What does the total value of surveying and mapping services include?

Geodetic surveying and aerial photography. The total value of surveying and mapping services is calculated according to the financial statistical data of each unit, and the analysis should focus on financial expenditure, including geodesy, surveying and mapping aerial photography, aerial photography and remote sensing. Surveying and mapping service is to calculate the ownership boundary and area of real estate registration through GpS software 2000 coordinates.