Research on the Application of Non Prism Total Station in the Measurement

Non prism total station is a station without prism as cooperative target can measure distance. It is a combination of free ranging technology with traditional reflection prism total station instrument,and the advantages are irreplaceable in common with total station. The use of non-reflecting prism is more convenient and faster,realized the aim that is measured. Reflecting prism total station instrument has been widely used in the digital topographic map surveying and mapping,the determination of the object point accuracy specification accuracy requirements. In this paper,the principle of non-prism measurement of this new technology achievement precision were systematically elaborated and summarized.