sjg
8aa1884d2d
[fix](trx-ft8): align FT2 decoder thresholds and LLR scaling with reference
The FT2 decoder was failing to decode valid signals due to thresholds
and LLR parameters that were significantly stricter than the reference
implementation (Decodium/raptor ft2_triggered_decode).
Thresholds aligned with reference at depth>=3:
- Peak detection: 1.08 -> 1.03 (reference uses 0.50 on normalized spectrum)
- Scan sync: 0.60 -> 0.50 (reference at depth>=3)
- Decode sync: 0.80 -> 0.65 (reference at depth>=3)
- Sync quality min: 13 -> 10 (reference at depth>=3)
LLR parameters aligned:
- Scale factor: 2.83 -> 3.2 (matches reference scalefac)
- Normalization: sqrt(24/var) -> 1/sigma (matches reference normalizebmet)
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
Signed-off-by: Stanislaw Grams <stanislawgrams@gmail.com>
2026-03-17 21:38:48 +01:00
..
2026-03-17 21:38:48 +01:00
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