Mathematical Gravity Modeling Advancement (MaGMA)

Closed Pre-Solicitation Posted

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Solicitation number
HM0476_MaGMA
Agency
Responses due
Set-aside
No set-aside

Opportunity facts

Place of performance
Saint Louis, Missouri, United States

Notice details come from SAM.gov. Updated .

About this opportunity

The National Geospatial Intelligence Agency (NGA), a component of the Department of Defense, is seeking a vendor to develop advanced mathematical gravity modeling capabilities through the Mathematical Gravity Modeling Advancement (MaGMA) program. The primary deliverables include realistic planetary models incorporating layered structures, mass elements, and triangulations that support spatial and radial density variations, with particular emphasis on irregular triangulations and inhomogeneous mass element distributions for regions of interest. The vendor must also implement and improve analytic continuation code provided by NGA, integrate it into the main NGSC system, and develop new computational methods for this application while evaluating parallel computation techniques for operational deployment. Additionally, the vendor shall develop theoretical frameworks for new computational approaches to estimating spherical harmonic expansion model coefficients, including out-of-core inverse techniques such as stochastic gradient descent to reduce memory requirements for large-scale matrix inversion. Validation of the developed models and gravimetric quantities will be conducted through comparison with established methodologies such as Residual Terrain Modeling (RTM) and the EGM08 model. The pre-solicitation notice was posted on April 15, 2026, with a due date of April 30, 2026, providing potential bidders with a 15-day window to review the opportunity details and prepare their responses.

This opportunity carries no set-aside designation, indicating it is open to all eligible vendors meeting the technical and capability requirements. The contract falls under NAICS code 541715 (Research and Development in the Physical, Engineering, and Life Sciences) and PSC category AJ12 (General Science and Technology R&D Services), positioning it as a research and development effort rather than a procurement of finished goods. The pre-solicitation notice does not specify an award value or budget range, nor does it provide information regarding potential incumbent contractors or the expected contract duration and timeline for service delivery. Interested vendors should note that the work will involve collaboration with NGA Subject Matter Experts and a designated Principal Investigator, suggesting a partnership-oriented approach to project execution. The detailed statement of work and evaluation criteria will likely be provided in the formal solicitation document following this pre-solicitation phase.

Notice text

The vendor shall develop more realistic planetary models based on previous work provided by NGA. These models will be composed of layers, mass elements, and triangulations that allow for spatial and radial density variations. Furthermore, the planetary models will incorporate these components in such a way that they allow for finer resolution in regions of interest (i.e. irregular triangulations and inhomogeneous mass element distributions). While at least one of these models will be a model of the Earth the others may be fictitious planets for testing/research purposes and/or other planetary bodies of interest (e.g. the Moon and Bennu). Derived gravimetric quantities from the application of the NGSC to these models will be compared to other suitable modelling techniques (e.g. RTM, EGM08, etc.) or other data as available as a validation method for both the NGSC and models.

The vendor shall implement and improve analytic continuation code; NGA will provide the code this is to be based off. This will be done by integrating the provided code into the main NGSC and developing and testing new methods for analytic continuation. All analytic continuation code will be evaluated to determine the applicability of parallel computation techniques in preparation for operational use.

The vendor shall develop and explore the theoretical basis for new computational approaches to estimating the spherical harmonic expansion (SHE) model coefficients. This will involve “out-of-core” inverse techniques, such as stochastic gradient descent (SGD) based on mini-batches, which will lower the memory use associated with typical large scale matrix inversion. Furthermore, the vendor will also explore other methods to obtain the SHE model coefficients from forward modelling procedures.

The vendor may conduct reviews of potential new avenues of research or development aligned with the previous topics and shall work with NGA Subject Matter Experts (SMEs) and the Principal Investigator (PI) to evaluate whether new techniques, methods, or algorithms will provide benefit to NGA. Approval from the PI is required for significant changes in resources or time applied to the development of the overall deliverables.

Notice history

Notice Type Posted
Mathematical Gravity Modeling Advancement Latest solicitation Solicitation
This notice Original Pre-Solicitation

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