Multipath Effects in RTK GPS and A Case Study

摘要

Contemporary projects requiring real time positions with especially cm accuracies have begun to employ Real Time Kinematic GPS (RTK GPS) technique for its speedy and productive nature. As in all types of GPS techniques, RTK GPS is also vulnerable to multipath errors. The purpose of this study is to investigate this source of error. This study tries to answer some questions such as how much multipath error causes real time positioning error, and in what kind of environment this error is the most effective. A background on multipath error is first given and the environment causing this effect is widely researched, and then a test that brings out the most multipath error is conducted. The findings are presented, and conclusions and suggestions are included for future researches.