Group B: sky view obstruction
This group tests how GPS accuracy changes with how much sky is visible: open plazas, streets between tall buildings, covered arcades and places underground.
Each session has 12 planned stops (below). After those, stops 13 to 16 are free: the participant picks any four places and stays at least 10 minutes at each.
Inside = inside a building. 2F-4F = second to fourth floor. Duration = the minimum time to stay.
| Stop | Context | Duration |
|---|---|---|
| 1 | Open space, clear sky (>80%), 15+ m from buildings | 15+ min |
| 2 | Street, clear sky, wide street with low buildings | 10+ min |
| 3 | Inside, ground floor, building in an open area | 15+ min |
| 4 | Open space, partial sky (50-80%), 5-10 m from buildings | 15+ min |
| 5 | Street, partial sky, medium-height buildings | 10+ min |
| 6 | Inside, near window, among medium-height buildings | 15+ min |
| 7 | Street, covered arcade (<50% sky) | 10+ min |
| 8 | Building-attached outdoor, covered terrace | 15+ min |
| 9 | Inside, ground floor, building in a covered arcade | 15+ min |
| 10 | Street, urban canyon (narrow, tall buildings) | 10+ min |
| 11 | Inside, 2F-4F, building in an urban canyon | 15+ min |
| 12 | Underground passage or basement, no sky | 10+ min |
Part of Experiment design.
Linked from Experiment design · Ground truth data