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自相关计算
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  “自相关计算”译为未确定词的双语例句
     The content involves Digital Filter, Auto Correlation, Cross Correlation, mean and standard deviation, probability density and probability distribution statistic, as well as Auto Power Spectrum based on Fast Flourier Transfer, Correct Power Spectrum, Cestrum and Frequency Response.
     具体内容包括:数字滤波、时域加窗、自相关计算与互相关处理、均值和方差计算、概率密度和概率分布统计,快速傅立叶变换(FFT)基础上的自功率谱、互功率谱、频率响应函数、相关函数、倒频谱分析;
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     In the novel symbol timing algorithm, only one pilot is used for the symbol timing recovery. Hence the algorithm is suitable for the burst OFDM symbol. The frame and symbol can be synchronized simultaneously, which can decrease the complexity of synchronization.
     提出的算法仅利用一个导音符号来进行符号定时恢复 ,适合与突发模式的正交频分多路( OFDM)信号 ,而且 OFDM帧同步和符号同步能一次完成 ,简化同步实现的复杂度 ,算法采用自相关计算 ,对载波频率偏移具有较强的鲁棒性 .
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     The method has been successfully applied to the DSP-based ultrasonic Doppler fetal heart rate monitoring system designed by ourselves.
     该方法只进行与胎儿心率对应的自相关计算,从抽样自相关结果中找出最大值以确定胎儿的心率,并且已成功地将其应用于自行设计的基于DSP的超声多普勒胎儿监护系统中。
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  相似匹配句对
     We also give a new correction factor to simplify the calculation of the Unstatistic.
     的计算
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     A Fast Calculation Method of an Autocorrelation Function of Combined Codes
     组合码自相关函数的快速计算
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     The self - correlation coefficient and cross-correlation coefficient are also calculated.
     计算自相关系数和互相关系数;
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     CALCULATION OF CAPACITANCE
     电容的计算
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     SPECTRUM AUTOCORRELATION
     谱自相关
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In the novel symbol timing algorithm, only one pilot is used for the symbol timing recovery. Hence the algorithm is suitable for the burst OFDM symbol. The frame and symbol can be synchronized simultaneously, which can decrease the complexity of synchronization. By using an autocorrelation, the proposed algorithm is robust against the carrier frequency offsets. The simulation shows that the proposed method can quickly and exactly implement the symbol synchronization even in a frequency selective fading channel....

In the novel symbol timing algorithm, only one pilot is used for the symbol timing recovery. Hence the algorithm is suitable for the burst OFDM symbol. The frame and symbol can be synchronized simultaneously, which can decrease the complexity of synchronization. By using an autocorrelation, the proposed algorithm is robust against the carrier frequency offsets. The simulation shows that the proposed method can quickly and exactly implement the symbol synchronization even in a frequency selective fading channel.

提出的算法仅利用一个导音符号来进行符号定时恢复 ,适合与突发模式的正交频分多路( OFDM)信号 ,而且 OFDM帧同步和符号同步能一次完成 ,简化同步实现的复杂度 ,算法采用自相关计算 ,对载波频率偏移具有较强的鲁棒性 .仿真结果表明 ,即使在频率选择性衰落信道中 ,提出的算法也能快速地实现符号定时同步

A pitch detection method based on periodic energy is proposed after devoting a research on the phenomenon of speech signal energy varying periodically.A long-duration analysis window is introduced to compute reference energy and a short-duration analysis window is used to show the instant energy.Instant Energy Measure(IEM)is computed from these two frame signal.Fundamental frequency is obtained after autocorrelation is used on the IEM series.The experimental analysis show s the performance is very satisfactory...

A pitch detection method based on periodic energy is proposed after devoting a research on the phenomenon of speech signal energy varying periodically.A long-duration analysis window is introduced to compute reference energy and a short-duration analysis window is used to show the instant energy.Instant Energy Measure(IEM)is computed from these two frame signal.Fundamental frequency is obtained after autocorrelation is used on the IEM series.The experimental analysis show s the performance is very satisfactory for pitch extraction and unvoiced/voiced decision with this method under the general background noise.

文章对语音信号的能量呈现周期性变化的现象进行了研究,提出了一种基于周期能量变化的基音检测方法。采用一个长帧语音信号平均能量作为基准参考能量,用一个短帧语音信号平均能量来表示瞬时能量。由二者可算出瞬时能量测度(InstantEnergyMeasure,IEM)序列。对瞬时能量测度序列进行自相关计算后,得到基音周期。实验分析表明,该方法在干净和噪声环境下,基音周期提取和清浊判决具有令人满意的效果。

Based on the data of grassland investigation in 1981 and grassland distribution calculated from TM remote sensing image by means of GIS technology in 2000, the spatial and temporal dynamic of in MinXians grassland is monitored. Contrasting the grassland of 1981 with one of 2000, the spatial feature of degradation would be researched in the paper. To most spatial analysts, IMoran' is probably a known measure to test spatial autocorrelation, and the Z-value of IMoran' indicates positive spatial autocorrelation....

Based on the data of grassland investigation in 1981 and grassland distribution calculated from TM remote sensing image by means of GIS technology in 2000, the spatial and temporal dynamic of in MinXians grassland is monitored. Contrasting the grassland of 1981 with one of 2000, the spatial feature of degradation would be researched in the paper. To most spatial analysts, IMoran' is probably a known measure to test spatial autocorrelation, and the Z-value of IMoran' indicates positive spatial autocorrelation. The results of IMoran' and Z(Gi*) and the moving plots all shows that the center of grassland degradation is the XiJiang village which is at the northwest of MinXian. From 1981 to 2000, the quantities of grasslands in the east are more than in the west, and the qualities of grasslands in the south are better than in the north. And the spatial structure of grassland is more obviously than before in the MinXian. It shows that the grassland is centralized degenerated in the northwest and middle of the MinXian, but the grassland of the some villages would be increasing in the east. It is caused by the lagging of the economic and technology. In other words, little money and poor technology are used in the area. So the area is weak to the disturbance from the environments.

本文运用遥感手段,对2000年6月份的TM影像解译得到岷县草场资源分布图,对比分析1981年的岷县草场资源分布,对岷县草场退化的时空特征进行研究。经过IMoran'的全局空间自相关计算、局域空间自相关计算—G*统计的)(*iGZ值的计算,发现岷县的草场退化重心位于县域的西北部;20年来草场资源一直呈现东多西少、南好北差之势,并且这种空间格局愈加明显。表现为县域的西北部和中部的草场呈现大面积的集中退化的趋势,而东部的几个乡镇的草场面积还有增加的现象。说明县域的西北部和中部的科技水平以及草场保护投入的资金相对不足,抗干扰能力差。

 
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