# A Predefined-Time Extended-State Observer-Based Approach for Velocity-Free Attitude Control of Spacecraft

> Research article (IEEE Transactions on Aerospace and Electronic Systems, 2023) · cited 57× · AI/ML

**Wikidata**: [openalex:W4385154404](https://www.wikidata.org/wiki/openalex:W4385154404)  
**Source**: https://4ort.xyz/entity/a-predefined-time-extended-state-observer-based-approach-for-velocity-free-attitude-control-of-spacecraft