Realistic Ballistic Missile Defence Simulation with EWAWS#
Ballistic missile defence is one of the most demanding scenarios in modern defence simulation. Engagement timelines are short, target speeds are extremely high, and small differences in detection time, trajectory prediction, interceptor performance, or radar modelling can significantly change the outcome of an engagement.
With EWAWS, RTDynamics provides a physics-based simulation environment that can be used to model ballistic missile fly-out, radar detection, tracking, and interception with a high degree of realism.
Physics-based ballistic missile fly-out#
EWAWS includes a high-fidelity physics model that allows realistic simulation of ballistic missile flight from launch through the different phases of the trajectory.
The missile trajectory is not represented as a simple scripted path. Instead, the missile motion is computed using a physics-based flight model. This allows the simulation to represent realistic acceleration, velocity development, climb profile, midcourse flight, and terminal behaviour.
As a result, ballistic missile scenarios can be evaluated using realistic fly-out behaviour, including:
- Missile launch and boost phase acceleration
- Vertical boost followed by a push-down manoeuvre onto a depressed trajectory
- Realistic speed development over time
- Ballistic trajectory shaping
- Altitude and range-dependent motion
- Guided terminal phase, including the terminal dive onto the target
- Impact of missile performance parameters on engagement geometry
This provides a more meaningful basis for training, analysis, and system evaluation than simplified kinematic representations.
Realistic radar detection timing#
In ballistic missile defence, the time at which a missile is detected is critical. A few seconds can affect whether the defending system has enough time to classify the threat, generate a track, calculate an intercept solution, and launch an interceptor.
EWAWS supports realistic radar and radar cross-section models, this enables realistic simulation of when and how a ballistic missile becomes detectable.
The detection timeline can depend on factors such as:
- Missile position and altitude
- Aspect angle
- Radar cross-section
- Radar location and performance
- Line-of-sight conditions
- Atmospheric conditions
- Radar scan volume
This allows users to evaluate whether a ballistic missile can be detected and tracked early enough to support a successful engagement.
Realistic interceptor modelling#
Ballistic missile defence simulation also requires realistic modelling of the interceptor itself. An interceptor is not simply a point object moving toward a target. Its acceleration, maneuverability, seeker performance, guidance behaviour, and sensor limitations all affect the final engagement result.
EWAWS allows interceptors to be represented using realistic flight dynamics and sensor models. This makes it possible to simulate the complete engagement chain from threat detection to interceptor launch, fly-out, target acquisition, and terminal intercept.
Interceptor modelling includes:
- Target detection and tracking by the air defence radar
- Flight dynamics and maneuver limitations
- Realistic seeker performance
- Endgame behaviour
By modelling both the ballistic missile and the interceptor with physics-based behaviour, EWAWS enables more credible analysis of missile defence scenarios.
Layered air defence scenario#
The accompanying video demonstration shows a layered defence against multiple incoming Iskander missiles. Different strategic targets are attacked, requiring the defending force to detect, track, prioritize, and engage several high-speed threats within a limited time window.
The layered air defence consists of Patriot and IRIS-T SLM batteries. This allows the scenario to demonstrate how different defensive systems can contribute to the engagement, depending on their location, radar coverage, interceptor performance, and engagement geometry.
The outcome is not scripted. In the run shown, six of the seven missiles are destroyed by PAC-3 MSE interceptors, while one evades them and is handed over to the IRIS-T SLM launchers as it descends. Those interceptors also miss, and the missile completes its guided terminal phase and dives onto its target - a reminder that a layered defence is evaluated by what leaks through it, not only by what it stops.