periodogram
英
美
网络 直接法; 周期图; 周期图法; 周期性解析法; 周期圖
复数：periodograms
双语例句
- Invariance Principle for the Functional of Periodogram of a Stationary Time Series; Depositon is usually episodic rather than smoothly continuous.
平稳序列周期图积分泛函的不变原理沉积作用通常是周期性的而不是平稳连续的。 - The major periods in first four principal components series are also revealed by using the periodogram and the maximum entropy method.
在这四个主成分序列中的决定性周期用周期图和最大熵方法加以揭露。 - This algorithm applies periodogram and parabolic interpolation to the cross correlation spectrum of band limited stochastic signals, and can obtain a continuous time delay estimator.
该方法将周期图法与抛物线插值应用于带限随机信号的互相关谱，可以获得连续的延时估计。 - LFMCW radar nonlinear residual frequency errors zero crossing detection periodogram.
标签LFMCW雷达非线性剩余频差过零检测周期图。 - In this paper, Power spectrum of CAP ( carotid pulse) by periodogram and AR model is given, respectively.
采用周期图法和AR参数模型法分别对颈动脉搏动波进行了功率谱分析。 - In this paper, seismic period sequence of northeast china is dealt with by the periodogram, maximun entropy analysis and Fisher.
利用周期图，最大熵谱分析及最优分割方法，对东北地区地震活动的时间序列进行了分析处理。 - A simple algorithm for frequency offset estimation is proposed, which estimates the frequency offset with the periodogram and the correlation function of the observation samples.
提出了一种频差估计的新算法，该算法结合观测序列的周期图和自相关函数进行频率估值。 - Method Improved periodogram ( Welch procedure), AR model and Wavelet transform techniques were used to detect the Spontaneous otoacoustic emissions signal.
方法采用改进的周期图法、AR模型及小波变换方法，研究自发耳声发射信号的检测算法。 - In chapter four, selects periodogram realizes the power spectrum analysis, take advantage of Radix-4 algorithm to calculate FFT, and describes the realization in MCU.
第四章选择周期图法实现功率谱分析，采用优化了的基4算法实现快速傅里叶变换，并阐述了在单片机上的实现。 - Based on time domain analysis and periodogram power spectrum estimation of loose parts impact signals and complicate background noise in nuclear power plant time-frequency alarm method is proposed of loose parts impact signals in nuclear power plant in this paper.
在对核电站中跌落零件冲击信号和复杂背景噪声进行时域分析和周围图法功率谱估计的基础上，提出了跌落零件时频综合报警方法。 - Method In addition, the method of periodogram is introduced. In addition, M.
此外，还介绍了周期图方法进行功率信号的谱密度估值。 - In this paper, based on the theory of second order cyclostationary, two methods of cyclic periodogram are introduced and explained.
本文在介绍了二阶循环平稳理论的基础上，分析了循环周期图的两种方法，并将时间平滑循环周期图法应用到实测滚动轴承振动信号的分析与诊断之中。 - A Frequency Offset Estimator Based on Periodogram and Correlation Function
基于周期图和自相关函数的频偏估计方法 - In this paper the midium and short periodic fluctuations of meteorological components related to crop yield in China are discussed by means of spectrum analysis, periodogram and variance analysis.
本文应用功率谱、周期图和方差分析等方法探讨了全国及部分代表省（区）粮食单产中气象分量的中短周期波动。 - Genetic Programming ( abbreviated as GP) method was studied subsequently. The power spectral density of gearbox vibration signals is estimated by the periodogram from which original feature sets are derived.
本文接着研究了遗传编程技术。为解决该问题，提出了利用频域特征和遗传编程对齿轮箱盖多类状态振动信号进行特征提取的方法。 - The maximum entropy analysis and the periodogram analysis are made for the temporal variations of the A ( b) indexes.
求出本世纪各年Ⅰ，Ⅱ，Ⅲ三带的地震活动性指数A（b），并对A（b）指数随时间的变化作了最大熵谱分析和周期图分析。 - Conclusion Clinical application of the Spontaneous Otoacoustic Emissions might be enhanced by the method of improved periodogram ( Welch procedure) and Wavelet transform.
