Demonstrating the feasibility using CS (Cyclostationary) algorithms to estimate frequency offset in selective channel.
验证了把CS(周期平稳过程算法)应用于选择性信道下进行频偏估计的可行性。
Second, a special 2-D the fourth-order time-average moment spectrum is defined to estimate frequency in zero mean multiplicative and additive noise.
定义了特殊的二维四阶时间平均多矩谱来估计信号频率。
Such "fire scars" in long-lived species like giant sequoias allow him to estimate the past frequency of forest fires.
这些在长寿物种，如巨红杉中留下的火灾印迹，使得他能够估计过去森林火灾的频次。
Indeed, from the basic statistics, the DB2 optimizer can only estimate the frequency of 'VALUE_Z' in COLUMN_Y.
实际上，通过基本统计信息，DB 2优化器只能估计' VALUE_Z '在COLUMN_Y中出现的频率。
If known, you can optionally specify an estimate for the execution frequency of each query.
如果知道的话，您可以选择指定每个查询的大致执行频率。
An estimate of usual frequency of participation in vigorous activities also was obtained.
通常参加剧烈运动的频率也被评估在内。
A parent-completed semi-quantitative food frequency questionnaire was used to estimate dietary intake.
饮食摄入的评估是根据一项由双亲完成的半定量食物频率问卷调查。
To estimate signal frequency and amplitude exactly under noisy circumstances, the excellent property of all-phase DFT restraining spectral leakage is mathematically proved.
为精确估计噪声环境中的信号频率和幅值，数学证明了全相位DFT优良的抑制频谱泄漏的性质。
Various existing synchronization algorithm to estimate symbol timing offset and carrier frequency offset can be classified into blind and pilot-aided methods and algorithm based on cyclic prefix.
目前，估计载波频率偏差和符号定时偏差的算法主要有数据辅助的方法和非数据辅助的方法以及基于循环前缀的算法。
Research results show that vortex frequency estimation method based on HHT can estimate vortex signal frequency accurately, and increase the antiinterference ability of the vortex flow meter.
研究结果表明，基于HHT的涡街频率估计方法，可以精确估计涡街信号频率并提高涡街流量计的抗干扰能力。
A new correlation-average method to estimate the frequency response of system is proposed to overcome the drawbacks of traditional ones.
针对传统方法估计系统幅频特性不精确的缺点，提出一种新的相关平均估计方法。
A frequency domain characterization method using low frequency ultrasound is put forward to estimate parameters of ultra thin elastic layers, such as: the sound velocity, thickness and density.
本文提出一种定量无损估计超薄弹性层声速、厚度和密度参数的低频超声波频域定征方法。
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。
In this paper, the first order approximate model of Doppler frequency is assumed, and an algorithm based on the extended RELAX method is proposed to estimate the parameters of chirp signals.
该文采用上述情形的多普勒频率的分段一阶近似模型，在此基础上，提出一种基于推广RELAX算法的线性调频信号参量估计方法。
A new thought of combining frequency estimate method based on FFT with that based on multiple signal classification (MUSIC) is presented.
提出了将基于FFT的频率估计法和基于多重信号分类(MUSIC)的频率估计法相结合的新思路。
In the paper, the method to estimate instantaneous frequency of AM-FM signals using the peak of the WVD and its performances are studied.
该文研究了应用WVD谱峰检测估计AM - FM信号的瞬时频率的方法及其性能。
First using sample estimate method to find the search keywords, and then analyzing the words 'frequency in the sample set to get the formula of the sample frequency.
采用样本估计的方法产生候选关键词，并对样本词频进行了进一步的分析，得出了样本词频公式。
The methods to estimate the carrier frequency of MPSK signals are researched.
研究了MPSK信号载波频率的估计方法，采用三种算法进行载频估计。
The dual-frequency carrier phase observation equation is built and ionosphere-free predigested, the estimate formula of zenith wet delay is deduced with least square method.
建立了双频载波相位观测模型，并将其进行无电离层延迟化简，用最小二乘原理推导了天顶湿延迟的估值公式。
If yes, may we know the frequency that you estimate?
如是，可以让我们知道频率大约为和吗？
In communication systems, the synchronization of the receiver requires to accurately estimate a number of parameters such as the carrier frequency and phase offset.
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。
We also estimate the activated entropy and the reaction frequency factor by using RRKM theory.
根据RRKM单分子反应理论，得到了相应的频率因子和活化熵值。
Then we detect and estimate the carrier frequency of negative SNR DS-SS Signal have done. Theoretic analysis and simulation prove the validity of the arithmetic.
理论分析和仿真实验证明，在负信噪比条件下该方法可有效提高对DS-SS信号载波的检测能力。
The support vector clustering(SVC)algorithm was introduced to detect linear modulation frequency(LFM) signal and estimate its parameter.
文中引入支持向量聚类（SVC）算法对多分量LFM信号进行检测和参数估计。
The algorithm analyzes the system in the frequency domain, then simplifies the finite-impulse-response channel estimate into several memoryless systems.
该算法从频域角度出发，从而将有限冲击响应信道的识别简化为一系列的无记忆系统识别问题。
The results indicate that it is more accurate to estimate joint frequency by using probability matrixes than frequency matrixes.
结果表明，在计算联合频率中应用风向和风速概率矩阵比应用频率矩阵更准确、可靠。
Therefore, it is of primary importance to accurately estimate this frequency offset and compensate for it prior to performing detection. This is the task of frequency synchronization.
由此可见，在检测之前对频偏进行准确的估计和有效的补偿是非常重要的，这便是频率同步所要完成的任务。
After posterior mean is exploited as Bayesian estimate, loss frequency distribution and severity distribution are gotten.
将后验均值作为贝叶斯估计值后，便得到损失频度与强度分布。
After posterior mean is exploited as fuzzy point estimate, loss frequency distribution and severity distribution are gotten.
取后验均值作为模糊点估计值后，便得到损失频度与强度分布。
After posterior mean is exploited as fuzzy point estimate, loss frequency distribution and severity distribution are gotten.
取后验均值作为模糊点估计值后，便得到损失频度与强度分布。
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