助手标题  
全文文献 工具书 数字 学术定义 翻译助手 学术趋势 更多
查询帮助
意见反馈
   phase estimator 的翻译结果: 查询用时:0.176秒
图标索引 在分类学科中查询
所有学科
电信技术
更多类别查询

图标索引 历史查询
 

phase estimator
相关语句
  相位估计器
     In this paper, the method to carry out the joint estimation to the message and channel processes is applied so that an optimal nonlinear phase estimator can be built.
     本文采用对消息和信道过程进行联合估计的方法,以建立最佳非线性相位估计器
短句来源
     The maximum- likelihood (ML) carrier phase estimator is completed, which the transmitted bits are considered as random variables.
     相位估计器把从信道译码得到的软判决信息当作训练序列,把每个发送比特当作一个随机变量,采用最大似然准则(ML,Maximum Likelihood)完成相位估计。
短句来源
     Finally, applying the results given out by computer, we come to the conclusion that the nonlinear phase estimator which is obtained by carrying out the joint estimation to the massage and channel processes is optimum.
     最后,应用计算机给出的结果,得出了对消息和信道过程进行联合估计所获得的非线性相位估计器为最优的结论。
短句来源
     Under ideal conditions, the adaptive phase estimator is that of maximum likelihood ratio. Hardware experiment shows good agreement with theoretical analysis and computer simulation.
     作者证明自适应相位估计器是理想条件下的最大似然比相位估计器,计算机仿真研究和硬件实验结果均表明该估计器有良好的性能,它的显著优点是同时完成了信号的检测和相位差的估计。
短句来源
     In this paper, a phase estimator of serial search acquisition is proposed for Direct-Sequences Spread-Spectrum(DS/SS) systems.
     该文提出一种基于直接序列扩频系统(DS/SS)的码相位估计器
短句来源
更多       
  码相位估计
     Serial search acquisition of m-sequences using a phase estimator
     码相位估计辅助m-序列串行捕获
短句来源
  “phase estimator”译为未确定词的双语例句
     Then, the phase estimator can further determine the phase of frequency response of OFDM channel.
     此后,相位估计机可以进一步对OFDM信道的相频响应进行估计。
短句来源
     Based on pendulum model, the three and higher order phase errors, which are caused by nonlinear phase history, can be compensated with rank two phase estimator and the improved rank one auto focus algorithms. Both the images from frequency components and linear frequency components can be obtained simultaneously by adopting the proposed method.
     在钟摆模型的基础上,利用二阶相位误差估计算法以及降阶算法可以补偿实际目标转动过程中因颠簸和不完全符合钟摆转动模型而引起的三阶以及更高阶相位项,从而同时得到舰船目标的二维频率图像和调频率图像。
短句来源
     Firstly,based on maximum a posteriori criterion,partially coherent multi user weight/phase estimator is given via theoretical analysis.
     本文首先基于最大后验概率准则从理论上推导出了部分相干多用户信码 /相位联合估计子的表达式 ;
短句来源
     The results indicate that this iterated phase estimator is practical in SAR autofocus procedure.
     结果表明,这种基于迭代方法计算特征向量相位的算法在SAR成像自聚焦过程中具有实用意义。
短句来源
     To compensate the three and higher order phase errors, rank two phase estimator is presented based on the available theory of rank one phase estimator. A robust auto-focus algorithm is also presented based on the Randon-Wigner algorithm and the idea of 'CLEAN'.
     为了补偿实际目标转动过程中 因不完全符合钟摆转动模型而引起的三阶及更高阶的相位误差,在一阶相位误差估计算法的基础上得出了二阶相位 误差估计方法,并结合Radon-wigner算法以及“CLEAN”法得出了比较稳健的相位自聚焦方法。
短句来源
更多       
查询“phase estimator”译词为用户自定义的双语例句

    我想查看译文中含有:的双语例句
例句
为了更好的帮助您理解掌握查询词或其译词在地道英语中的实际用法,我们为您准备了出自英文原文的大量英语例句,供您参考。
  phase estimator
The paper proposes a modified version of the Viterbi and Viterbi phase estimator, and compares this modified version with the original.
      
Frequency Independent Nonlinear Feedforward Phase Estimator
      
Coherent demodulation was implemented by using a pilot phase estimator per antenna observation.
      


In coherent communication, a message model has the randomly driv'ng property because of the target's dynamic characteristic. When the angle modulation signals made up of the message model have passed through a randomly time-varying channel, a complex nonlinear estimation model is formed. In this paper, the method to carry out the joint estimation to the message and channel processes is applied so that an optimal nonlinear phase estimator can be built.In this paper, we first set up the message model by...

