Study On The Quality Control Of Unmanned Aerial Vehicle Aerial Mapping

The introduction of UAV in the field of surveying and mapping has brought tremendous changes.The combination of UAV and remote sensing,photogrammetry technology can obtain images rapidly due to its features such as convenience,high safety,and low cost,which can not be achieved for the traditional space remote sensing platform.It has become an effective complement to satellite remote sensing and traditional aerial photogrammetry,and has gained attention and extensive application in related fields.However,some factors such as quality of flight,quality of the image and camera parameters,it will affect the final mapping quality when low-altitude UAV photogrammetry is taken to collect data.Therefore,how to control the quality of aerial mapping is worth further research.After analyzing the influence factors of UAV aerial mapping quality,combined with the example of map making,the quality control of mapping is analyzed.1.In this paper,the flight quality parameters are analyzed according to the specifications.The flight quality check program is compiled through C#language and VS platform.The program has the functions of image and parameter setting,image reading,writing and display,automatic route recovery,image surface inspection,and calculation of flight quality parameters.It can be applied to the rapid inspection of UAV image,image rotation angle,aero band bending,image overlap,flight height difference,and the quality of the tilt angle of the image.2.By analyzing the influence of the factors such as tilt angle of photograph,base to height ratio,ground resolution,accuracy in measurement,image-forming system error on the mapping precision,the error propagation formula is obtained,which plays an important role in the quality of the later control.3.On the basis of the analysis of the theoretical knowledge of the key technology of mapping,taking the study area as an example,this paper studies the mapping precision of the large scale of the aerial survey,and combines the error propagation formula,and evaluates the measured accuracy by the calculated theoretical accuracy value,thus controlling the quality of the mapping.