Application Of UAV Photogrammetry System In Large Scale DEM And DOM Test Analysis

With the development of science and technology,computer technology and remote control equipment,the development of Unmanned aerial vehicle(UAV)technology is more and more rapid.The UAV is smaller in size and lighter in weight,and it can reach the area where people can't reach.Unmanned aerial vehicle(UAV)is more and more used in emergency system.In a small area of the image data acquisition speed is very fast.UAV can quickly map that provide a reliable basis for emergency rescue.Unmanned aerial vehicle(UAV)technology is used more and more widely,and its hardware and software requirements are more and more high,UAV flight control system,communication and data processing technology is becoming more and more mature.UAV is also more widely used in large scale mapping in the small area.Due to the restriction of the external environmental factors,the hardware equipment and the data processing methods,it is necessary to do further research and verification on the large scale mapping.In this paper,the TOPCON Sirius Pro UAV system was studied,the research present situation,mainly from the UAV system,image processing technology,work flow,the accuracy of map are introduced.According to Sirius Pro UAV in the test project of Guoluo Tibetan Autonomous Prefecture of Qinghai Province introduced Sirius Pro UAV production 1:1000 and 1:500 scale DEM,DOM work flow.The accuracy of these two scales is verified.The main research contents include:(1)This paper introduces the composition of TOPCON Sirius Pro UAV mapping system and data processing technology.This paper mainly introduces the method of using MAVinci Desktop control software of flight control system and the main operation flow of data processing software Agisoft PhotoScan.(2)Based on TOPCON Sirius Pro mapping system,by using real-time dynamic RTK technology and high precision measurement technology,data processing technology.Realize the use of UAV mapping system to produce 1:1000 and 1:500 scale of DOM,DEM.After the test verification,the DOM and DEM precision test shows that the DOM plane accuracy and DEM height accuracy of the system are in accordance with the relevant measurement specifications.(3)Comparative analysis of two kinds of large scale maps that use of TOPCON Sirius Pro making two-scale maps.The results show that the UAV mapping system breaks the traditional aerial photogrammetry method,and does not need to carry out the phase control points of the external operations,improve work efficiency and save costs.The process of digital processing is automatic processing.