基于天绘影像的无控空中三角测量技术探讨

Technical Discussion of Non-control Aerial Triangulation Based on the Mapping Satellite Image

结合某测区天绘影像无控空中三角测量的任务,在分析无控空中三角测量技术流程的基础上,针对天绘卫星影像的特点,对自由网平差之前的连接点选择与调整、空三前后的精度检测等关键步骤的技术要点进行了探讨。本文所讨论的技术流程和方法均在此次空三任务中得到了较好的运用与验证。

Combined with the task of non-control aerial triangulation in one surveying area,this paper analyzed the process of non-control aerial triangulation,then according to characteristics of mapping satellite image,discussed the main technical points of non-control aerial triangulation： the connecting points selection and adjustment before free net balancing,precision testing before and after aerial triangulation etc,technical process and methods discussed in this paper are well used and validated in the task of non-control aerial triangulation.