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[docs](trx-rs): replace all ASCII diagrams with Mermaid

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Convert ASCII art and box-drawing diagrams to Mermaid fenced code blocks
across README.md, CLAUDE.md, Architecture.md, Wxsat-Map-Overlay.md, and
trx-wxsat/README.md. Add Mermaid-only policy to CLAUDE.md.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
Signed-off-by: Stan Grams <sjg@haxx.space>
This commit is contained in:
Stan Grams
2026-03-29 12:29:12 +02:00
parent a0f7de6af3
commit 83c23401fc
5 changed files with 63 additions and 81 deletions
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src/decoders/trx-wxsat/README.md
+11 -25
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@@ -34,17 +34,11 @@ trx-wxsat/src/
### NOAA APT
```
FM-demodulated audio (any sample rate)
│ AptDemod: FFT Hilbert transform, bandpass @ 2400 Hz ±1040 Hz
▼
AM envelope resampled to 4160 Hz
│ SyncTracker: 1040 Hz sync-A marker correlation
▼
Aligned 2080-sample lines → [SyncA 39][SpaceA 47][ImageA 909][TelA 45][SyncB 39][SpaceB 47][ImageB 909][TelB 45]
│ Telemetry extraction, wedge-based radiometric calibration, histogram EQ
▼
PNG image (1818 × N pixels, dual-channel side-by-side)
```mermaid
graph TD
A["FM-demodulated audio<br/>(any sample rate)"] -->|"AptDemod: FFT Hilbert transform,<br/>bandpass @ 2400 Hz ±1040 Hz"| B["AM envelope<br/>resampled to 4160 Hz"]
B -->|"SyncTracker: 1040 Hz<br/>sync-A marker correlation"| C["Aligned 2080-sample lines<br/>[SyncA 39][SpaceA 47][ImageA 909][TelA 45]<br/>[SyncB 39][SpaceB 47][ImageB 909][TelB 45]"]
C -->|"Telemetry extraction,<br/>wedge-based radiometric calibration,<br/>histogram EQ"| D["PNG image<br/>(1818 x N pixels, dual-channel side-by-side)"]
```
**Key DSP details:**
@@ -62,20 +56,12 @@ PNG image (1818 × N pixels, dual-channel side-by-side)
### Meteor-M LRPT
```
Baseband samples (any sample rate)
│ QpskDemod: Costas loop carrier recovery + Gardner TED symbol timing
▼
Soft symbols (±1.0, I/Q interleaved) @ 72 ksym/s
│ CaduFramer: hard-decision, ASM (0x1ACFFC1D) search, frame lock
▼
1024-byte CADUs (CCSDS transfer frames)
│ ChannelAssembler: VCID → APID routing, MCU extraction
▼
Per-APID pixel rows (1568 px wide)
│ RGB composite (APIDs 64/65/66) or grayscale fallback
▼
PNG image (1568 × N pixels)
```mermaid
graph TD
A["Baseband samples<br/>(any sample rate)"] -->|"QpskDemod: Costas loop carrier recovery<br/>+ Gardner TED symbol timing"| B["Soft symbols (±1.0, I/Q interleaved)<br/>@ 72 ksym/s"]
B -->|"CaduFramer: hard-decision,<br/>ASM (0x1ACFFC1D) search, frame lock"| C["1024-byte CADUs<br/>(CCSDS transfer frames)"]
C -->|"ChannelAssembler:<br/>VCID → APID routing, MCU extraction"| D["Per-APID pixel rows<br/>(1568 px wide)"]
D -->|"RGB composite (APIDs 64/65/66)<br/>or grayscale fallback"| E["PNG image<br/>(1568 x N pixels)"]
```
**LRPT channel mapping:**