本文提出了一种专门用于数字VSB解调的载波相位跟踪环。
This paper proposes a carrier phase tracking loop dedicated for VSB demodulation.
推导了GPS接收机中多径效应引入的最大载波相位跟踪误差的闭合形式。
The closed expression form of the maximum carrier phase tracking error caused by multipath effect is derived in this paper based on multipath signal characteristics and GPS receiver work mechanism.
基于非相关早减迟延时锁定环和反正切载波跟踪环，得出了由一般形式的误差解析表达式导出的码相和载波相位跟踪误差曲线。
Based on noncoherent DLL and arctan carrier PLL, the curves of tracking errors in general forms are given after a series of computing and simulation.
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.
由于有锁频环的频率牵引，锁相环路滤波器可以设计得很窄，具有很好的抑噪性能，满足精确跟踪载波相位的要求。
Due to the frequency pulling of FLL, the passband of the filter in PLL can be made very narrow to suppress the noise, and the PLL can lock carrier's phase with high accuracy.
在信号的中频数字接收过程中，数字下变频、载波频率与相位跟踪是设计的关键所在。
In the process of signal digital intermediate-frequency received, digital down convertion, frequency tracking of carrier and phase locked loop are the keys.
载波恢复中高精度的频偏检测与跟踪是高性能锁相位环路实现的必要条件。
High precise measuring and tracking of carrier frequency-deviation is necessary to the realization of a high performance phase locked loop in carrier recovery.
由于有锁频环的频率牵引，锁相环路滤波器可以设计得很窄，具有很好的抑噪性能，满足精确跟踪载波相位的要求。
Because of the frequency lock loop traction PLL filter can be designed very narrow, with very good noise suppression performance, to meet the precise requirements of carrier phase tracking.
它直接对接收信号的相角进行处理，以完成载波频率的快速捕获和载波相位的跟踪。
It directly processes the phase of the received signal and realize fast capture of the carrier frequency and keeping the carrier phase.
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.
利用计算机仿真方法详细分析不同噪声环境下，载波频差对码跟踪环路输出、码相位差对载波跟踪环路等因素的影响；
Then the influence of carrier frequency error on code loop and influence of code phase error on carrier loop in different noise are discussed in simulation.
利用计算机仿真方法详细分析不同噪声环境下，载波频差对码跟踪环路输出、码相位差对载波跟踪环路等因素的影响；
Then the influence of carrier frequency error on code loop and influence of code phase error on carrier loop in different noise are discussed in simulation.
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