High-Precision Gravity Field Approximation and Full-Element Modeling on or outside the Geoid

PAGravf4.5 establishes a rigorous gravity field approximation framework. It integrates spatial-domain numerical integration algorithms, based on Boundary Value Theory, with spectral-domain Spherical Radial Basis Function (SRBF) approximation techniques.

Core Objective: To achieve analytical full-element modeling of the gravity field on or outside the geoid. This subsystem seamlessly processes multi-source, heterogeneous data of varying altitudes, cross-distributions, and multiple types, encompassing terrestrial, maritime, aerial, and space-based observations.

[Demonstration Area & Capabilities]

This software suite utilizes a representative region characterized by complex gravity field signatures, where the range of residual gravity disturbances exceeds 300 mGal after removing a 540-degree reference model. Users can verify and evaluate the performance of diverse gravity field approximation algorithms, facilitating a comprehensive understanding of their characteristics and optimal application strategies.