The monitoring of dust devils using only a meteorological station is limited by the size/distance degeneracy that affects the acquired time series. It is not possible to retrieve directly information on their morphology, translational motion, distance of passage and vortex intrinsic parameters as the core pressure drop and maxima rotational speed.

We propose a simple model to estimate the distance of passage (commonly referred to as impact parameter) of the dust devils encounters from the station, monitored using a 2D anemometer. Our technique is based on the study of an easily recognizable feature of the signal trend, univocally connected to the vortex distance of passage.

In order to test the model, we have analyzed the measurements acquired during a Sahara field campaign. Our meteorological station was equipped with a camera, to compare the modeled distances with the ones obtained from the images. For all the acquired events the experimental results are in good agreement with the model. Overall, we observed dust devils passing between 3 m and 150 m from the station, assessing the reliability of the technique over a wide range of distances.

The evaluation of the impact parameter allows to fully characterize the meteorological encounters and to retrieve the vortex intrinsic parameters. The simplicity of the procedure makes it a powerful tool in the study of the relations among different vortex features (e.g., dust concentration and induced electric field) and their dependence on the distance from the station, easily applicable to past and future terrestrial and martian surveys.

仅使用气象站来监视尘土的能力受到影响所获取时间序列的大小/距离退化的限制。无法直接获取有关它们的形态，平移运动，通过距离和涡旋固有参数（如核心压降和最大旋转速度）的信息。

我们提出了一个简单的模型，用于估算使用2D风速计监测的尘埃从站经过时所经过的距离（通常称为撞击参数）。我们的技术基于对信号趋势的易于识别的特征的研究，该特征明确地与通道的涡旋距离相关。

为了测试模型，我们分析了在撒哈拉沙漠野战期间获得的测量结果。我们的气象站配备了一个摄像头，用于将模拟距离与从图像中获得的距离进行比较。对于所有获得的事件，实验结果与模型都非常吻合。总体而言，我们观察到尘埃离站的距离在3 m至150 m之间，从而评估了该技术在较宽距离范围内的可靠性。

冲击参数的评估可以全面表征气象遭遇，并获取涡旋本征参数。该程序的简单性使其成为研究不同涡旋特征（例如，尘埃浓度和感应电场）之间的关系以及它们与测站距离的关系的有力工具，很容易应用于过去和将来的地面和火星测量。