[fix](trx-rds): replace ring-buffer FIR with FFT overlap-save, tune constants

sjg/trx-rs

- Replace FirFilter (ring-buffer FIR) with FftRrcFilter using overlap-save
  FFT convolution; I and Q are processed together as a single complex FFT,
  halving filter cost (~10x fewer operations than direct convolution)
- Reduce PHASE_CANDIDATES 16 -> 8 (reasonable, double the original)
- Lower MIN_PUBLISH_QUALITY 0.55 -> 0.38 (more permissive acquisition)

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
Signed-off-by: Stan Grams <sjg@haxx.space>

This commit is contained in:

Stan Grams

2026-03-26 23:53:53 +01:00

parent 032ff2a735

commit d1703f6b0a

2 changed files with 150 additions and 58 deletions

									
										src/decoders/trx-rds/Cargo.toml
									
		+1
		
												View File
												
				@@ -9,3 +9,4 @@ edition = "2021"

				[dependencies]

				trx-core = { path = "../../trx-core" }

				rustfft = "6"