SBIR Phase I: Accelerated Propagation Modeling of Near Ground Radio Signals

这项小型企业创新研究（SBIR）第一阶段研究项目致力于开发10 MHz至3 GHz频率范围内近地电磁传播的精确模型。所提出的模型将是对现有模型的改进，因为它将1)在较宽的频带上提供结果；2)为近地传播提供更精确的结果；3)适用于多辐射源和多目的地的场景。它模拟的主要现象是反射、衍射和散射。该模型基于几种知名的室外和室内传播模型和技术的结合，依赖于地形高程、地表覆盖和其他数据库中包含的信息。这项研究活动的广泛影响是，它将为大规模模拟的降阶建模提供新的见解。这些见解将导致减少仿真冗余，并适用于电磁学和许多其他领域。这项技术在SIGINT、COMINT和ELINT部门以及商业部门都有很大的市场。

This Small Business Innovation Research (SBIR) Phase I research project addresses the development of accurate models for near-ground electromagnetic propagation in the 10 MHz to 3 GHz frequency range. The model proposed will be an improvement over existing models because it will 1) provide the result over a wide frequency band; 2) provide a result that is more accurate for near-ground propagation; and 3) be applicable to scenarios with multiple radiation sources and destinations. The primary phenomena it simulates are reflection, diffraction and scattering. The model, based on a combination of several well-known outdoor and indoor propagation models and techniques, relies on information contained in terrain elevation, ground cover and other databases. The broad impact of this research activity is that it will provide new insights into reduced-order modeling for large scale simulation. These insights will lead to a reduction in simulation redundancy and be applicable to electromagnetics and many other fields. There is a significant market for this technology in the SIGINT, COMINT, and ELINT sectors as well as the commercial sector.