Glossary
Terms used in accessibility research and practice. Each entry has a definition, common aliases, and category tags.
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- Particle filter(also: Sequential Monte Carlo, Monte Carlo localization)
- A probabilistic algorithm that estimates a user's position by maintaining a set of weighted hypothetical locations (particles) and updating them based on sensor observations such as Bluetooth beacon signal strengths. In indoor navigation for people with visual impairments,…
- Pedestrian dead reckoning(also: PDR, Inertial navigation, Step-and-heading)
- A localization technique that estimates a person's position by counting their steps (to determine distance) and detecting turns (to determine heading changes) from a known starting point, using inertial sensors in a smartphone or wearable device. For blind indoor navigation,…
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