JSB “Fidelity”
To Analysts, “Low and High Fidelity” Often a Relative Comparison to Requirements
- Low Fidelity Insufficient; High Fidelity Satisfactory / Excessive
To Systems Engineers, Fidelity Less Abstract
- Low-fidelity -- Physics-based Cookie Cutter Sensor Model
- Medium-fidelity -- Functional Model (Composed of Simulated Components Representing Real Sensor, with Systemic Errors Applied at their Sources, Latencies)
- High-fidelity -- Emulation or Real Hardware-in-the-loop
Replace Fidelity With Carefully Caveated or Explicit Requirements to Avoid Ambiguity
Test Goals Determine Required Fidelity (e.g., VV&A)
- Accuracy, as Compared to Real System Performance
- Timeline, System Idiosyncrasies
- Tactical Interfaces
- Emulation and Real Hardware