SimTech provides radar scene generation and infrared modeling, analysis and engineering support for real-time, hardware-in-the-loop (HWIL) and digital simulations. SimTech engineers and analysts are expert in the use of Xpatch for radar signature modeling and PRISM, OSC, SPIRITS, and IRMA for various aspects of infrared signature modeling.The ability to develop geometry models with texture mapping for visualization and IR scene generation has been proven successful. Their design of the DigitalQuadrature Modulator (DQM) for use in radar signal generation is now incorporated into four of the AMCOM HWIL simulation facilities.They develop PC-based tools in Visual C++ for data analysis packages, real-time fly-outs, geometry visualizations, and validation tools. SimTech has developed hundreds of polarization- and aspect-dependent radar multiscatterer models for simulation of aircraft, missile and ground vehicle targets. SimTech is providing radar scene models for the following programs (Joint Common Missile, Longbow, THAAD, PAC-3, Eagle Eyes, GMD and MRM.)At the AMCOM Radio Frequency Simulation System facility, also known as RFSS, our target, blade modulation, clutter, chaff, and multipath models have been used in developing ECM techniques for many RF surface-to-air and air-to-air missiles.