Interference Simulation

Programmable Interference: Simulating Signal Disruption

Testing the resilience of a wireless system requires more than just clean-room signals; it requires a realistic electromagnetic environment. Whether you are validating the anti-interference capabilities of a new drone link or auditing industrial sensor reliability, Mycelium provides a powerful suite of noise generation tools to simulate complex interference patterns.

Noise Types in Mycelium

The Transmit_Noise action supports four distinct modes, allowing you to tailor the interference to your specific threat model:

  • AWGN: Additive White Gaussian Noise for broadband floor elevation.
  • Tone: A high-power single-frequency spike for narrowband denial.
  • Sweep: A linear FM sweep (chirp) that cycles through a frequency range.
  • Pulse: Rectangular time-domain pulsing for intermittent interference.

Building a Frequency-Hopping Disruptor

By combining noise generation with frequency manipulation directives, we can create a sophisticated hopping disruptor that disrupts a wide band without transmitting continuously on every frequency.

Testing Duty Cycles

Realistic interference often isn't constant. We can use the Delay action to simulate duty cycles or specific pulse intervals required by EW testing standards.

Execution Flow

digraph { graph [bgcolor="transparent" fontname="Inter" rankdir=TB pad=0.4] node [fontname="Inter" fontsize=12 fontcolor="#e2e8f0" style=filled fillcolor="#1a1033" color="#8b5cf6" penwidth=1.5 margin="0.2,0.15" shape=box] edge [color="#8b5cf6" fontcolor="#a78bfa" fontname="Inter" fontsize=10 arrowsize=0.8] start [label="Start: 433 MHz" shape=ellipse] jam [label="Transmit_Noise\n(Sweep \u00b1500 kHz)"] hop [label="Increment_Frequency\n+1 MHz"] check [label="Frequency > 440 MHz?" shape=diamond fillcolor="#2d1b69"] reset [label="Reset to 433 MHz"] burst [label="Transmit_Noise\n(AWGN Burst)"] delay [label="Delay 100ms"] start -> jam -> hop -> check check -> reset [label="Yes"] check -> burst [label="No"] reset -> burst burst -> delay -> jam [label="Loop" style=dashed] }

Conclusion

Mycelium transforms a standard SDR into a precision instrument for Electronic Support (ES) and Disruption simulations. By automating the timing and frequency of interference, teams can perform repeatable, scientific audits of their wireless infrastructure's robustness.



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