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# Component Overview Diagram
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```mermaid
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flowchart LR
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camera[01 Camera Ingest And Calibration]
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vio[02 VIO Adapter]
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wrapper[03 Safety And Anchor Wrapper]
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retrieval[04 Satellite Service]
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verify[05 Anchor Verification]
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cache[06 Tile Manager]
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mav[07 MAVLink And GCS Integration]
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fdr[08 FDR And Observability]
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tests[[Separate E2E Test Suite]]
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navCam[[Nav Camera]] --> camera
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fc[[ArduPilot Plane FC]] --> mav
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satSvc[[Azaion Suite Satellite Service]] --> retrieval
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datasets[[Replay/Public Datasets]] --> tests
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camera --> vio
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mav --> vio
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vio --> wrapper
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wrapper --> retrieval
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retrieval --> verify
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cache --> retrieval
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cache --> verify
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verify --> wrapper
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wrapper --> mav
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wrapper --> cache
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camera --> cache
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camera --> fdr
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vio --> fdr
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wrapper --> fdr
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retrieval --> fdr
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verify --> fdr
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cache --> fdr
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mav --> fdr
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tests --> camera
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tests --> mav
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tests --> cache
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mav --> qgc[[QGroundControl]]
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mav --> fc
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retrieval --> satSvc
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```
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# Flow: Tile Manager And Generated Tile Lifecycle
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```mermaid
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flowchart TD
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preflight([Pre-flight Satellite Service sync]) --> validate[06 Tile Manager validates manifest signatures hashes freshness]
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validate --> cacheOk{Cache valid?}
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cacheOk -->|No| block[Block cache usage and report]
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cacheOk -->|Yes| load[04 Satellite Service loads local descriptor metadata and FAISS index]
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load --> flight([Flight runtime])
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flight --> eligibility[03 Tile write eligibility check]
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eligibility --> eligible{Covariance and quality pass?}
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eligible -->|No| noWrite[Do not write generated tile]
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eligible -->|Yes| write[06 Orthorectify frame and write COG + signed JSON sidecar]
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write --> fdr[08 Record tile-write audit]
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fdr --> postflight([Post-flight])
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postflight --> package[06 Package generated tiles + manifest delta]
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package --> sync[[Post-flight Satellite Service upload]]
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```
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# Flow: Normal Localization
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```mermaid
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flowchart TD
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start([Frame + FC telemetry]) --> ingest[01 Camera ingest and quality]
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ingest --> occlusion{Total occlusion or blackout?}
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occlusion -->|Yes| imuOnly[03 IMU-only dead_reckoned propagation]
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occlusion -->|No| frameOk{Frame usable for VIO?}
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frameOk -->|No| degrade[03 Safety wrapper degraded mode]
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frameOk -->|Yes| vio[02 VIO adapter]
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telemetry[07 MAVLink telemetry] --> vio
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vio --> healthy{VIO healthy?}
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healthy -->|Yes| wrap[03 Covariance calibration + source label]
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healthy -->|No| trigger[Trigger relocalization]
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wrap --> emit[07 Emit GPS_INPUT and QGC status]
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wrap --> record[08 Record FDR event]
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emit --> endNode([Position output])
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trigger --> satFlow[[Satellite relocalization flow]]
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imuOnly --> emit
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degrade --> emit
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```
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# Flow: Satellite Relocalization
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```mermaid
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flowchart TD
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start([Relocalization trigger]) --> request[03 Build retrieval request]
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request --> retrieve[04 DINOv2-VLAD + FAISS top-K]
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retrieve --> candidates{Candidates found?}
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candidates -->|No| degraded[03 Continue degraded/dead reckoned]
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candidates -->|Yes| verify[05 ALIKED/DISK + LightGlue + RANSAC]
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verify --> geometry{Geometry passes?}
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geometry -->|No| degraded
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geometry -->|Yes| gates[03 Freshness/provenance/Mahalanobis gates]
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gates --> accepted{Anchor accepted?}
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accepted -->|No| degraded
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accepted -->|Yes| update[03 Apply absolute correction]
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update --> emit[07 Emit anchored GPS_INPUT]
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degraded --> emitDegraded[07 Emit degraded GPS_INPUT/status]
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emit --> record[08 Record anchor decision]
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emitDegraded --> record
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record --> endNode([Relocalization result])
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```
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