Abstract: With the development of economy, the request of large scale topographic map is more and more high, and the production efficiency and accuracy of the traditional aerial technology can not meet the requirements. In this experiment, through the research of DGPS Real-time Kinematic and data post-processing, the key techniques such as the data precision is improved. Fixed-wing UAV aerial photography system is used in mountainous hilly and urban residents area for two kinds of complex terrain 1:500 large-scale DOM and DEM production. The precision examination showed that its precision completely meets the requirements of 1:500 large-scale DOM and DEM. At the same time the field control is not needed for the traditional aerial image production the production efficiency is greatly improved.

Key words: UAV, GPS real-time kinematic, DEM, DOM