# Precise Indoor Positioning Based on Acoustic Ranging in Smartphone

> Research article (IEEE Transactions on Instrumentation and Measurement, 2021) · cited 72× · AI/ML

**Wikidata**: [openalex:W3165055106](https://www.wikidata.org/wiki/openalex:W3165055106)  
**Source**: https://4ort.xyz/entity/precise-indoor-positioning-based-on-acoustic-ranging-in-smartphone