Knowledge of the static and morphodynamic components of the river bed is important for the maintenance of waterways. Under the action of a current, parts of the river bed sediments can move in the form of dunes. Recordings of the river bed by multibeam echosounding are used as input data within a morphological analysis in order to compute the bedload transport rate using detected dune shape and migration. Before the morphological analysis, a suitable processing of the measurement data is essential to minimize inherent uncertainties. This paper presents a simulation-based evaluation of suitable data processing concepts for vertical sections of bed forms based on a case study at the river Rhine. For the presented spatial approaches, suitable parameter sets are found, which allow the reproduction of nominal dune parameters in the range of a few centimetres. However, if parameter sets are chosen inadequately, the subsequently derived dune parameters can deviate by several decimetres from the simulated truth. A simulation-based workflow is presented, to find the optimal hydrographic data processing strategy for a given dune geometry.

了解河床的静态和形态动力学组成部分对于维护水道很重要。在水流的作用下，部分河床沉积物可以沙丘的形式移动。通过多波束回声法记录的河床被用作形态分析中的输入数据，以便使用检测到的沙丘形状和偏移量来计算河床的输水速度。在形态分析之前，必须对测量数据进行适当的处​​理，以最大程度地减少固有的不确定性。本文基于莱茵河的案例研究，对基于床身垂直剖面的合适数据处理概念进行了基于模拟的评估。对于提出的空间方法，找到了合适的参数集，允许在几厘米范围内重现名义沙丘参数。但是，如果参数集选择不当，则随后导出的沙丘参数可能会与模拟的真实情况相差几分之十。提出了基于仿真的工作流程，以找到给定沙丘几何形状的最佳水文数据处理策略。