Research And Application Of DOM Production Technology Based On Uav Aerial Photography

In recent years,as a result of the need of quick and precision of surveying and mapping,UAV has advantages including Low-altitude, low-speed flying, good reliability, high security, high maneuverability and low cost,etc,so that images can be rapidly captured in a very short time.These are the advantages,which traditional remote sensing platform does not possess.It has became the effective complement of satellite remote sensing and traditional aerial photography measurement,and it has gotten attention and been widely used in various fields.Especially,it reached remarkable achievements in digital mapping for small area image acquisition and region of difficult condition.Research in processing images into a figure using UAV plays an important role in National Emergency Relief, Geographical Conditions Survey and Construction Of Digital City.This paper first analyses the technical characteristics and system of low-altitude uav aerial photography.It emphasizes the advantages in flexibility, mobility and short cycle compared with the traditional ways of remote sensing,becoming an important means of rapid access to high-resolution images.Emphatically analyzed the process of the UAV image DOM.And it introduces the key technology of UAV for remote sensing image in detail,which includes the design of flight route, the principle of control point layout requirements and the DOM light color processing, introduced the main quality indicators of UAV image.It stresses the necessity of image preprocessing and the importance of aerial triangulation based on the principle.Finally,this paper combines the project of high-resolution DOM production in ruijin city.The technology route analysis and project design of UAV for large scale aerial mapping was studied in practice combining with the characteristics of the study, considering the distribution of farmland with relief, in order to meet the demands of aerial results accuracy, completed the design of aerial plan of the study area and regional network as the control point layout.This paper makes a detailed analysis of the process of generating the surveyed area of arable land 1: 1000 orthophoto map based on the result of aerial triangulation,using DPGrid system for UAV navigation photograph preprocessing and aerial triangulation。...