Study on the Relationship between the Aerial Survey Accuracy of Rotor Unmanned Aerial Vehicle and the Number of Control Points in Industrial Zones

doi:10.13474/j.cnki.11-2246.2018.0203

Abstract

Abstract: In view of the complexity of the topography and surface features of industrial areas,and the inconvenience of the control point setting,the paper presents a method to study the relationship between the number of control points and the photogrammetric mapping accuracy in order to obtain the most accurate photogrammetric results with as few control points as possible.Taking the aerial photography of rotor unmanned aerial vehicle above a coal mine in Shandong province as an example,the flight height is set at 100 m,images of 245 spots taken,9 levels of the control point number,3,5,7,9,11,13,15,17 and 19,designed,and a reference group arranged to eliminate the error by the control point setting scheme.The analysis reflects that the result accuracy rises in direct proportion to the number of control points.When the control points are increased to 11,the vertical accuracy will reach a maximum and so will the horizontal accuracy if the number is 15.Therefore,this paper provides reference to the choice of the control point number for UAV photogrammetry in similar cases in future.

Key words: industrial zones, rotor unmanned aerial vehicle, photogrammetry, accuracy, the number of control points

CLC Number:

P231

ZHAO Yanling, TIAN Shuaishuai, ZHANG Jianyong, WANG Xin, YAN Haoyue, ZHANG Shuo. Study on the Relationship between the Aerial Survey Accuracy of Rotor Unmanned Aerial Vehicle and the Number of Control Points in Industrial Zones[J]. 测绘通报, 2018, 0(7): 24-28.

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