207 lines
10 KiB
Markdown
207 lines
10 KiB
Markdown
# Phase 10: Real-World Field Validation & Forensic Ride Logging Final Report
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## Executive Summary
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| Attribute | Status / Value |
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|---|---|
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| **Executive Verdict** | **READY FOR REAL-WORLD FIELD TEST** |
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| **Validation Classification** | **Comprehensive Software & Synthetic Validation Passed** (Physical Real-World On-Motorcycle Validation is Pending Rider Execution) |
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| **Telemetry Pipeline Architecture** | 20Hz Heartbeat, Sensor Fusion EKF, GPS Multi-Path Filter, Lean/Pitch IMU Drift Compensation |
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| **Forensic Event Engine** | Asynchronous, Bounded 1,000-Event Prioritized Drop Queue, SQLite Batch Persistence |
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| **Event De-duplication** | State-Machine Level (Single Warning on Entry, Single Recovery Event with Excursion Duration/Metrics on Exit) |
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| **Database Schema Version** | Schema 5 (`field_test_events`, `field_test_summaries` with full indexing on `rideId`, `timestamp`, `eventType`, `severity`) |
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| **Test Suite Results** | **100 Tests Executed, 100 Passed (0 Failed, 0 Flaky)** |
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| **Release Artifact Status** | **Built Cleanly (`app-release.apk` 63.3 MB)** |
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---
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## 1. Executive Verdict & Validation Boundary
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```
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+==================================================================================================+
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| EXECUTIVE VERDICT |
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| >>> READY FOR REAL-WORLD FIELD TEST <<< |
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| DISTINCTION NOTICE: |
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| 1. Software Validation: COMPLETE. Telemetry ingest, quality scoring, event de-duplication, |
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| forensic event batching, crash recovery, and export systems are fully verified. |
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| 2. Physical Validation: PENDING. Real physical dynamics, engine vibration, cellular handover, |
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| and thermal throttling require mounting the device to a motorcycle for a 30-60 min test. |
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+==================================================================================================+
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```
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---
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## 2. Forensic Event Architecture & Taxonomy
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The forensic system captures 40 standard event categories across critical system boundaries without blocking the real-time 20Hz telemetry loop:
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```mermaid
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flowchart TD
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A[Hardware Sensors\nGPS / IMU / Compass] --> B[TelemetryService 20Hz]
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B --> C[TelemetryValidator]
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C -->|Validated Sample + QualityScore| D[FieldTestLogger]
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D -->|State Machine Analysis| E{Threshold Cross / State Change?}
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E -->|Yes| F[Bounded Prioritized Queue\nCap: 1000 Events]
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E -->|Duplicate State| G[Accumulate Max Excursions]
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F -->|Flush Every 3s| H[(SQLite Database\nfield_test_events)]
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F -->|Live Stream| I[In-Memory Circular Buffer\n500 Events -> UI Timeline]
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```
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### Forensic Event Categorization (36 Enum Types)
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1. **Lifecycle & Session**: `RIDE_STARTED`, `RIDE_STOPPED`, `APP_PAUSED`, `APP_RESUMED`, `FOREGROUND_SERVICE_STARTED`, `FOREGROUND_SERVICE_STOPPED`
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2. **GPS Pipeline**: `GPS_STALE`, `GPS_RECOVERED`, `GPS_JUMP_REJECTED`, `GPS_ACCURACY_DEGRADED`, `GPS_INITIALIZED`, `GPS_ERROR`
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3. **IMU & Motion Pipeline**: `IMU_SATURATION`, `IMU_RECOVERED`, `SENSOR_INITIALIZED`, `SENSOR_ERROR`, `CALIBRATION_STARTED`, `CALIBRATION_COMPLETED`
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4. **Telemetry Heartbeat**: `TELEMETRY_GAP`, `TELEMETRY_RECOVERED`, `TIMESTAMP_ERROR`, `SAMPLE_ACCEPTED`, `SAMPLE_SUSPECT`, `SAMPLE_REJECTED`
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5. **Dynamics & Performance**: `ACCELERATION_EVENT`, `BRAKING_EVENT`, `PERFORMANCE_RUN_STARTED`, `PERFORMANCE_RUN_COMPLETED`, `PERFORMANCE_RUN_REJECTED`
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6. **Database & Storage**: `DATABASE_FLUSH`, `DATABASE_QUEUE_WARNING`, `DATABASE_QUEUE_OVERFLOW`, `DATABASE_RECOVERY`
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7. **Road Safety & Alerts**: `ROAD_ALERT_RECEIVED`, `TTS_ANNOUNCED`, `AUDIO_FAILURE`, `NETWORK_ERROR`
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8. **Export Subsystem**: `EXPORT_STARTED`, `EXPORT_COMPLETED`, `EXPORT_FAILED`
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---
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## 3. Event De-duplication Strategy
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High-frequency 20Hz telemetry can emit 1,200 samples per minute. To prevent database bloating and log inundation, stateful de-duplication was implemented:
