# Towards an Efficient, Intelligent, Opportunistic Smartphone Indoor Positioning System

> Research article (NAVIGATION Journal of the Institute of Navigation, 2015) · cited 27× · AI/ML

**Wikidata**: [openalex:W1716659877](https://www.wikidata.org/wiki/openalex:W1716659877)  
**Source**: https://4ort.xyz/entity/towards-an-efficient-intelligent-opportunistic-smartphone-indoor-positioning-system