1. Zheng, W., Wang, Y.D., Tang, G.J., et al.: X-Ray Pulsar Navigation Theory and Application. Science Press, Beijing (2015)
2. William, H.B.: Deep impact mission design. Space Sci. Rev. 117(2), 23–42 (2005)
3. Yang, H.F., Wang, Z., Fu, H.: Integrated navigation for mars final approach based on doppler radar and X-ray pulsars with atomic clock error. Acta Astronaut. 159(3), 308–318 (2019)
4. Zhang, H., Jiao, R., Xu, L.P.: Formation of a satellite navigation system using X-ray pulsars. Publ. Astron. Soc. Pac. 131(998), 045002 (2019)
5. Qiang, X., Wang, H.L., Feng, L.: A novel X-ray pulsar integrated navigation method for ballistic aircraft. Optik 175(8), 28–38 (2018)