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- Tracking is the part of the baseband signal processing.The carrier phase tracking loop, the carrier frequency tracking loop, and the code tracking loop are the three tracking loops in receiver. 追踪是基频讯号处理的一部分,再接收机中有三个追踪迴路,其分别为载波相位追踪迴路、载波频率追踪迴路及码追踪迴路。
- 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. 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。
- carrier phase tracking 载波跟踪
- Here the bit tracking loop,code tracking loop and carrier tracking loop work simultaneously to complete synchronization of data,code and carrier phase. 该方法采用位同步环、码跟踪环和载波跟踪环同时工作,协同完成数据位、伪码和载波相位的同步。
- Here the bit tracking loop, code tracking loop and carrier tracking loop work simultaneously to complete synchronization of data, code and carrier phase. 该方法采用位同步环、码跟踪环和载波跟踪环同时工作,协同完成数据位、伪码和载波相位的同步。
- In direct conversion navigation receiver,due to the IQ mismatch,there will be track error in carrier phase and code phase. 分析了直接下变频导航接收机中,I、Q信号的非正交引起的载波及伪码的跟踪误差。
- Combined with IEEE802.16-2004, this paper designs a simple OFDM receiver with the component of frame start synchronizer, frequency carrier estimator, phase track and channel estimation. 结合IEEE802.;16-2004标准阐述了OFDM PHY的结构,并且设计了一个简单的OFDM接收机方案:包括帧起始同步、频偏估计、相位跟踪和信道估计。
- A data aided carrier phase acquisition algorithm for OQPSK is studied. 摘要论文研究了一种OQPSK数据辅助式载波相位捕获算法。
- The brief description of digital downconverter,acquisition of PN code phase, PN code phase tracking and data demodulating is given in this paper. 本文提出了一种高动态高码率数字化解扩接收机的设计方案,同时简要介绍了其数字下变频、伪码初相位捕获、伪码相位跟踪和数据解调的基本设计思想。
- The simulation for QPSK shows that the algorithm can estimate the carrier phase and frequency offset accurately and reduce the system BER effectively. 结果表明,用该算法可以精确估计载波相位和频差,有效地降低系统的误码率。
- This paper presents the effect of carrier phase error on MC-CDMA performance in downlink mobile communications. 该文对下行无线通信信道中MC-CDMA系统的载波误差性能进行了研究。
- As the name of the new mode says, PSK (phase shift keying) modulates the carrier phase. 正如这种新操作模式的名字所指的,PSK(相移键控)调制载波的相位。
- The resulting modulation of the differential phase between mode and mode in fiber is detected by white-light interferometry and active homodyne phase tracking. 利用白光干涉和主动零差相位跟踪技术检测出相位差的变化,从而得到被测电压。
- If the "0" and "1" to change the carrier phase, called phase shift keying (PSK). 如果"0"和"1"来改变载波的相位,则称为相移键控(PSK)。
- This paper introduces a new method of caculating baseline using carrier phase DGPS and then caculating the attitude of the vehicle based on this baseline. 本文介绍了利用差分GPS求解的基线向量,并用此基线向量来确定载体姿态的算法。
- The effect on modulation and demodulation of QPSK via carrier phase noise can not be ignored, and it is difficult to analyze. 载波相位噪声对QPSK调制解调的影响是不可忽略的,也是难以分析的。
- The key problem of DGPS carrier phase measurements for two moving bodies is how to get a fast ambiguity solution under varying baselines. 摘要GPS双移动载波相位差分技术的关键,是如何实现可变基线条件下整周模糊度的快速解算。
- This paper deals with the equivalence between the ambiguity function me-thod and the least square method with GPS carrier phase observables. 本文主要讨论了GPS相位观测值模糊度函数法处理与最小二乘法处理(如双次差分相位观测值的最小二乘处理方法)的等价性。
- Study for the matchable combinations of Galileo/GPS carrier phase observations[J].Chinese Journal of Space Science,2006,26 (4):287-291. Galileo/GPS载波相位组合观测值可匹配的研究[J].;空间科学学报;2006;26(4):287-291
- In order to satisfy the needs of the pitch accuracy of WI coder and synthesize phase track correctly,a super resolution pitch detection algorithm named MCAMDF-NCCF-FRAC based on MCAMDF-NCCF is also given to get fractional pitch. 为了满足不同环境下WI编码器对基音检测高精度的要求;在合成端更准确地恢复相位轨迹;本文又基于MCAMDF-NCCF算法提出了高精度MCAMDF-NCCF-FRAC基音检测算法以计算分数基音.
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