二是在整个干涉数据的录取时间里，主动和被动两个雷达载波相位同步误差不能超过高程测量的精度要求所允许的误差。
Secondly, the phase synchronization error can not overrun a limit which is requested by elevation accuracy demand during the whole interferometric data acquirement time.
该方法使用了时频同步跟踪环路，从数据子载波提取相位误差，并利用频域插值补偿多个用户的估计频偏。
The system uses time-frequency tracking loops to extract phase errors from data subcarriers with frequency interpolation to compensate for the estimated carrier frequency offsets.
有关OFDM的关键技术，如载波同步、信道估计、相位噪声等，在理论和实践方面均取得了很显著的成果。
Significant results in the key technologies of OFDM, such as carrier synchronization, channel estimation, phase noise and so on have achieved in theory and practice.
采用了最大平均功率定时同步算法和最大似然载波相位估计算法。
The maximum mean power estimation timing recovery algorithm and the maximum-likelihood carrier phase estimation algorithm are employed.
在通信系统中，接收机的同步要求精确地估计一些参数，比如载波频率和相位偏移。
In communication systems, the synchronization of the receiver requires to accurately estimate a number of parameters such as the carrier frequency and phase offset.
本文研究全数字接收机中的同步技术，重点是MPSK信号的载波频偏和相位误差的估计和恢复算法。
This thesis deals with the synchronization technologies for all digital receiver, particularly carrier offset estimation for MPSK signal.
GPS接收机中信号捕获通过粗略调整本地复制信号的码相位和载波频率与卫星信号同步。
In a GPS receiver, the signal acquisition coarsely adjusts the code phase and the carrier frequency of locally generated replicas to align with the corresponding satellite signal.
载波同步通常采用一种闭环反馈回路来对载波相位进行跟踪。
Carrier synchronization is implemented by a kind of closed loop with degenerative feedback.
载波同步通常采用一种闭环反馈回路来对载波相位进行跟踪。
Carrier synchronization is implemented by a kind of closed loop with degenerative feedback.
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