Scientific Computation Software for Geophysical Geodesy

Geodetic Computation for Earth Tide, Load Effects and Deformation Monitoring (ETideLoad4.0) is a large Windows package for scientific computing of geophysical geodetic monitoring. Which adopts the scientific uniform numerical standards and analytic compatible geophysical algorithms accurately to compute various tidal and non-tidal effects on various geodetic quantities outside the solid Earth, approach global-reginal load deformation field and temporal Earth’s gravity field, and then quantitatively monitor surface hydrology environment, ground stability variations and geological disasters, in order to promote the collaborative monitoring of multi-geodetic technologies and deep fusion of multi-source heterogeneous geodetic data.

Precise Approach for Local Gravity field and Geoid (PALGrav4.0) is a set of computation programs for stationary geophysical geodesy in near-Earth space outside the geoid. Which includes the physical geodetic data processing set for terrestrial, airborne, shipborne, altimetric gravity field data, precise computation set of various topographic masses effects for the anomalous gravity field, various numerical integrals and inverse operations for the anomalous gravity field, and some ingenious algorithms for height datum improving and geodetic application expanding by gravity field data or method.

Applicable Fields and Usage Instruction

The two software packages were developed by QT C++ (Visual C++) for the user interface, Intel Fortran (Fortran90, 132 Columns fixed format) for the core function modules, and mathGL C++ for the geodetic data file visualization in the Visual Studio 2017 x64 integrated environment. ETideLoad4.0 is composed of more than 50 win64 executable programs with nearly 600 function modules, and PALGrav4.0 is composed of more than 40 win64 executable programs with nearly 500 function modules.

These are suitable for senior undergraduates, graduate students, scientific researchers, and engineering technicians in geodesy, geophysical, surveying and geomatics,   geological disasters, hydrodynamics, satellite dynamics, seismic, and geodynamics. Which considers various potential needs such as classroom teaching, independent self-study, applied computing and scientific research. You can design your own schemes and processes, then organize flexibly the related programs and functions, perform some scientific computations for geophycical geodesy.

Deep fusion principles of multi-geodetic data

(1) Using scientific consistent geophysical models, rigorous uniform numerical standards, and analytic compatible geodetic and geodynamic algorithms, construct the theoretical basis and necessary conditions for geodetic collaborative monitoring by unifying the spatiotemporal monitoring frames and reference epoch.

(2) For the same type of multi-source heterogeneous geodetic monitoring quantities, the basic geodetic constraints or joint adjustment methods with additional monitoring datum parameters as needed are used to deep fusion.

(3) For different types of monitoring quantities, physical geodetic, solid geophysical, or environmental geodynamic constraints with additional dynamic parameters as needed are used to deep fusion.

(4) The purpose of reconstructing the geodetic or geodynamic relationship between various monitoring data is not only to improve the spatiotemporal monitoring capability, but also to further reveal the geodynamic structure and characteristics of the monitored objects.