# Hybridized-GNSS Approaches to Train Positioning: Challenges and Open Issues on Uncertainty

> Research article (Sensors, 2020) · cited 33× · AI/ML

**Wikidata**: [openalex:W3014014695](https://www.wikidata.org/wiki/openalex:W3014014695)  
**Source**: https://4ort.xyz/entity/hybridized-gnss-approaches-to-train-positioning-challenges-and-open-issues-on-uncertainty