ABSTRACT

In this study, three different procedures: checkpoint RMS of residuals, statistical evaluation of AT results using t-test, and comparison of a photogrammetric digital surface model (DSM) and LiDAR data are used to analyse the effect of IMU and GNSS uncertainties on the final adjusted results. The outcome suggests that the method of block-wise GNSS shift correction is the better method for aerial triangulation and one should use appropriate observable weights in AT. The comparison of checkpoint RMS residuals between the two methods shows that the block-wise solution is on average 6cm more accurate than the strip-wise solution.

中文翻译：

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使用不同外部方向参数权重的带状和块状空中三角测量的比较

摘要

在这项研究中，三个不同的程序：残差的检查点 RMS，使用 t 检验对 AT 结果进行统计评估，以及摄影测量数字表面模型 (DSM) 和 LiDAR 数据的比较，用于分析 IMU 和 GNSS 不确定性对最终调整结果。结果表明，逐块 GNSS 偏移校正方法是空中三角测量的更好方法，应该在 AT 中使用适当的可观察权重。两种方法的检查点 RMS 残差比较表明，分块解决方案平均比条带解决方案准确 6cm。