Apllication Research Of CORS And PDA In Pipeline Survey Of Binjiang Avenue In Fuling, Chongqing

The management of urban underground pipeline has become the most important part of urban management.The survey of urban underground pipeline data has also become one of the hot topics of engineering survey.In the measurement technology of urban underground pipeline,only GNSS RTK method and total station method have their own shortcomings.The new technology of CORS and PDA can better solve these problems.This paper introduces the development history and current situation of CORS,All station and PDA through the brief introduction of conventional measurement technology,and describes its technical method applied to the measurement of urban underground pipeline,and expounds its applicability,feasibility and advantages compared with other conventional methods in theory.Taking the general survey of Binjiang road in Fuling,Chongqing as an example,the project is briefly introduced,and the application of CORS and total station+PDA method in this project is introduced in detail.The feasibility,applicability and advancement of the method in urban underground pipeline survey are demonstrated from the practical point of view through the analysis of the actual application effect and the accuracy of the project results.From the perspective of Surveying and mapping engineering,this paper mainly discusses the effect,advantages and disadvantages of the application of new technology in practical engineering.Through the discussion of examples,this method uses CORS technology for control measurement and All station and PDA Technology for pipeline point measurement,which can avoid the shortcomings and shortcomings of conventional measurement methods and complete the measurement of urban underground pipeline well.Even though there are still some deficiencies,at this stage,this is the best measurement technology method for underground pipeline measurement project.