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条状和块状空中三角剖分的比较

摘要

在这项研究中，使用了三种不同的程序：残差的检查点RMS，使用t检验对AT结果进行统计评估以及比较摄影测量的数字表面模型（DSM）和LiDAR数据，以分析IMU和GNSS不确定性对测量结果的影响。最终调整结果。结果表明，逐块GNSS位移校正方法是更好的空中三角测量方法，并且应该在AT中使用适当的可观察权重。两种方法之间检查点RMS残差的比较表明，逐块解决方案比条带解决方案平均准确6cm。