摘要
Abstract
To adapt to the spatial field analysis of geographical information science(GIS)and the near-earth scale application of geodesy,based on the review of applicable boundaries of classical gravitational theory,we proposed three fundamental axioms using a rigid spatial reference,and constructed the gravitational field ontology model and field coupling mechanism.Firstly,based on GIS spatial cognition and field distribution rules,we derived the intrinsic distribution formula of gravitational field.Then,by introducing the multiplicative mechanism of field coupling,we derived the macroscopic gravitational expression F=K2×M×m/R2,indicating that the coupling constant K satisfying K=√G with the gravitational constant G,and completed the dimensional and numerical derivation.Finally,the differences from classical theories were compared in terms of causal logic,field concept definition and coupling mechanism,and the self-consistency of model was verified with measured data such as gravitational constant dispersion and gravity anomaly distribution.The results show that the model is logically self-consistent and compatible with classical formulas,which can support GIS gravitational field grid modeling,gravity anomaly mechanism interpretation and geodesy precise correction,providing a supplementary theoretical framework for geospatial field analysis.关键词
GIS/引力场本体模型/场耦合/先场后力/GIS空间场/大地测量Key words
GIS/gravitational field ontology model/field coupling/field before force/GIS spatial field/geodesy分类
天文与地球科学
