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估计精度     
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  estimation accuracy
    Novel technology for improving estimation accuracy of the azimuth misalignment angle in SINS initial alignment
    提高SINS初始对准方位失准角估计精度的方法
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    The Estimation Accuracy of Joint Spectrum in Polarizational and Spatial Domains
    极化域-空域联合谱估计精度研究
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    The estimation accuracy of
    估计精度; 克拉美一劳限;
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    The estimation accuracy of the algorithm is analyzed with respective to different transmission forms of signals, i.e., instantaneous mixture and convolutive mixture, and different signal-noise-ratio.
    分析了算法在不同信号传递 (瞬时混合和卷积混合 )形式、不同信噪比下的估计精度
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    It's proved by theory and emulation that this spectrum estimation method has a better frequency resolution and a higher estimation accuracy than that of FFT under the condition of short data signal.
    理论和仿真结果都证明 ,在短数据信号情况下 ,这种谱估计方法其频率分辨率和估计精度都要高于 FF T方法 .
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  estimation precision
    For the autocorrelation and power spectrum based methods, the results of thechannel estimation will have an impact on the estimation precision, while for the levelcrossing rate based methods, it falls to estimate the maximum Doppler frequency when thechannel condition is hostile.
    在以往的研究中,多普勒频移估计多是采用自相关法、电平交叉率法和功率谱法等实现:其中自相关法和功率谱法往往需要利用信道估计结果,因此其估计精度受信道估计结果影响较大,而且功率谱法不能直接应用于多径信道;
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    This paper studies the PWE-PGA algorithm and presents a method for estimating the flight path by using it,analyzes the factors which effect on estimation precision.
    文中对此算法进行了深入研究 ,提出了一种利用PWE PGA算法进行条带SAR载机航迹估计的方法 ,并对影响估计精度的因素进行了深入的分析
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    The method estimates carrier frequency from the signal's instantaneous frequency, and improves the estimation precision by decreasing the wave and impulse of the signal's instantaneous frequency through detecting signal's better segments and median filtering.
    该方法利用信号的瞬时频率来估计载波频率,并通过定位非微弱信号段和中值滤波有效地抑制了噪声和调制引起的瞬时频率的波动和冲激,来提高估计精度
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    According to the similarity of working principles of Elman network and non-linear ARMA model, Elman network is utilized to be an error estimator to compensate the estimation precision of Kalman filter.
    根据Elman网络与非线性ARMA模型工作原理的相似性,利用Elman网络做误差估计器,补偿卡尔曼滤波器的估计精度
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    The simulation results show that using classical ESPRIT to estimate carrier frequency offset is feasible and efficient,for example,with TLSESPRIT it has better estimation precision than ESPRIT-LIKE.
    然后尝试使用了一种经典ESPRIT算法(TLS-ESPRIT)估计载波频率偏移,仿真结果表明使用该方法比类ESPRIT算法具有更高的估计精度,证明了使用经典ESPRIT方法估计载波频率偏移的可行性与有效性。
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  estimating accuracy
    On the basis of it, the ML algorithms amending scheme of Schmidle&cox algorithms and the classic MUSIC algorithms were researched and simulated in MATLAB environment. Following is the conclusions: the maximum likelihood algorithm based on the CP using the CP to estimate timing offset and frequency offset. So the estimating accuracy is high and computing amounts is low;
    在此基础上对基于循环前缀的最大似然估计同步算法(ML)、Schmidle&cox算法改进方案、类MUSIC算法进行了研究并在MATLAB环境下做出仿真,得出以下结论:基于循环前缀的最大似然估计算法利用循环前缀进行定时和频偏估计,其估计精度高,算法运算量小,但受循环前缀影响大,只能估计出1/2子载波频偏;
短句来源
    Compared to the WK's method, this improved one can be used to estimate the number of coherent sources and to raise estimating accuracy in case of high correlation, small-angle-separation or low SNR.
    与WK′s方法相比,这种改进的算法可以估计相干源的数目,而且能提高信号源强相关、小分离角及低信噪比情况时估计源数目的准确程度。 为了进一步提高估计精度,我们还提出了乘幂的空间平滑——信息论判阶法。
短句来源
    amending scheme of Schmidle&cox algorithms employed a training sequence to estimate timing offset and frequency offset. The estimating accuracy is high and frequency estimating range is wide but the added training sequence lower the system transmission efficiency .
    Schmidle&cox算法改进方案利用一个训练序列进行同步估计,有较高估计精度,频偏估计范围大,但训练序列的加入降低了系统传输效率;
短句来源
    The theoretical analysis and computer simulation show thatthe estimating accuracy,the converting speed and the calculating complexity of this method areall superior to those of LMS adaptive time delay estimation.
    理论分析和计算机仿真表明:这种方法在估计精度、收敛速度和计算复杂度诸方面均优于基本LMS自适应时间延迟估计。
短句来源
    Based on the problem of inferior estimating accuracy of the desired signal array response vector for small spreading gain and multiple users in CDMA, by constructing a new sequence with the despread data and the symbols received by the base station, it proposes a new algorithm of estimating beamforming weights of the desired user.
    针对 CDMA系统中扩频增益较小和用户数较多时信号阵列响应估计精度较差的问题 ,提出了利用基站收到的码元序列与解扩后的接收序列通过加窗构造新序列来进行波束权值估计的新方法。
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  precision of estimation
    And we test & verify their validity by analyzing the performance of detection & precision of estimation, thus demonstrating that the thought of bimodal noise is practicable.
    并从检测性能和估计精度的角度验证了其有效性,从而说明双模噪声思想是一种实用的想法。
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    The solution of LS is obtained by minimizing variance of estimation errors. LS methods have advantages of smaller mount of calculation and higher precision of estimation.
    最小二乘方法的准则是使估计误差的方差最小,具有实现简单,估计精度较高等优点。
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    It is shown that the precision of estimation,the ability of resisting interferences,the speed of convergence and the calculating complexity of the method are all superior to those of LMS adaptive time delay estimation.
    理论和实践表明:这种方法在估计精度,抗干扰能力,收敛速度和计算复杂度四个方面均优于LMS自适应时延估计。
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    The analysis and simulation demonstrate that the algorithm not only furnishes some degree of resistance to the near-far effect, but also gives an evident enhancement to the performance and precision of estimation in DOA under low SNR.
    理论分析与仿真实验表明 ,该方法具有一定抗远近效应的能力 ,且在低信噪比下对系统性能及角度估计精度均有较大程度的提高。
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  estimation accuracy
The throughput of LANs with the DCF mechanism under high load and in noise is evaluated by an analytical method, which ensures high estimation accuracy for any values of protocol parameters and bit error rates.
      
