# Calibration-Free 3D Indoor Positioning Algorithms Based on DNN and DIFF

> Research article (Sensors, 2022) · cited 12× · AI/ML

**Wikidata**: [openalex:W4290755322](https://www.wikidata.org/wiki/openalex:W4290755322)  
**Source**: https://4ort.xyz/entity/calibration-free-3d-indoor-positioning-algorithms-based-on-dnn-and-diff