# Smartphone PDR positioning in large environments employing WiFi, particle filter, and backward optimization

> Research article (2017 International Conference on Indoor Positioning and Indoor Navigation (IPIN), 2017) · cited 12× · AI/ML

**Wikidata**: [openalex:W2770838269](https://www.wikidata.org/wiki/openalex:W2770838269)  
**Source**: https://4ort.xyz/entity/smartphone-pdr-positioning-in-large-environments-employing-wifi-particle-filter-and-backward-optimization