gps-denied-desktop/docs/03_tests/49_degraded_satellite_data_spec.md

Cross-Cutting Acceptance Test: Degraded Satellite Data

Summary

Validate system robustness with outdated or lower-quality satellite imagery per operational constraints.

Test Description

Test system performance when satellite data is:

• Outdated (2+ years old)
• Lower resolution (Zoom 17-18 instead of 19)
• Partially missing (some areas without coverage)
• From different season (winter satellite, summer flight)

Test Steps

1. Use deliberately outdated satellite tiles
2. Process AD000001-030
3. Measure accuracy degradation
4. Verify L2 (DINOv2) still matches despite appearance changes

Success Criteria

• System continues to operate (no crash)
• L2 retrieval still works (top-5 recall > 70%)
• Accuracy degrades gracefully (may not meet AC-2, but should meet relaxed threshold)
• Clear error/warning messages about data quality

Pass/Fail

Passes: System operational with degraded data, graceful degradation Fails: Complete failure, crashes, or no indication of data quality issues