Abstract: UAV aerial survey is a new emerging technology of surveying and mapping, which is in good graces of the production units of surveying and mapping for its advantages of high surveying efficiency,small ground constraintsand and automatic mapping. This paper describes the application of Topcon Sirius UAV aerial survey in coastline surveying and mapping of the Yangtze river of Taizhou. High resolution images, digital elevation model and digital terrain model have been generated, and the accuracy analysis of the result shows that the aerial survey can meet the requirements of large scale mapping, which provides a new method for coastline surveying and mapping of the Yangtze River.The practice has a good guidance and reference function for UAV aerial survey.

Key words: unmanned aerial vehicle, aerial surveying, image free control