[docs](trx-rs): replace all ASCII diagrams with Mermaid
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>
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@@ -71,14 +71,14 @@ The project is split into a **server** (connects to the radio hardware) and a **
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### Data flow
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```
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Radio hardware
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↕ serial/TCP
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trx-server (rig_task.rs)
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↕ trx-protocol JSON-TCP (port 4530)
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trx-client (remote_client.rs)
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↕ internal channels
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Frontends: HTTP (8080), rigctl (4532), http-json (ephemeral)
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```mermaid
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graph TD
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Radio["Radio Hardware"] <-->|serial / TCP| Server["trx-server (rig_task.rs)"]
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Server <-->|"JSON-TCP :4530"| Client["trx-client (remote_client.rs)"]
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Server -->|"Opus-TCP :4531"| Client
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Client <-->|internal channels| F1["HTTP Frontend :8080"]
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Client <-->|internal channels| F2["rigctl Frontend :4532"]
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Client <-->|internal channels| F3["JSON-TCP Frontend"]
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```
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### trx-core controller
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@@ -94,6 +94,10 @@ The rig controller (`src/trx-core/src/rig/controller/`) is the central state man
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Signal decoders run as background tasks in `trx-server`, consuming decoded audio. `trx-ftx` provides the FT8/FT4/FT2 decoder in pure Rust. Decoded frames can be forwarded to PSKReporter and APRS-IS (IGate) uplinks, or logged via `trx-decode-log`.
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## Diagrams
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Always use [Mermaid](https://mermaid.js.org/) for diagrams in Markdown files. Never use ASCII art, box-drawing characters, or plain-text diagrams. GitHub renders Mermaid natively in ```mermaid fenced code blocks.
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## Commit Format
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```
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@@ -82,14 +82,14 @@ Build without SDR support: `cargo build --release --no-default-features`
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## How It Works
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```
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Radio / SDR hardware
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| serial or USB
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trx-server rig control, DSP, decoders, audio capture
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| JSON-TCP (4530) + Opus-TCP (4531)
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trx-client remote connection, audio relay
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Frontends Web UI (8080), rigctl (4532), JSON-TCP
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```mermaid
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graph TD
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Radio["Radio / SDR Hardware"] <-->|"serial or USB"| Server["trx-server<br/>rig control, DSP, decoders, audio capture"]
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Server <-->|"JSON-TCP :4530"| Client["trx-client<br/>remote connection, audio relay"]
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Server -->|"Opus-TCP :4531"| Client
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Client <-->|internal channels| F1["Web UI :8080"]
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Client <-->|internal channels| F2["rigctl :4532"]
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Client <-->|internal channels| F3["JSON-TCP"]
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```
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`trx-server` owns hardware access and runs the DSP pipeline.
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+22
-30
@@ -58,36 +58,28 @@ Target users are amateur radio operators who want networked, automated, or multi
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## High-Level Architecture
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```
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┌──────────────────────────────────────────────────────────┐
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│ trx-server │
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│ │
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│ Radio Hardware (serial/TCP) │
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│ ↕ CAT protocol │
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│ Rig Backend ──────── rig_task.rs ─── listener.rs │
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│ (ft817/ft450d/sdr) (state machine) (JSON TCP :4530) │
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│ │ │
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│ audio.rs │
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│ (Opus :4531) │
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│ │ │
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│ Decoders │
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│ (APRS, CW, FT8, WSPR, RDS) │
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│ PSKReporter / APRS-IS │
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└──────────────────────────────────────────────────────────┘
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↕ JSON TCP (port 4530)
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↕ Opus audio TCP (port 4531)
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┌──────────────────────────────────────────────────────────┐
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│ trx-client │
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│ │
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│ remote_client.rs (polls state, routes commands) │
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│ ↕ internal mpsc/watch channels │
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│ Frontends: │
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│ trx-frontend-http (Web UI :8080) │
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│ trx-frontend-rigctl (rigctl :4532) │
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│ trx-frontend-http-json (JSON/TCP ephemeral) │
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└──────────────────────────────────────────────────────────┘
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↕ Browser / Hamlib / Custom tools
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End Users
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```mermaid
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graph TD
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subgraph server["trx-server"]
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HW["Radio Hardware"] <-->|"CAT protocol<br/>serial / TCP"| Backend["Rig Backend<br/>(ft817 / ft450d / sdr)"]
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Backend --> RigTask["rig_task.rs<br/>(state machine)"]
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RigTask --> Listener["listener.rs<br/>(JSON TCP :4530)"]
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RigTask --> Audio["audio.rs<br/>(Opus :4531)"]
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Audio --> Decoders["Decoders<br/>(APRS, CW, FT8, WSPR, RDS)"]
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Decoders --> Uplinks["PSKReporter / APRS-IS"]
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end
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subgraph client["trx-client"]
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Remote["remote_client.rs<br/>(polls state, routes commands)"]
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Remote <-->|"mpsc / watch channels"| HTTP["trx-frontend-http<br/>(Web UI :8080)"]
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Remote <-->|"mpsc / watch channels"| Rigctl["trx-frontend-rigctl<br/>(rigctl :4532)"]
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Remote <-->|"mpsc / watch channels"| JSON["trx-frontend-http-json<br/>(JSON/TCP)"]
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end
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Listener <-->|"JSON TCP :4530"| Remote
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Audio -->|"Opus TCP :4531"| Remote
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HTTP & Rigctl & JSON <--> Users["End Users<br/>(Browser / Hamlib / Custom tools)"]
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```
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The server and client are separate binaries. They communicate over **JSON-over-TCP** (control) and **Opus-encoded TCP** (audio). Both binaries can load shared-library plugins at startup.
