Based on actual project,authors introduce the principle and method of applying coordinates virtual calculation method into locating spherical joints at three dimensions in the construction of space truss,and some measures of ensuring the measurement accuracy of total station without cooperation are discussed.

Then,based on the difference in prediction mechanisms,the existing research on distance prediction is classified into three types:the virtual coordinate based prediction mechanism,the network topology based prediction mechanism and the network proximity estimation mechanism.

The construction and setting-out of ellipse buildings base on the coordinate calculation method;

On new curve coordinate calculation method

Combining with the practice of highway engineering,making the best of formulas and functions in Excel and making use of plain nesting formula,the paper provides the document template of coordinate calculation of one by one stakes of center line in highway engineering to calculate the coordinate of general highway alignment.

The system includes control survey data calculation,leveling survey data calculation,multi-mode intersection survey data calculation,coordinate transformation,multi-mode setting-out data calculation,and map subdivision number calculation,etc.