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幅度最大
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  amplitude maximum
    In the algorithm,the spectrum envelope entropy minimizing criterion was applied to estimate the chirp rate to overcome the parameter estimation difficulty under the amplitude maximum criterion.
    该算法采用解线调处理谱包络最小Shannon熵准则进行参数估计,可解决在常规的幅度最大准则下参数估计性能恶化的问题。
短句来源
    To resolve this problem, a range profile compensation algorithm based on the modified discrete Chirp-Fourier transform is proposed. In the algorithm, the spectrum envelope entropy minimizing criterion is applied for Chirp rate estimation to overcome the parameter estimation difficulty under amplitude maximum criterion.
    为此,提出了一种基于修正离散Chirp Fourier变换(MDCFT)的高速运动目标距离像补偿算法,采用MDCFT谱包络最小Shannon熵准则进行参数估计,可解决幅度最大准则下参数估计性能恶化的问题。
短句来源
    In this algorithm, the spectrum envelope entropy minimizing criterion is applied for chirp rate estimation to overcome the difficulty of parameter estimation under the amplitude maximum criterion.
    该算法采用DMFT谱包络最小Shannon熵准则进行参数估计 ,可解决幅度最大准则下参数估计性能恶化的问题。
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  “幅度最大”译为未确定词的双语例句
    When estimating frequency with the FFT, the resolution and accuracy are limited by the observation time of the signal, i.e., A/ = \IT.
    差拍信号的FFT幅度最大处的相位随距离变化,因此可以利用FFT相位在一个频率(距离)分辨单元范围内估计差拍信号的频率(距离)的位置,从而提高频率(距离)估计精度。
短句来源
    Based upon the signal model and the multipath channel model of CDMA, the maximum weighted amplitude of each user at each sector is estimated by using Maximum Likelihood estimation method. By comparing the maximum weighted amplitudes of all sectors, the sector of the mainpath of each user is localized and the weight of downlink signal for each user is obtained.
    根据CDMA信号模型和多径信道模型,用最大似然(ML)法估计得到每个用户在每个扇区内加权幅度最大的路径,通过比较这些加权幅度的大小,确定用户的最强路径(主径)所在的扇区,得到下行信号的加权道;
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  amplitude maximum
In the Northern Hemisphere, the oscillation amplitude maximum was observed at higher latitudes than in the Southern Hemisphere.
      
The presence of a velocity amplitude maximum in the wall zone near the open end is detected.
      
a phase-reversed θ rhythm in layers II-I with an amplitude maximum in the outer half of layer I.
      
The CM amplitude maximum and the OAE are most severely masked by simultaneous exposure to tones within the range from about 61-62 kHz up to about 70 kHz.
      
There is a marked amplitude maximum in October and also a considerable phase variation with season.
      
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An approach for signal amplitude estimating with under-sampling rate is presented. It

本文在加性白噪声条件下提出了估计信号幅度的欠采样方法,并给出了幅度最大似然估计的算法,仿真结果表明,估计值与真实值间的偏差很小。欠采样方法降低了对硬件设备的要求,易于实时处理。该方法可实现高频段信号幅度的在线检测。

A new efficient propagation delay estimator is proposed, which is an extension of the Maximum Likelihood estimator based on the algorithm of CLEAN and RELAX, and decomposes a multidimensional optimization problem into multiple one dimension optimizations. The estimator is shown to be robust against the near far problem and it is also compared with several other code timing estimators via numerical examples. The estimator can offer noticeable performance improvement over the conventional sliding correlator....

A new efficient propagation delay estimator is proposed, which is an extension of the Maximum Likelihood estimator based on the algorithm of CLEAN and RELAX, and decomposes a multidimensional optimization problem into multiple one dimension optimizations. The estimator is shown to be robust against the near far problem and it is also compared with several other code timing estimators via numerical examples. The estimator can offer noticeable performance improvement over the conventional sliding correlator.

使用最大似然 (ML)估计 ,采用CLEAN和RELAX算法的估计思想 ,把多维优化问题转化为多个一维优化问题 ,实现了慢衰落多径传输环境下DS CDMA信号的时延和幅度的最大似然估计 .仿真结果表明 :该算法可有效估计多径信号的幅度和传输时延 ,对远近效应稳健 ,其性能接近Cramer Rao界 (CRB) ,较传统的滑动相关器估计方法有明显提高 .

The range measurement of the FMCW radar is based on the estimation of the frequency of the beat-note signal. The rough estimation of the frequency can be made from the location of the maximum value of the DFT amplitude of the beat-note signal. To improve the range measurement accuracy a range estimation method for FMCW level radar based on the phase of the FFT of the beat-note signal is presented. The ambiguity in the phase measurement is eliminated by the phase difference of two segmented FFTs. Formula for...

The range measurement of the FMCW radar is based on the estimation of the frequency of the beat-note signal. The rough estimation of the frequency can be made from the location of the maximum value of the DFT amplitude of the beat-note signal. To improve the range measurement accuracy a range estimation method for FMCW level radar based on the phase of the FFT of the beat-note signal is presented. The ambiguity in the phase measurement is eliminated by the phase difference of two segmented FFTs. Formula for evaluating the rmse(root mean square error) of range estimation is given, which fitted well with computer simulation results.

FMCW物位测量雷达通过差拍信号的频率测量距离 ,根据差拍信号DFT幅度最大值的位置可以粗测距离 .为了提高FMCW雷达的距离测量精度 ,提出了一种基于差拍信号相位的距离估计方法 .对差拍信号分两段进行FFT ,并利用两段信号的FFT在幅度最大值处的相位差消除相位测量中出现的整周模糊 .导出了距离估计均方根误差的计算公式 ,进行了仿真试验 ,试验结果与给出的公式计算结果相吻合

 
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