# Design of a Smartphone Indoor Positioning Dynamic Ground Truth Reference System Using Robust Visual Encoded Targets

> Research article (Sensors, 2019) · cited 10× · AI/ML

**Wikidata**: [openalex:W2922024441](https://www.wikidata.org/wiki/openalex:W2922024441)  
**Source**: https://4ort.xyz/entity/design-of-a-smartphone-indoor-positioning-dynamic-ground-truth-reference-system-using-robust-visual-encoded-targets