The Local Tangent Plane as the Primary Methodological Reference Frame: Evidence from Geodesy, Surveying, and Computational Modeling

Abstract

Technical practice in geodesy, surveying, remote sensing, and engineering simulation consistently employs the local tangent plane as the default computational and operational reference. This paper reviews documented workflows and algorithms across these domains and identifies a recurring pattern: local planar frames serve as the starting reference, while global ellipsoidal or geoidal models are applied secondarily for data transformation or localized correction. Evidence is drawn from GNSS-R geometry algorithms, professional site calibration standards, finite element analysis procedures, radio interferometric imaging, local geoid modeling studies, and inertial navigation systems. The accumulated record indicates that the methodological priority of the local tangent plane is embedded in operational practice, independent of broader claims regarding the Earth's global shape.