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Remote Synchronization System of Quasi- Zenith Satellites Using Multiple Positioning Signals for Feedback Control

机译：利用多个定位信号进行反馈的准天顶卫星远程同步系统

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摘要

We have developed a new control method for the Quasi-Zenith Satellite (QZS) remote synchronization system for an onboard crystal oscillator (RESSOX). The new method utilizes both L1 and L2 positioning signals of the QZS. We also found that precise orbit information and the estimation of delays, such as those caused by the ionosphere and troposphere, are not necessary to realize the RESSOX technology. The estimation of the delays of the L1-, L2- and Ku-band signals caused by the ionosphere and other sources can be calculated separately during feedback control, and the results of Ku-band delay are used to generate the RESSOX control signal. The simulation results showed that synchronization of within 3 ns between the ground site clock and the QZS site clock is achievable. Experimental results on the ground also confirmed that synchronization within 3 ns is feasible.
机译：我们已经为车载晶体振荡器（RESSOX）的准天顶卫星（QZS）远程同步系统开发了一种新的控制方法。新方法利用了QZS的L1和L2定位信号。我们还发现，精确的轨道信息和延迟的估计（例如由电离层和对流层引起的延迟）对于实现RESSOX技术不是必需的。由电离层和其他源引起的L1，L2和Ku频段信号的延迟估计可以在反馈控制期间分别计算，并且使用Ku频段延迟的结果生成RESSOX控制信号。仿真结果表明，地面站点时钟和QZS站点时钟之间可在3 ns内实现同步。地面上的实验结果也证实了3 ns内的同步是可行的。

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