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+10
-10
@@ -27,16 +27,16 @@ can be projected as semi-transparent overlays on the same Leaflet map.
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### Data flow
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```
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Pass decoded (APT / LRPT)
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↓ finalize_wxsat_pass / finalize_lrpt_pass (trx-server/audio.rs)
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↓ SGP4 propagation using satellite TLE + pass timestamps
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↓ Compute geo_bounds [[south, west], [north, east]]
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↓ Compute ground_track [[lat, lon], ...]
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↓ Attach to WxsatImage / LrptImage
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↓ Broadcast via DecodedMessage
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↓ SSE → browser
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↓ wxsat.js: L.imageOverlay() + L.polyline() on aprsMap
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```mermaid
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graph TD
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A["Pass decoded (APT / LRPT)"] --> B["finalize_wxsat_pass / finalize_lrpt_pass<br/>(trx-server/audio.rs)"]
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B --> C["SGP4 propagation using satellite TLE + pass timestamps"]
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C --> D["Compute geo_bounds<br/>[[south, west], [north, east]]"]
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D --> E["Compute ground_track<br/>[[lat, lon], ...]"]
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E --> F["Attach to WxsatImage / LrptImage"]
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F --> G["Broadcast via DecodedMessage"]
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G --> H["SSE → browser"]
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H --> I["wxsat.js: L.imageOverlay() + L.polyline() on aprsMap"]
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```
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### Geo-referencing strategy
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@@ -34,17 +34,11 @@ trx-wxsat/src/
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### NOAA APT
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```
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FM-demodulated audio (any sample rate)
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│ AptDemod: FFT Hilbert transform, bandpass @ 2400 Hz ±1040 Hz
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▼
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AM envelope resampled to 4160 Hz
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│ SyncTracker: 1040 Hz sync-A marker correlation
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▼
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Aligned 2080-sample lines → [SyncA 39][SpaceA 47][ImageA 909][TelA 45][SyncB 39][SpaceB 47][ImageB 909][TelB 45]
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│ Telemetry extraction, wedge-based radiometric calibration, histogram EQ
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▼
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PNG image (1818 × N pixels, dual-channel side-by-side)
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```mermaid
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graph TD
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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"]
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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]"]
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C -->|"Telemetry extraction,<br/>wedge-based radiometric calibration,<br/>histogram EQ"| D["PNG image<br/>(1818 x N pixels, dual-channel side-by-side)"]
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```
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**Key DSP details:**
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@@ -62,20 +56,12 @@ PNG image (1818 × N pixels, dual-channel side-by-side)
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### Meteor-M LRPT
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```
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Baseband samples (any sample rate)
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│ QpskDemod: Costas loop carrier recovery + Gardner TED symbol timing
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▼
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Soft symbols (±1.0, I/Q interleaved) @ 72 ksym/s
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│ CaduFramer: hard-decision, ASM (0x1ACFFC1D) search, frame lock
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▼
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1024-byte CADUs (CCSDS transfer frames)
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│ ChannelAssembler: VCID → APID routing, MCU extraction
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▼
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Per-APID pixel rows (1568 px wide)
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│ RGB composite (APIDs 64/65/66) or grayscale fallback
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▼
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PNG image (1568 × N pixels)
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```mermaid
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graph TD
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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"]
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B -->|"CaduFramer: hard-decision,<br/>ASM (0x1ACFFC1D) search, frame lock"| C["1024-byte CADUs<br/>(CCSDS transfer frames)"]
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C -->|"ChannelAssembler:<br/>VCID → APID routing, MCU extraction"| D["Per-APID pixel rows<br/>(1568 px wide)"]
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D -->|"RGB composite (APIDs 64/65/66)<br/>or grayscale fallback"| E["PNG image<br/>(1568 x N pixels)"]
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```
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**LRPT channel mapping:**
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