In coherent communication, a message model has the randomly driv'ng property because of the target's dynamic characteristic. When the angle modulation signals made up of the message model have passed through a randomly time-varying channel, a complex nonlinear estimation model is formed. In this paper, the method to carry out the joint estimation to the message and channel processes is applied so that an optimal nonlinear phase estimator can be built.In this paper, we first set up the message model by an expanding state--variable approach and then discuss the conditional Fokker-Planck equation, and from here, derive the estimation equation and the variance equation, construct the conditional mean filter algorithm. In terms of applying this algorithm and the extended Kalman filter algorithm, the optimal nonlinear phase estimators, which are obtained when the angle modulation signals drived by a white noise have passed through the randomly time-varying channel, is derived.Finally, applying the results given out by computer, we come to the conclusion that the nonlinear phase estimator which is obtained by carrying out the joint estimation to the massage and channel processes is optimum.

相干通信中,由于目标的动态特性,使消息模型具有随机策动的性质。当此消息模型构成的角调信号通过随机时变信道后,形成复杂的非线性估计模型。本文采用对消息和信道过程进行联合估计的方法,以建立最佳非线性相位估计器。 文中首先应用扩大状态变量方法建立消息模型,然后讨论条件福克—普朗克方程,并由此导出估计方程和方差方程,构造条件均值滤波算法。应用这一算法以及推广卡尔曼滤波算法,导出了由白噪声策动的角调信号通过随机时变信道后的最佳非线性相位估计器。 最后,应用计算机给出的结果,得出了对消息和信道过程进行联合估计所获得的非线性相位估计器为最优的结论。

Adaptive notch filter has been applied in many fields. In this paper, mathods of designing extranarrow-band adaptive filter and adaptive notch filter are proposed, a phase estimator based on adaptive filtering is also presented. Under ideal conditions, the adaptive phase estimator is that of maximum likelihood ratio. Hardware experiment shows good agreement with theoretical analysis and computer simulation.

本文介绍自适应陷波滤波器的基本理论,提出了设计极窄带自适应陷波器和滤波器的方法,介绍了用作相位估计器的概念。作者证明自适应相位估计器是理想条件下的最大似然比相位估计器,计算机仿真研究和硬件实验结果均表明该估计器有良好的性能,它的显著优点是同时完成了信号的检测和相位差的估计。

All digital receiver is a new concept proposed in recent years. It needs that a local reference carrier used to demodulation (mixing osicillator) and the A/D converter sampling clock run at fixed fre-quencys and do not require feedback control of signals. It is also needed to carry out some other works such as the elimination of carrier phase difference and clock synchronization error, the detection of signals etc. In the subsequent digital signal processing part. The carrier phase recovery and clock synchronization...

All digital receiver is a new concept proposed in recent years. It needs that a local reference carrier used to demodulation (mixing osicillator) and the A/D converter sampling clock run at fixed fre-quencys and do not require feedback control of signals. It is also needed to carry out some other works such as the elimination of carrier phase difference and clock synchronization error, the detection of signals etc. In the subsequent digital signal processing part. The carrier phase recovery and clock synchronization are two main problems for the all digital receivers. In this paper, the problem of carrier phase recovery is considered. It has discussed the difference between estimation of eiθ and estimation of θ about algorithms of carrier phase recovery and the theoretical analysis is given. The result of theoretical analysis has shown that estimation of eiθ has much better performance than estimation of θ in statistics. A new method to estimate eiθ is proposed. The new method gains two advantages: (1) The phase interval jump doss not exist. (2) The phase estimator has a simple and fully linear structure which is easy to be implemented. The results of computer simulation for 16-QAM signal are also reported which shows the new method is feasible.

全数字接收机是在最近几年内提出的一个新的概念,它要求解调用的本地参考载波和采样时钟都振荡于固定的频率,不需要进行反馈控制,其他一些工作:载波相位误差和时钟定时误差的消除、信号的判定等全部由采样后的数字信号处理器完成。载波相位恢复问题和时钟同步问题是目前关于全数字接收机研究中的两个最主要的问题。本文仅讨论载波相位恢复问题。在本文中研究了载波相位估计算法中估计e~(jθ)和估计θ的差异,从理论上证明了估计e~(jθ)比估计θ有更好的统计特性,并且给出了一种估计e~(jθ)的方法,此方法有二个突出的优点:(1)它可以消除载波相位恢复过程中的相位区间跳变。(2)相位估计器的结构简单,它是全线性的,易于实现。利用16-QAM信号进行计算机仿真证实了此算法的可行性。

 
<< 更多相关文摘    
图标索引 相关查询

 


 
CNKI小工具
在英文学术搜索中查有关phase estimator的内容
在知识搜索中查有关phase estimator的内容
在数字搜索中查有关phase estimator的内容
在概念知识元中查有关phase estimator的内容
在学术趋势中查有关phase estimator的内容
 
 

CNKI主页设CNKI翻译助手为主页 | 收藏CNKI翻译助手 | 广告服务 | 英文学术搜索
版权图标  2008 CNKI-中国知网
京ICP证040431号 互联网出版许可证 新出网证(京)字008号
北京市公安局海淀分局 备案号:110 1081725
版权图标 2008中国知网(cnki) 中国学术期刊(光盘版)电子杂志社