1) cyclic frequency error
循环频率误差
1.
The performance of CAB blind adaptive beamforming was analyzed under cyclic frequency error.
分析 CAB盲自适应波束形成算法中有限采样数据导致的 sinc窗循环泄漏效应及其在循环频率误差存在时的性能 。
2.
FRESH gets severe performance degradation,when there is a small mismatch in the cyclic frequency error of the desired signal.
利用循环平稳特性可以进行信号提取,频移滤波器对循环频率误差较为敏感。
3.
But all the algorithms performance will severely degrade when CFE (cyclic frequency error) exists.
本文提出一种改进算法 ,在估计循环相关矩阵时引入遗忘因子可以大大降低算法对循环频率误差的敏感性 ,计算机仿真验证了理论分析的正确
2) frequency error Frequency
循环频率差
3) circular error probability
循环误差概率
4) frequency error
频率误差
1.
A method of measuring TD-SCDMA signal frequency error based on virtual instrument is proposed.
提出了一种基于虚拟仪器的精确测量TD-SCDMA信号频率误差的方法,并给出了系统设计。
2.
The paper discusses frequency error generated by random phase undulation and gives Max.
讨论了随机相位波动产生频率误差,给出了在测量频率范围内随机相位波动产生的频率误差的最大均方根值误差。
3.
Small frequency error may exist in frequency sources between receiver and transmitter,because of the craft of devices when oven controlled crystal-oscillators of high stability are used in both transmitter and receiver.
机动式多基地地波超视距雷达是一种新型的雷达体制,发射站和接收站均采用高稳定度的恒温晶振作为频率源,但由于器件本身的工艺原因,收发站的两个频率源间可能存在微量的频率误差,这就使得接收站无法准确得到发射信息。
5) cyclic frequency
循环频率
1.
By scanning cyclic frequency domain, the modulating source signals can be demodulated in low and high frequency band of the cyclic domain.
讨论循环平稳信号的循环自相关函数特性 ,指出循环自相关函数不为零的循环频率对应着信号的周期成分。
2.
The method of scanning cyclic frequency is proposed to search modulators.
基于循环统计理论 ,对循环平稳信号进行处理 ,主要研究了信号的二阶循环统计特性 ,即循环自相关函数和循环谱密度 ,指出循环自相关函数不为零的循环频率对应着信号中的某些故障 ,并可以对调幅信号进行解调 。
3.
It has been found that at any ratio of the cyclic heat absorption and release time,there exists an optimum cyclic frequency for the engine that can maximize its output power.
以广义不可逆卡诺热机模型为研究对象,考虑工质与热源间传热服从线性唯象定律,研究热机性能与循环频率的关系。
6) cycle frequency
循环频率
1.
The relations among average power output, efficiency, available temperature drop and cycle frequency, stroke ratio are derived, which are different from those with Newton s law.
以内可逆卡诺热机模型为基础 ,考虑工质与热源间传热服从线性唯象传热定律 Q∝ (ΔT- 1 ) ,寻求循环频率与热机特性的关系。
2.
However,in the presence of interference with the same cycle frequency as desired signal and a random error in cycle frequency,cyclic adaptive beamforming algorithms suffer from severe performance degradation.
但是,当存在与期望信号具有相同循环频率分量的恶劣干扰以及循环频率存在误差时,传统循环平稳自适应波束形成算法的性能将急剧下降。
3.
The benefit of beamforming by exploiting cyclostationarity is the ability to extract SOIs from interference and noise with only a knowledge of cycle frequency.
大部分通信信号具有循环平稳特性,利用循环平稳特性进行波束形成的优点在于只需获取期望信号循环频率即可有效抑制干扰和各类噪声。
补充资料：频率计量(见时间频率计量)
频率计量(见时间频率计量)
frequency metrology: see time and frequency metrology
口n IQ liliang顷率频率计皿(f比quency metrolo盯) 计t。见时闰
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条