The Research On The VRS Of GPS Network RTK

GPS Network RTK technology is a long-distance, high-precision real-time positioning technology which developed in recent years, it represents the future direction of development of GPS. Because of GPS network RTK operation with a wide range of high positioning accuracy, good stability, etc., so it has a wide range of applications. How to obtain high-precision error correction is one of the main problems that must be resolved recently.In this paper, how to obtain high-precision integrated error correction for a more systematic study. This paper studies as following:1. Description of research background and systemic intruduction and summarize for related basic research,which lay the foundation for the research. The main content involve the following: concept of GPS/VRS and the aim of research .At the same time ,having the instruction for the status of research and operation in homeland and abroad;2. Study of the GPS/VRS composition and the basic principles, detailed analysis of the impact of GPS/VRS positioning accuracy of a variety of distance-related error (including the tropospheric delay error, ionospheric delay error, tracking error, etc.), and made applicable model for correction the GPS/VRS error;3. Study of the GPS/VRS integrated error correction generation algorithm, and through examples of calculation of GPS/VRS two commonly used error correction generation algorithm:interpolation method and linear interpolation combination method to do a comparison;4. Study of the GPS/VRS positioning accuracy of the algorithm and the process of VRS positioning and analysis of initial location of the mobile station for the positioning accuracy.