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| Outage / Fault State | Transition In (Entry) | Sustained Outage Behavior | Transition Out (Exit / Recovery) |
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|---|---|---|---|
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| **GPS Fix Staleness (>2000ms at >3 MPH)** | Emits 1 `GPS_STALE` warning with initial age and speed | Accumulates `maxGpsAgeMs`, `minAccuracy`, `maxAccuracy` silently | Emits 1 `GPS_RECOVERED` info event with total outage duration, max GPS age, and speed |
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| **GPS Accuracy Degradation (>35m)** | Emits 1 `GPS_ACCURACY_DEGRADED` warning | Updates worst accuracy tracker | Emits 1 `GPS_RECOVERED` info event when precision drops below $\le 15\text{m}$ |
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| **IMU Saturation ($>120\text{ m/s}^2$)** | Emits 1 `IMU_SATURATION` error | Prevents redundant event generation | Emits 1 `IMU_RECOVERED` info event upon returning to normal dynamic range |
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| **Telemetry Gap ($>2000\text{ms}$)** | Emits 1 `TELEMETRY_GAP` warning with delta time | Tracks max gap length | Emits 1 `TELEMETRY_RECOVERED` info event with elapsed gap seconds |
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---
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## 4. Database Schema & Migration (Version 5)
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Drift database upgraded cleanly to `schemaVersion = 5` with optimized B-tree indices:
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```sql
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-- Forensic Events Table
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CREATE TABLE IF NOT EXISTS field_test_events (
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id INTEGER NOT NULL PRIMARY KEY AUTOINCREMENT,
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ride_id INTEGER REFERENCES rides(id),
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timestamp INTEGER NOT NULL,
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event_type TEXT NOT NULL,
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severity TEXT NOT NULL,
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message TEXT NOT NULL,
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telemetry_timestamp INTEGER,
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gps_age_ms INTEGER,
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speed REAL,
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latitude REAL,
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longitude REAL,
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gps_accuracy REAL,
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lean_angle REAL,
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longitudinal_g REAL,
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lateral_g REAL,
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overall_confidence REAL,
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metadata TEXT
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);
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CREATE INDEX IF NOT EXISTS idx_field_test_events_ride_id ON field_test_events(ride_id);
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CREATE INDEX IF NOT EXISTS idx_field_test_events_timestamp ON field_test_events(timestamp);
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CREATE INDEX IF NOT EXISTS idx_field_test_events_type ON field_test_events(event_type);
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CREATE INDEX IF NOT EXISTS idx_field_test_events_severity ON field_test_events(severity);
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-- Forensic Ride Summaries Table
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CREATE TABLE IF NOT EXISTS field_test_summaries (
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id INTEGER NOT NULL PRIMARY KEY AUTOINCREMENT,
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ride_id INTEGER NOT NULL REFERENCES rides(id),
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start_time INTEGER NOT NULL,
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end_time INTEGER,
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duration_seconds INTEGER NOT NULL,
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total_samples INTEGER NOT NULL,
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valid_samples INTEGER NOT NULL,
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suspect_samples INTEGER NOT NULL,
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rejected_samples INTEGER NOT NULL,
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valid_percentage REAL NOT NULL,
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suspect_percentage REAL NOT NULL,
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rejected_percentage REAL NOT NULL,
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gps_fix_count INTEGER NOT NULL,
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gps_stale_event_count INTEGER NOT NULL,
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gps_jump_reject_count INTEGER NOT NULL,
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max_gps_age_ms INTEGER,
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average_gps_accuracy REAL,
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worst_gps_accuracy REAL,
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telemetry_gap_count INTEGER NOT NULL,
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max_telemetry_gap_ms INTEGER,
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imu_saturation_count INTEGER NOT NULL,
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max_speed_mph REAL,
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max_lean_angle REAL,
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max_longitudinal_g REAL,
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max_lateral_g REAL,
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acceleration_event_count INTEGER NOT NULL,
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braking_event_count INTEGER NOT NULL,
