X射线脉冲星计时导航应用模式与空间试验进展

结合国家导航体系发展与工程应用迫切需求，主要讨论了X射线脉冲星计时导航的应用模式，并介绍了国内外空间试验进展。总结了脉冲星计时地基射电与空间X射线观测的特点和发展现状，阐释了脉冲星时研究与发展的重要意义；总结并归纳了X射线脉冲星导航的应用特点和现有水平，讨论了X射线脉冲星导航的技术优势和典型应用场景；总结了国内外X射线脉冲星计时导航的空间试验进展。根据国内外的空间试验结果，脉冲星时稳定度可达10-14量级，脉冲星导航精度可达到km量级，初步具备在轨应用价值。因此，加快推进国内脉冲星计时导航技术的在轨演示验证与工程应用具有重要意义。

Application mode and space experiment progress of X-ray pulsar timing and navigation

The application mode of X-ray pulsar timing navigation is discussed and the progress of space experiments based on the development and application requirements of the national navigation system is introduced. Firstly, the characteristics and current development status of ground-based radio and space X-ray observations on pulsar timing are summarized, and the significance of pulsar timing research and development is explained. Secondly, the application characteristics and current levels of X-ray pulsar navigation are summarized, and the technical advantages and typical application scenarios of X-ray pulsar navigation are discussed. Thirdly, the progress of space experiments on X-ray pulsar timing navigation at home and abroad is summarized. According to the results of space experiments, the timing stability of pulsars can reach the order of 10-14, and the navigation accuracy of pulsars can reach the order of kilometer, which has preliminary value for in orbit applications. Therefore, accelerating the in-orbit demonstration and engineering application of pulsar timing navigation technology in China is of great significance.