摘要
VRS(Virtual Reference Station)能够有效克服常规RTK固有的缺陷。介绍了VRS系统的组成及基本原理,描述了VRS/RTK的实现过程,通过与传统的RTK技术比较,分析了VRS/RTK的优势和优点,通过线性内插法推导了虚拟参考站相位观测值计算过程,给出了VRS接入规则,采用Internet与GPRS无缝链接技术在PC和PDA平台分别开发了VRS通用接入模块,使非VRS的GPS接收机在系统下实现差分。系统测试结果表明:基于VRS的GPS实时差分定位精度达到了厘米级,精度分布比常规RTK更均匀。
VRS concept is an efficient method to overcome the shortcoming of traditional GPS Real Time Kinematic （RTK）. The primary principle and structure of VRS system is introduced, while the advantages of VRS/RTK are displayed. In the paper, A new error-interpolated method is adopted to calculate virtual observation data of virtual reference station. The data communication rule based on NTRIP is presented for VRS system. A data transmission module is designed for all kind of GPS receiver so that VRS/RTK can be realized in Non-VRS GPS receiver. Testing results demonstrated that the VRS/RTK offers better and more even positioning precision than traditional RTK.
出处
《电子测量与仪器学报》
CSCD
2006年第6期21-25,共5页
Journal of Electronic Measurement and Instrumentation
基金
国土资源部"十五"重点科技资助项目(编号:200210102)
