TESS models, algorithms and equations are based on scientifically established and accepted physics and engineering as published in technical papers, texts and journals. TESS uses physics-based subsystem models (as opposed to effects-based or emulative component models) to attain validatable realism with execution speeds that support a broad range of requirements.

To achieve realistic system interaction results, TESS simulation models focus on the incorporation of critical sub-system non-linearities as possessed by tracking discriminators, saturating amplifiers and mode switching logic. Countermeasures typically attempt to exploit these non-linear characteristics and to drive weapon system tracking and guidance systems into regions of non-linear performance. Hence, the modeling of such non-linearities are essential to conducting realistic parameter sensitivity analysis and distinguishes TESS from lower-fidelity linearized simulations.

Where specific classified threat subsystem processes differ from those incorporated into TESS’s subsystems (i.e. specific electronic protection circuits) the user can easily modify the model to include such specific processes.

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