracy for basic geodetic network application that thetopographical engineering needs.

【 授权许可】

Unknown