自由空间便携式微波频率传播及其对地-星同步的影响
Portable Microwave Frequency Dissemination in Free Space and Implications on Ground-Satellite Synchronization
摘要：
自由空间频率传播与同步在全球导航卫星系统、射电天文学和合成孔径雷达等领域具有重要的应用价值。在本文中，我们展示了一个便携式射频传播计划，通过自由空间使用微波天线。该装置具有良好的环境适应性和较高的传播稳定性。频率信号在10 ~ 640 m范围内以固定的10 Hz锁定带宽进行不同距离的传播，讨论了传播稳定性随距离和平均时间的变化规律。初步外推结果表明，地星同步的传播稳定性可达$1\times10^{-12}/s$，远超过现有的各种方法，值得进一步研究。
英文摘要：
Frequency dissemination and synchronization in free space plays an important role in global navigation satellite system, radio astronomy and synthetic aperture radar. In this paper, we demonstrate a portable radio frequency dissemination scheme via free space using microwave antennas. The setup has a good environment adaptability and high dissemination stability. The frequency signal is disseminated at different distances ranging from 10 to 640 m with a fixed 10 Hz locking bandwidth, and the scaling law of dissemination stability on distance and averaging time is discussed. The preliminary extrapolation shows that the dissemination stability may reach $1\times10^{-12}/s$ in ground-to-satellite synchronization, which far exceeds all present methods, and is worthy for further study.
机构、总结、中文摘要均由AI分析而来，可能存在错误，请以论文正文为准。
