# A New Quaternion-Based Kalman Filter for Human Body Motion Tracking Using the Second Estimator of the Optimal Quaternion Algorithm and the Joint Angle Constraint Method with Inertial and Magnetic Sensors

> Research article (Sensors, 2020) · cited 25× · AI/ML

**Wikidata**: [openalex:W3093926900](https://www.wikidata.org/wiki/openalex:W3093926900)  
**Source**: https://4ort.xyz/entity/a-new-quaternion-based-kalman-filter-for-human-body-motion-tracking-using-the-second-estimator-of-the-optimal-quaternion