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zero_to_60_count INTEGER NOT NULL,
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zero_to_100_count INTEGER NOT NULL,
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best_zero_to_60 REAL,
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best_zero_to_100 REAL,
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database_samples_written INTEGER NOT NULL,
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database_samples_lost INTEGER NOT NULL,
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event_count INTEGER NOT NULL,
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overall_confidence REAL NOT NULL,
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ride_quality_score INTEGER NOT NULL,
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ride_quality_rating TEXT NOT NULL,
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was_recovered_after_crash INTEGER NOT NULL,
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was_interrupted INTEGER NOT NULL,
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export_integrity TEXT NOT NULL
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);
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CREATE INDEX IF NOT EXISTS idx_field_test_summaries_ride_id ON field_test_summaries(ride_id);
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```
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---
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## 5. Forensic Export Bundle Specification
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The export subsystem (`field_test_export_service.dart`) produces a self-contained forensic archive:
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1. **`field_test_events.csv`**:
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- `timestamp,ride_id,event_type,severity,message,speed,latitude,longitude,gps_accuracy,gps_age_ms,lean_angle,longitudinal_g,lateral_g,confidence,metadata`
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2. **`field_test_session.json`**: Complete structured forensic bundle including session metadata, computed quality summary, serialized event timeline, performance runs, and diagnostic counters.
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3. **`telemetry.csv`**: Complete 20Hz raw/filtered sensor sample trace.
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4. **`ride.gpx`**: Standard XML GPS track trace with custom extensions for lean angle, speed, and acceleration.
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---
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## 6. Comprehensive Verification Summary
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### Static Analysis
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```
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flutter analyze lib/ test/
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Analyzing 2 items...
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No issues found! (ran in 3.7s)
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```
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### Test Suite Execution
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```
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flutter test
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00:11 +100: All tests passed! (100 total unit, integration, and replay tests)
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```
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### 30-Minute Synthetic Replay Test Results
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- **Urban Stop/Start (10 min)**: Verified stationary wander suppression and 0-35 MPH transitions.
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- **Highway Cruise (15 min)**: Verified stable $0.02\text{g}$ baseline and 0-60 MPH launch detection.
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- **Mountain Cornering (5 min)**: Verified up to $41.5^\circ$ lean angle captures and $-0.88\text{g}$ braking event detection.
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- **Fault Injections**: Verified graceful detection of 10s GPS overpass dropout, 1 teleport jump rejection, 1 3.0s telemetry gap, and 1 IMU saturation spike.
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- **Summary Quality Score**: Verified $\ge 85 / 100$ (`EXCELLENT` rating).
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---
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## 7. Rider Field-Testing Guide (Physical Real-World Test)
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To execute the physical validation test on your motorcycle:
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1. **Mount Phone**: Secure phone in a rigid motorcycle mount (RAM mount, Quad Lock, or stem mount).
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2. **Launch Application**: Open MotorSignal and verify GPS has locked (Green dot / Accuracy $\le 10\text{m}$).
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3. **Arm Field Test Mode**: Go to **Settings $\to$ Field Test Mode** and ensure the switch is **ON** (Logger Status displays `ARMED`).
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4. **Start Ride**: Tap **Start Ride** on the main dashboard.
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5. **Ride Without Interaction (30–60 Minutes)**:
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- Perform a mix of stoplight urban riding, open cruising, and corners.
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- You do NOT need to look at or touch the phone during the ride.
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6. **Finish Ride**: At the end of your trip, tap **Finish Ride**.
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7. **Inspect Forensic Report**:
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- Go to **Settings $\to$ Field Test Mode $\to$ View Reports**.
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- Review your **Ride Quality Score**, **Sensor Health**, **Performance Runs**, and **Event Timeline**.
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- Tap the **Share/Export** button in the AppBar to export the complete ZIP package (`field_test_events.csv`, `field_test_session.json`, `ride.gpx`).
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