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Demod 2400x - #330

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CharlesBaud wants to merge 25 commits into

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CharlesBaud:demod-2400x

Closed

Demod 2400x#330
CharlesBaud wants to merge 25 commits into
flightaware:masterfrom
CharlesBaud:demod-2400x

Commits on Oct 17, 2026
- IQ FIFO and 12-bit IQ conversion kernels for DEMOD_2400X
  CharlesBaud
  committed
  7e02fe3
- added dsp part of demod
  CharlesBaud
  committed
  fc57da1
Commits on Oct 18, 2026
- Split demod DSP into starch kernels (generic/NEON/AVX2) with benchmark and wisdom
  CharlesBaud
  committed
  06b5839
- initial working version
  CharlesBaud
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  ae948e6
- added magnitude rather than power detection
  CharlesBaud
  committed
  307f2cd
- improved speed
  CharlesBaud
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  3a7afd3
Commits on Oct 19, 2026
- more speed improvements
  CharlesBaud
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  5a51c13
- merged DC removal and iq data into one stage
  CharlesBaud
  committed
  d70f5d4
- more speedups
  CharlesBaud
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  0f244bc
- locate_preamble: zero metrics below a threshold without dividing
  
  CharlesBaud
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  claude
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  dbd34b4
- AVX2: correct divide/sqrt in both directions
  
  CharlesBaud
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  claude
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  5b48533
- wisdom.x86: measured DEMOD_2400X kernel timings on Intel
  
  CharlesBaud
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  claude
  committed
  cce3ecd
- demod_2400x: fine arrival time for MLAT
  
  CharlesBaud
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  claude
  committed
  fbb2f7b
- DEMOD_2400X: least-squares upsampler coefficients, DATA_THRES 65
  
  CharlesBaud
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  claude
  committed
  1bc983a
- demod_2400x: feed adaptive gain, cap signal power at full scale
  
  CharlesBaud
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  claude
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  6abfb6d
- Makefile: default version 11.1x for the demod-2400x build
  
  CharlesBaud
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  claude
  committed
  34c8556
- upsample12: mirror-symmetric phases in NEON/AVX2, UPSAMPLE_SHIFT 4
  
  CharlesBaud
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  claude
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  36c6815
- decode_bits starch kernel: NEON and AVX2 bit decoding
  
  CharlesBaud
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  4159fdf
- README: DEMOD_2400X summary and results
  
  CharlesBaud
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  claude
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  5c0b3b4
- README: note Pi 4 timings were taken alongside the live receiver
  
  CharlesBaud
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  claude
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  5a58fa4
- upsample12 coefficients: every phase sums to 128
  
  CharlesBaud
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  claude
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  6ee303f
- Docs: DEMOD_2400X results, notes, AI disclosure; sim/ test tools
  
  CharlesBaud
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  claude
  committed
  aead77c
- README-demod2400x: compiler results (gcc 14, clang 19)
  
  CharlesBaud
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  claude
  committed
  f26af71
- Docs: describe the test data (SDRplay, RTL-SDR, synthetic, live)
  
  CharlesBaud
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  claude
  committed
  1298bf7
- NOTES-demod2400x: SDRplay model (RSP1B); note stock demod crash on its input
  
  CharlesBaud
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  claude
  committed
  b8bfca1

Commits

Commits on Oct 17, 2026

Commits on Oct 18, 2026

Commits on Oct 19, 2026