大视场电视经纬仪摄像系统的标定研究

利用电视经纬仪的跟踪测量功能，以平行光管作为目标，实现了对摄像系统重要参量的精密测量.结合高准确度轴角编码器，可以对焦距进行标定.通过方位和俯仰方向的角位移，利用镜头畸变的轴对称性，可以确定光轴的位置.对整个视场进行抽样采点，得到一个畸变的网格场，通过拟合得到畸变系数，可以进行高准确度畸变修正.

Calibration of Camera System of TV Theodolite

The important parameters of camera system of TV theodolite have gotten with itself azimuth and pitching angle measure function.Camera focus can be measured through changing a little angle with constant target.Image center was gotten through comparing distances of target points in image because of symmetry of lens distortion.Through moving azimuth and pitching angle a distortion net of whole image was built.Then distortion model was set up with different models.