The rapid development and extensive application of mobile mapping technologies have necessitated the increased accuracy of mobile mapping systems (MMSs) for application in various fields. In particular, the need for quick and convenient accuracy assessment of MMSs has attracted increasing research attention. Based on the positioning equation of MMSs and an analysis of the factors affecting their positioning accuracy, we propose an accuracy assessment model for MMSs in this study. With reference to the derivation process of the classical Ferreros formula and with the application of the law of covariance propagation, we propose a new method based on the reference plane for the accuracy assessment of laser point clouds of the MMSs. To verify the feasibility of the method, we used the VSurs-Q MMS as the experimental platform and conducted an accuracy assessment experiment. The experimental results were compared with those results obtained calculation of theoretical accuracy method and calculation of traditional measurement method based on feature points. Our experimental results show that the proposed method is reliable and effective and offers the advantages of wide applicability and convenient implementation. Furthermore, it can provide a useful reference for the accuracy assessment of MMSs in general.

移动制图技术的快速发展和广泛应用已要求提高移动制图系统（MMS）在各个领域中的应用的准确性。特别是，对于MMS的快速便捷的准确性评估的需求吸引了越来越多的研究关注。基于彩信的定位方程，并分析影响彩信定位精度的因素，提出了彩信准确性评估模型。参考经典费列罗斯公式的推导过程，并应用协方差传播定律，我们提出了一种基于参考平面的新方法，用于MMS激光点云的准确性评估。为了验证该方法的可行性，我们使用VSurs-Q MMS作为实验平台，并进行了准确性评估实验。将实验结果与理论精度方法的计算结果和基于特征点的传统测量方法的计算结果进行比较。实验结果表明，该方法可靠有效，具有适用性广，实施方便的优点。此外，它可以为一般MMS的准确性评估提供有用的参考。实验结果表明，该方法可靠有效，具有适用性广，实施方便的优点。此外，它可以为一般MMS的准确性评估提供有用的参考。实验结果表明，该方法可靠有效，具有适用性广，实施方便的优点。此外，它可以为一般MMS的准确性评估提供有用的参考。