Development of Low-Cost GNSS Real Time Kinematic Positioning System

• Main Author: 李孟羲
• Other Authors: 吳順德
• Format: Others
• Language: zh-TW
• Published: 2017
• Online Access: http://ndltd.ncl.edu.tw/handle/hd96s6

碩士 === 國立臺灣師範大學 === 機電工程學系 === 105 === Currently the ordinary civil satellite positioning device such as mobile built-in GPS positioning clip cannot meet the application requirements such as measurement and monitoring due to its meter-above accuracy. GNSS RTK technology should be applied to improve the accuracy. Therefore, considering the capability and cost, the study is to focus on the construction of the overall architecture of single frequency and GNSS RTK. Commercial single frequency chip was used to achieve much lower cost. Meanwhile, GNSS real time kinematic positioning solvers were developed to solve the capability problem of single frequency RTK. As a result, the goal of low cost, high accuracy and high capability was achieved. In this study, two Global Navigation Satellite System (GNSS) receivers which can receive Satellite data from the GPS, GLONASS and Beidou were employed. One served as a reference station with serial network server to Ethernet server for transmitting data, and the other was taken for an rover station with self-designed and developed GNSS high-precision real time kinematic device for GNSS satellite data. Then, the satellite carrier phase observation data were transmitted to the server and the coordinates of observation station were achieved in centimeter-level positioning accuracy by the calculation of　Real　Time Kinematic system, which is developed with National Taiwan Ocean University Department of Communication, Navigation and Control Engineering. In addition, a real-time moving point location can be displayed on the mobile APP with 3G/4G network. Therefore, comprehensive applications can be operated with the help of position information, such as monitoring of dangerous slope, building displacement, bridge displacement and so on.