Through Application of RTK technology into 1∶2 000 photo control survey in Zhuyong freeway,this paper introduced the solving method of datum transformation parameter and precision check of RTK survey result of the RTK survey in zonal survey area.

The working-organizing pattern, solving method for reference transition parameters, precision inspection of RTK surveying achievement and so on is introduced by applying RTK technique in scale 1∶2 000 status quo survey of land use in Linzi District.

If the operational misplay or dealing unsuitable with several technical problems in job, it would bring the strictness affection to the achievement because of RTK survey lacking of essential check condition yet.

Technological characteristics of RTK are introduced and analyzes the problem met in employing GPS instrument to carry on RTK measurement and solutions have been put forward in this paper.

This paper introduces the main RTK measurement error sources,in accordance with standardized measurement accuracy requirements,it proposed to replace four RTK measurements such as measurement and control of the plane,the four standard measurements to be taken measures to control the measurement error.

This paper analyses the error effect of coordinate conversion parameters,RTK heightsurveying under kinetic condition and the reliability on RTK surveying.

Through the analysis of RTK working principle,the shortcoming of single-station-single-sampling RTK surveying in practical application is known,so a new method of double-station-double-sampling is proposed.

Through the analysis of RTK working principle,the shortcoming of single-station RTK surveying in practical application is easy to cause systematic errors.

Based on fitted elevation estimating theory and analysis of true data in GPS-RTK measurement,it discussed the feasibility,the accuracy indicial assurance,the application and meaning of the subtitution of GPS elevation for substandard level.