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- error of frequency domain 频域误差
- Results Hospital time series in the context of frequency domain analysis, the number of people hosp... 结论利用谱分析能准确地提取周期信息,这对于时间序列数据的进一步处理有着重要的意义。
- Finally, some simulations using spaceborne spotlight SAR parameters testified the advantages of frequency domain polar format algorithm. 最后利用星载聚束SAR参数进行仿真,证实了该算法较时域极坐标算法的优势。
- This paper analyzes the cause of the error of attitude algorithm of SINS in frequence domain, and computes the error under the classic conic motion. 摘要从频域角度分析了捷联惯导系统在姿态解算过程中误差产生的原因,并在典型圈锥运动情况下进行了定量计算。
- Ni AS, Wang JQ, Yang GS, et al.Noncontact lifeparameters signal detecting of frequency domain signal integration based on FFT [J]. 倪安胜,王健琪,杨国胜,等.;基于FFT频域积累的非接触生命参数信号检测[J]
- Meanwhile, data of complete time domain waveform is needed in order to calculate accurate S-parameters of frequency domain via fast Fourier transform (FFT). 而要通过快速傅立叶变换(FFT)获得准确的频域参数,又必须得到完整的时域波形数据。
- For the sake of predicting the detection effect of differential operators,the frequency features of common operators are analyzed from the view point of frequency domain. 为了预测微分算子边缘提取能达到的效果,从频域角度出发,分析了边缘检测中常用微分算子的频谱特性。
- Along with the increase of frequency, the meter measure error add, and the error of induction watt-hour meter relate to harmonics times and harmonics power. 感应式电能表随着频率的增加,计量误差加大,具有下降式的频率特性; 感应式电能表的计量误差与谐波次数的高低、谐波功率的大小、谐波功率的方向有关;
- Doe to the use of frequency domain symbol division, it decouples the estimation of impulse response for each receive antenna branch, hence releases the computational burden. 由于采用频域相除抵消技术,各分支的信道参数可分离估计,因此降低了计算复杂度。
- Based on the theoretical analysis a new method of frequency domain analysis by the wavelet analysis to objectively measure pilling intensity in sample images is proposed. 提出了基于小波分析的织物起球客观评级新方法,利用对两个系列的起球织物标准样照图像的小波分析,对此新方法进行了系统研究;
- This article expounded the measurement and error.It analyzed and discussed the measurement error of frequency in standing wave method both theory and practice. 阐述测量及误差,从理论计算和实际测量两方面对驻波法测量频率产生的误差进行分析讨论。
- Then the emphasis is put on SC/FDE,followed by an analysis of its main principle,its algorithms of frequency domain equalization and channel estimation. 最后利用所给出的算法进行简单的SC/FDE系统仿真。
- The three-dimensional phonocardiogram after wavelet analyzing could describe all the information of frequency domain,time domain and amplitude domain perfectly. 对提取的时频参数进行分析,各组间存在显著性差异。
- The requirement and reason of frequency domain criteria for handling qualities of pitch axis are briefly presented in the flying qualities MIL STD 1797A in this paper. 简要介绍了军用飞机飞行品质MIL-STD-1797A中有关俯仰轴频域准则的要求和原由。
- The conclusions are (1) The scale factor of frequency between large and small perspex model test accord with similitude law basically. The error of primary frequency is 2.7% or 4.1%, the error of the second frequency is 0 or 6.05%. 得到了以下结论:(1)大小模型频率符合相似律;一阶频率误差为2.;7%25、4
- A unit of frequency equal to one cycle per second. 赫兹频率的单位,等于每秒一周
- This paper analyzed the generation structure of DDFM signal, got the expression in time domain, then applies the modified Bessel function of first kind, then got the analytical expression of frequency spectrum based convolution in frequency domain. 本文分析了DDFM信号的发生结构,求得其时域解析式,进而引入一阶变质Bessel函数,最后通过频谱卷积的方法求得了DDFM的频谱解析式。
- He has made serious errors of judgement. 他在判断上犯有严重错误。
- Based on the frequency domain feature, energy eigenvector of frequency domain is presented using wavelet packet analysis method, and the way of best tree is used to choose symptom. 用转子振动试验台模拟了汽轮机典型故障,根据其频域变化特性,采用小波包分析对其建立频域能量特征向量,并根据最佳分解树进行了特征选择。
- Thus he committed the error of"left" opportunism. 就这样他犯了“左”倾机会主义的错误。