Development of Software to Procide Aerothermal and Pressure Loading BC's for Nonaxisymmetric, 3D, Supersonic and Hypervelocity Airframes

Not Available A high fidelity, wide area, multi-spectral scene generation capability incorporating the advanced VTRPE propagation code is proposed for radar and ESM system applications. The physics-based approach employs material and feature typing at the individual pixel level to produce high resolution RCS maps, which can be used in both monostatic and bistatic applications. The scenes are deterministic and geospecific, enabling true end-to-end sensor simulations in real-world conditions to be conducted. The major benefit of the underlying physics-based approach is that the common scene data bases support multiple sensors operating at different frequencies, and that reflectivity characteristics from the scene can be rapidly recomputed as each sensor platform moves relative to the scene. Sensor/ scene interfaces will produce inputs to sensor models in both the frequency domain (spectral representation) and in the time domain (coherent I,Q pulse generation). The scene generation software will be modular, using Object Oriented Programming techniques, to facilitate upgrades, integration with large scale simulations, and interoperability with various sensor models. During the Phase l activity, a sample scene will be developed using the new scene generation algorithms, and validated against measure data.