GB/T 26958.61-2023

This standard specifies the Gaussian filter for linear areal surface texture analysis, defining the mathematical implementation and metrological characteristics for separating roughness, waviness, and form components from 3D surface topography data. It is applied in precision manufacturing and quality control contexts, such as automotive, aerospace, and optical component production, where engineers use it to ensure consistent surface filtering for functional performance evaluation and compliance with geometrical product specifications.