A more precise estimation method of the Zero Doppler Time has been improved, and the frequency synchronization is achieved.
文章改进了零多普勒时间的估计方法，提高了其估计精度，从而较好地实现了频率同步。
This paper describes the issues in terms of time synchronization in satellite navigation systems, satellite navigation device zero point, and device zero point calibration.
概述了卫星导航系统的时间同步问题和卫星导航的设备零值及其标校问题。
The proposed controller could stabilize the motion of each actuator, and meanwhile synchronize all actuators' motions so that both position and synchronization errors converged to zero.
所设计的控制器能够在保证每单个执行机构运动稳定的同时还可以保证所有执行机构的运动同步，使位置误差和位置同步误差都收敛到零。
Its communication overhead is almost zero compared with the general data synchronization algorithms.
相比于常规同步算法，其通信开销几乎为零。
The zero-crossings of the AC voltage and digital frequency synthesizer are used in solving the two main problems in frequency hopping system-synchronization and fast frequency synthesizing.
利用电力系统三相交流电压过零点和高速数字频率合成器解决了跳频系统中同步和快速频率合成的两个关键问题。
The zero-crossings of the AC voltage and digital frequency synthesizer are used in solving the two main problems in frequency hopping system-synchronization and fast frequency synthesizing.
利用电力系统三相交流电压过零点和高速数字频率合成器解决了跳频系统中同步和快速频率合成的两个关键问题。
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