Effects level modeling in radar simulation has been the traditional approach for satisfying Electronic Countermeasure (ECM) training requirements. A new Radar Environment Simulator (RES), developed for a U. S. Navy F-14A Weapon Systems Trainer, utilizes design principles which go beyond the traditional. The jammer models in the RES are based on detailed modeling of real-world transmitted and received energy levels ("energy level modeling"). This design approach is used instead of simply attempting to duplicate visual effects ("effects level modeling"). While either of these methods can provide an accurate simulation under normal operating conditions, the energy level model has significant advantages when ECM is introduced into the scenario. The result is a trainer that is more realistic in its response to a large set of radar operator actions and threat variables.

Energy level modeling can be applied to the simulation of systems designed for the detection, acquisition, and tracking of various targets. This design principle enables the software to emulate all radar system behavior without anticipating each unique scenario. In addition, non-standard radar operator inputs to an actual radar system interface are processed real-time using a detailed radar model allowing realism never before possible. Consequently, the goal of preparing a trainee for a wide variety of ECM threats and threat signatures is achieved to an extent not feasible through traditional effects level simulation.