Detection of Rotation Axis Error of the Zenith Camera with Large Field of View
The accurate acquisition of vertical reference information of the station is the basis for high-precision ce-lestial positioning orientation,and must be achieved by compensating for the axis error of the measuring equipment.A detection method of rotation axis error for large field of view zenith camera is studied.The mapping relationship between the rotation axis error and the coordinates of the point image of the same name is given by obtaining the image before and after the measurement device rotates 180° around the rotation axis.Then the standard solution model of the rotation axis error is constructed,and an improved model is proposed through error analysis.Simula-tion experiments show that the solution model can effectively detect the rotation axis error,and after improved mod-el processing,the calculation accuracy of the horizontal angle is increased by 26%,and the calculation accuracy of the height angle is increased by 15%.
万方数据
维普
