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ABSTRACT£ºThe present paper is mainly introduced GPS(RTK) the basic principle, the system composition, the technical characteristic, the error source and the application method and the sequence of operation, and carry on a lofting, the curve lofting as well as using GPS(RTK) in the project survey carry on the boundary point survey in the cadastration, carries on the precision analysis to the measurement result. Through to the lofting and the boundary point precision analysis, has obtained the GPS(RTK) measuring accuracy is may achieve the project lofting and the boundary point survey precision request conclusion, and explained through the project example GPS(RTK) has the working efficiency high, the pointing accuracy high, the all-weather work, data-handling capacity strong and the operation simple easy to use and so on the characteristics. Elaborated us through this article to understand how used GPS(RTK) to carry on the project lofting and the boundary point survey, and was GPS(RTK) has carried on the proof in the project lofting and the boundary point survey feasibility, has developed GPS(RTK) in the survey domain application scope, strengthened has used GPS(RTK) the actual operation ability, will undertake the more surveying work for later to lay the foundation.

Key words£ºGPS(RTK)£»Project lofting£» Lofting£»Curve lofting£»Cadastration£» Boundary point

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