结论改进的周期图法和小波变换方法对推动自发耳声发射在临床生理和病理上的应用有巨大的潜力。 - This paper investigates the possibility of determining Q by periodogram and AR spectral analysis with the aid of synthetic series. It also tests the function of estimating eigenfrequency and Q by AR spectral analysis with complex coefficients.
本文用合成序列考察了周期图和AR谱分析估计Chandler摆动Q值的可行性，同时试验了复系数AR谱检测本征频率及估计Q值的能力。 - Study of the Underwater Telecontrol Sound Detected by Spectral Estimation with Periodogram
周期图法对远程遥控水声信号的谱估计检测研究 - In this paper, we analyzed evolutionary spectrum of chirp signals of time-varying amplitude, and proposed the method of concentrating energy in time-frequency domain to improve the concentration of evolutionary periodogram.
本文研究了时变幅度Chirp信号的演化谱，提出了分别在时间轴和频率轴上聚集能量的方法，改善了演化周期谱的能量聚集性。 - In this paper, an improved periodogram analysis proposed by Welch is used to estimate power spectrum of ship's magnetic signals, and some normalized characteristic curves are given.
本文采用修正的周期图法（Welch法）对舰船磁场信号进行了功率谱估计并给出归一化曲线。 - The simulation results show that the results are much better than traditional periodogram method.
仿真结果表明用现代谱分析法得到的结果远远好于周期图法。 - Many techniques have been proposed for statistically analyzing fMRI data, like statistical parametric mapping, periodogram, multi-taper spectrum estimation, independent component analysis, correlated coefficients methods, and so on.
目前已经有多种用来对功能磁共振成像数据进行统计分析的方法，如统计参数映射（SPM）、周期图法、多窗口谱估计法、独立成分分析（ICA）、相关系数法等等。 - Simulation experiments showed that the method could improve the signal noise ratio of the power spectrum estimation distinctly compared to those estimated by classical periodogram method, and could enhance the noise resistance ability and the precision of MFCV measurement.
仿真实验结果表明，本文的方法与经典周期图估计功率谱谱坑法相比，可以显著改善估计功率谱的信噪比，提高谱坑法的抗噪能力和MFCV检测的精度。 - The power spectrum of the noise and signal are estimated by the average smooth periodogram method.
用平均平滑周期图法分别估算出信号与噪声的功率谱密度函数。 - Applying the basic idea of period frequency analysis in the method of analysing the time series and taking into consideration the features of periodogram samples, the author puts forward a computing method for quick discernment of concealed periods.
文章运用时间序列分析方法中周期频谱分析的基本思想，根据周期图的样本特征，提出了一种快速识别隐含周期的计算方法，并对变形观测中的观测周期确定进行了讨论。 - The periodogram, square law, and spectrum symmetry carrier frequency estimation methods were studied, and the latter two means were improved. Computer simulation shows that the improved algorithms have better anti-noise performance than the original ones.
研究了周期图、平方律以及频谱对称载频估计法，并对后两种方法做了改进，仿真表明本文改进算法具有更好的抗噪性能。 - Multi-taper method is a kind of nonparametric spectrum estimation, in which multiple orthonormal windows are first applied to the received data and then periodogram method is used to estimate the spectrum.
多窗口谱估计是利用一组正交窗加到接收到的数据上，再进行周期图估计的一种非参数谱估计技术。 - The early development of the two principle methods& the frequency domain method and the time domain method of time series is summarized. The background, evolution and application of periodogram method created by Schuster on bases of the theory of Fourier series are discussed in detail.
概括了时间序列分析两大方法&频域分析和时域分析的早期发展，详细考察了Schuster在Fourier级数理论的基础上，创建周期图方法的背景、过程及应用。 - Then we get the power spectrum analysis of modulation signals through periodogram method.
接着采用周期图法对调制信号进行功率谱分析。