# X-ray pulsar navigation based on two-stage estimation of Doppler frequency and phase delay

> Research article (Aerospace Science and Technology, 2021) · cited 18× · AI/ML

**Wikidata**: [openalex:W3120645727](https://www.wikidata.org/wiki/openalex:W3120645727)  
**Source**: https://4ort.xyz/entity/x-ray-pulsar-navigation-based-on-two-stage-estimation-of-doppler-frequency-and-phase-delay