docs: Comprehensive RF signal analysis and SOTA research
Complete analysis of: - What RF signals record (.sub file structure, modulation types) - Current state-of-the-art (RTL_433, Flipper Zero, URH, ML research) - GigLez implementation analysis (60-70% accuracy baseline) - Known signal databases (RTL_433 260+ protocols, Flipper 13k sigs) - 7 device identification strategies (protocol, frequency, timing, ML, etc.) - Gap analysis: current vs SOTA (20-30% accuracy gap) - Implementation roadmap: 60% → 95% accuracy in 6 phases Key findings: - RTL_433 integration: +15% accuracy (Phase 1) - Timing analysis: +5% accuracy (Phase 2) - ML classification: +10% accuracy (Phase 5) - Total potential: 90-95% accuracy (state-of-the-art) Research sources: RTL_433, Flipper Zero docs, URH, 2024-2025 ML papers Planning document - no code changes made per user request
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