Accuracy check analysis of digital elevation model data results based on ICESat-2 ATL08 data

Abstract. Traditional methods for verifying the accuracy of digital elevation model (DEM) primarily rely on acquiring high-precision checkpoint elevations through field surveys. However, such approaches are often impractical in remote or inaccessible regions. To address the above issues, this paper proposes an accuracy verification method for DEM data products using ICESat-2 ATL08 data. Referencing current surveying and mapping quality control standards, the methodology includes data acquisition, preprocessing, and experimental validation in challenging terrains. Experimental results demonstrate the feasibility and effectiveness of using ICESat-2 ATL08 data for independent accuracy assessment of DEM products in areas where conventional ground truth data is unavailable. This study provides a practical reference for applications requiring DEM validation under limited field measurement conditions.