一种浮空器气囊体积测量装置的现场校准方法探讨

A Field Calibration Method for an Aerostat Ballonet Volume Measuring Device

介绍一种浮空器气囊体积测量装置的现场校准方法,通过设定现场校准区域,构建地面控制点的局部三维坐标;在被测对象侧边的6个地面控制点设立测站,用激光全站仪和棱镜组件按照极坐标法观察得到被测对象侧边精密标定杆上所有准校点的局部三维坐标,建立校准参考坐标系,构建完整的现场校准场。测量装置对在校准参考坐标系中的精密标定杆上校准点进行拍摄获得图片,解算得到测量装置的每个相机的外方位元素,得到其位置和姿态,完成校准工作。本文提出的现场校准方法解决了测量装置在任意场景下浮空器囊体体积测量的应用问题和测量装置使用中需要搬动情况下的校准问题。

This paper introduces the field calibration method of an aerostat ballonet volume measuring device,by setting the calibration area to construct local three-dimensional coordinates of ground control points. 6 ground control points are set up beside the object. With a total station and laser prism assembly in accordance with the polar coordinate method of observation,the local three-dimensional coordinates of the precision calibration bar beside the object are observed,a calibration reference coordinate system is set up,and a complete site calibration is constructed.The measuring device for calibration acquired images in the reference coordinate system of the precision calibration point bar,the solution of exterior orientation elements is obtained for each camera measurement device,and the position and attitude are obtained to complete the calibration work. This paper presents a field calibration method that solves the measurement device calibration problem,under the condition of moving measurement device in use in any scene and the application of aerostat envelope volume measurement.