# A state-constrained tracking approach for Kalman filter-based ultra-tightly coupled GPS/INS integration

> Research article (GPS Solutions, 2019) · cited 12× · AI/ML

**Wikidata**: [openalex:W2924947689](https://www.wikidata.org/wiki/openalex:W2924947689)  
**Source**: https://4ort.xyz/entity/a-state-constrained-tracking-approach-for-kalman-filter-based-ultra-tightly-coupled-gps-ins-integration