NASA SRTM Terrain Masking powers a new open-source ballistic simulator, offering unprecedented realism in warfare simulations. The tool uses 90-meter-resolution elevation data and a 72-ray horizon scan algorithm to model how mountains, valleys, and urban terrain affect blast zones. Developed as microservices in Python/Flask and C#/.

NET, it combines hybrid ballistic models—Euler/ISA physics for short-range systems and analytic formulas calibrated to SIPRI/CSIS data for ICBMs. Features include radioactive fallout simulation, Coriolis effect deflection, and nuclear blast zones using Glasstone & Dolan (1977) equations. The simulator’s global offline SRTM cache (5,700+ tiles) enables real-world terrain analysis without live internet access, while CesiumJS 3D globe integration visualizes missile trajectories like the DF-41 ICBM’s 9,174km range. Validation against real systems—from Sarmat’s 29.9-minute flight time to ATACMS’s 165km range—ensures accuracy.

Applications span military planning, disaster response, and defense R&D, with a 195-weapon database covering 30+ countries’ arsenals.