Convergence is demonstrated, convergence rate is estimated, and parameter estimation accuracy is derived.
      
A randomized stochastic optimization algorithm: Its estimation accuracy
      
In the construction of the estimate, we use the sequential analysis approach, which involves a special choice of the observation termination instant, depending on the estimation accuracy.
      
Singularity (i.e., very poor estimation accuracy) occurs in this problem if objects are very close to each other.
      
更多          
  estimation precision
Simulation results show that this new method has some special features, such as higher estimation precision, lower amount of calculation, higher fitting effect even in lower signal-to-noise ratio (SNR) situation.
      
Finally, an analysis of factors influencing estimation precision is given.
      
Simulation studies indicate that the QTL position and effect can be estimated using our model, but the estimation precision can be improved from the higher- over lower-order approximation when the sample size used and gene effects are small.
      
The results suggest that KOlog can improve estimation precision compared with KO for lognormally distributed data.
      
The experimental results indicate that the estimation precision of the satellite-plus-receiver instrumental bias is of the order of ±0.17 nsec.
      
更多          
  estimating accuracy
Estimating Accuracy of Mom Solutions On Arbitrary Triangulated 3-D Geometries Based On Examination of Boundary Conditions Perfor
      
A new error metric is applied for estimating accuracy of MoM solutions on purely 3-D geometries using triangle doublet basis functions.
      
Further, BCP error metric is examined for estimating accuracy of the scattering problem solution on open cube geometry, and to find the correlation of BCP error with that for near-field characteristics.
      
In this paper, we review some existing formulas for lower confidence bounds that can be used to determine the sample size required for a given estimating accuracy ratio.
      
These materials, rich in uranium, are available as reference materials, for estimating accuracy in the analysis of vegetation, from the Canadian Certified Reference Materials Project in Ottawa, Canada.
      
更多          
  precision of estimation
The L-shaped uniform array of expend aperture is used to improve the precision of estimation, and the method of solving the ambiguity of angle under the condition of coherent signals is presented.
      
This paper considers estimation of a exponential mean time to failure using a loss function that reflects both goodness of fit and precision of estimation.
      
Precision of estimation, reflected in mean squared error (MSE), proved to be insensitive to this choice.
      
The effect of number of categories in rating scales on precision of estimation of scale values
      
On the accuracy and precision of estimation of the activation energy of non-isothermal decomposition of a solid
      
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