# On the Problem of Double-Filtering in PPP-RTK

> Research article (Sensors, 2022) · cited 11× · AI/ML

**Wikidata**: [openalex:W4313259660](https://www.wikidata.org/wiki/openalex:W4313259660)  
**Source**: https://4ort.xyz/entity/on-the-problem-of-double-filtering-in-ppp-rtk