1. It is called celestial navigation.

2. Celestial navigation is basic model of autonomous orientation navigation of the spacecraft around the earth.

3. The Phoenicians developed celestial navigation and ship-building techniques to become the first mariners to be able to venture away from sight of the land.

4. RACID's are successfully employed in star tracking and celestial navigation applications where only designated stars within the canopy of space are read and processed for positional vectoring.

5. Based on the technical requirements of celestial navigation equipment, the overall construction of the star simulator is presented.

6. The research of stars map bottom procession in celestial navigation has been done in this dissertation.

7. Autonomous celestial navigation system is a typical nonlinear, non-Gaussian dynamic system.

8. Autonomous celestial navigation system is a typical nonlinear, non-Gaussian dynamic system. Extended Kalman filter (EKF) is widely used in spacecraft navigation.

9. New integrated marine navigation system, the marine celestial navigation system based on the Electronic Chart Display and Information System (ECDIS), is presented and established in this paper.

10. Summary: Pocket Stars is an astronomy application featuring an integrated star chart, ephemeris, and celestial navigation calculator.

11. "There's a definite logic to his analysis, " Phillip Sadler, a celestial navigation expert at the Harvard-Smithsonian Center for Astrophysics, told Space.com.

12. Commercial uses for mathematical workstations are vast: From basic engineering to designer drugs and from gene therapy to celestial navigation, mathematics rules the world.

12. try its best to gather and create good sentences.

13. China is an old country, its ancient people had knowledge of distant seas and of celestial navigation.

14. The star tracker is the primary part of airborne celestial navigation device. Random vibration is an important invalidation factor of the star tracker.

15. The conclusions are useful for the design of autonomous celestial navigation system based on UPF.

16. Celestial navigation is an important means for accurate navigation, and the apparent place of celestial bodies is an important data of the celestial navigation.