# Adaptive quaternion tracking with nonlinear extended state observer

> Research article (Acta Astronautica, 2017) · cited 18× · AI/ML

**Wikidata**: [openalex:W2737921496](https://www.wikidata.org/wiki/openalex:W2737921496)  
**Source**: https://4ort.xyz/entity/adaptive-quaternion-tracking-with-nonlinear-extended-state-observer