Software Analysis Of Provincial CORS System Control Center Software

At present,the technology and application of continuously operating reference station system is one of the hot topic in the research of Surveying and Mapping.In the world,Many countries and regions have set up their own CORS system one after another.The technical level of this system and the building engineering have been gradually mature by many years research and practice.It is a rigorous and.complex system engineering to establishment a CORS system,which included the whole process of the CORS system data acquisition,transmission,processing,correction,application.Firstly,this paper gives the definition of CORS system,introduces the basic principle and structure of CORS system.At the same time,this paper introduces several key RTK network technologies of CORS system,and the basic principle and the application of the technology in detail.In addition.Then introduces the error sources and the influence of CORS system,analyzes how to eliminate or weaken the error.Then this paper introduces the software structure and function which in the CORS system control center.The control center software is composed of five modules,the network of reference station module,the data processing module,the control center module,the data communication module and the user module.The data processing module and the control center module are the core of control center software of the whole CORS system.This paper elaborates the function of these modules and the relationship between them.In addition,introduces the transmission of data in these modules.At the end of this paper,three kinds of control center software which is widely used in China are selected and have been comparative analysised.Respectively according to the collected data accuracy,outside accuracy,time availability,space availability,initialization time,network delay and GNSS receiver compatibility have been analyzed in detail within the range of the data acquisition of the three control center software coverage.At the same time,made tests for the three kinds of control center software on the ability of networking,self operation ability,warning ability and monitoring ability.In this paper,some useful conclusions are obtained by analyzing the data collected from three different CORS systems.These conclusions have certain reference significance for the future CORS system construction,system testing,data analysis and so on.