GEOCOL2004

GEOCOL2004 is a research-oriented geodetic processing package focused on least-squares collocation and gravity-field modeling. It is typically used to combine heterogeneous geodetic measurements—such as surface gravity data, satellite altimetry-derived gravity anomalies, GPS/leveling observations, and deflections of the vertical—into consistent predictions and grids, including geoid heights, gravity anomalies, and associated uncertainty estimates.

Key capabilities:

• Least-squares collocation with configurable covariance modeling
• Gridding and point prediction of geoid undulations, gravity anomalies, deflections of the vertical, and related quantities
• Support for remove–restore workflows using external reference fields and terrain information
• Quality control features suited to multi-source datasets and large-scale batch processing
• Output of predictions alongside formal error estimates for reliability assessment

Practical notes:

• As a 2004-era release, it is typically command-line driven and may require a Fortran toolchain or other legacy build environment
• Module availability and documentation can vary by distribution; consult the accompanying materials for exact capabilities and formats

GEOCOL2004 is best suited for geodesists, Earth scientists, and engineers needing robust collocation-based modeling of the gravity field and geoid from mixed data sources.

GEOCOL2004 is developed by SIGCOL. The most popular version of this product among our users is 1.0. The name of the program executable file is Geocol.exe.

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