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- wavelet spectra estimation 小波能谱估计
- The improvement of the accuracy of the wavelet based evolutionary spectrum estimation is discussed, which is based on the original work of Priestley. 在Priestley提出的基于小波分析进化谱理论基础上 ;对改进进化谱估计的性能进行了研究 .
- LFM signal detection and parameter estimation is deduced.At last, wavelet transform of LFM signal is presented, and LFM signal detection based on wavelet spectrum is studied. 线性调频信号的检测与参数估计是一个广泛受到关注的问题,分析了线调频信号的小波变换,并提出了基于小波谱的线性调频信号检测的算法。
- As one high order spectrum estimation, bispectrum estimation is widely used. 双谱估计是一种应用广泛的高阶谱估计。
- Secondly, extract seismic wavelet from borehole side seismic trace by cestrum method to get wavelet spectrum in frequency domain. (2)对时间域的井旁道记录利用同态反褶积方法提取地震子波，得到频率域的子波谱；
- Liu, Y., Z.Yu, and S.Jiang, 1990: Cospectrum and quadrature spectrum estimation by the maximum entropy method. 周良明、刘玉光，2003：利用地物光谱仪数据研究水汽对太阳辐射的吸收。
- Gauss linear frequency modulation wavelet is selected as base function to study wavelet spectrum, and its smoothed spectrum in time and frequency domain. 在前人工作的基础上,选用了高斯线调频小波作为基函数,研究了信号的小波谱,给出了小波谱在时间域及频率域的平滑谱并与傅里叶谱进行了比较。
- This paper is an application research on the algorithm of Bayesian spectrum estimation. 本课题是对贝叶斯频谱估计算法的应用性研究。
- Since DFT can he calculated via its fast algorithm FFT, the compulation is less than the conventional spatial spectrum estimation algorithm. 由于离散傅里叶变换可以用其快速算法FFT进行计算;较之传统的空间谱估计而言;计算量有很大地减少.
- To demodulate GMSK signal,DSP is used in receiver to achieve error spectrum estimation,bit synchronization recovery and decode. 为了实现GMSK信号解调，接收机中DSP实现了调制信号的误差频谱估计、位同步恢复及译码。
- A phase detection method based on the Bayesian spectrum estimation is proposed for improving the accuracy of traditional phase analysis method in this paper. 摘要针对传统的相移分析方法误差大的问题，通过合理的选取信号模型，采用贝叶斯频谱估计算法对实验中输入输出信号进行了相位识别。
- Objective To improve the estimation and the percentage of electrogastrogram(EGG)slow wave rhythm with power spectrum estimation and calculation rule set. 目的从功率谱估计和计算规则两方面对胃电慢波节律百分比的计算方法进行改进。
- In addition, the key algorithm of the classic periodogram spectrum estimation has been improved with split-radix algorithm that can shorten the time of program executing. 另外，采用分裂基算法对经典的周期图谱估计的关键算法进行了改进，可缩短程序运行时间。
- The application of Bartlett and Capon spatial spectra estimation methods is expanded to vector sensor array. Expressions of the spatial spectra based on acoustic vector sensor array are derived. 研究了两种典型的空间谱估计方法在水声矢量传感器阵列定向中的应用;推导了空间谱的解析表达式.
- wavelet spectrum distortion measure(WSDM) 小波谱失真测度
- The feature of radiated noise line spectra of underwater moving-target was extracted by the united spectra estimation method based on the traditional and modern spectra estimation. 基于经典谱与现代谱估计的联合估计法提取水下目标辐射噪声线谱特征,首先分别估计采集数据的功率谱,得到估算功率谱图;
- In the calculation of STFT, discrete Fourier transform (DFT) is replaced by autoregressive (AR) spectrum estimation, and a new method based on AR spectrum estimation is gained, namely short-time AR spectrum analysis. 通过对传统的短时Fourier变换进行改造;在短时Fourier变换的计算中利用自回归(AR)谱估计代替离散Fourier变换(DFT);得到了一种基于AR谱估计的短时AR谱分析方法.
- Missile acceleration dominates echo Doppler spectrum broadening, hereby a single/multiple target discrimination method using the super?resolution spectrum estimation after signal de?chirping is put forward. 导弹加速度对目标回波多普勒频谱展宽起主要作用,据此提出了去斜率后进行超分辨谱估计的单/多目标鉴别方法;
- Alternating notch periodogram algorithm (ACPA) based on maximum likelihood (ML) can regarded as a complete solution to the discrete spectrum estimation problem since it achieves superresolution, very high accuracy, and low SNR threshold. 基于最大似然法的交替陷波周期图算法（ANPA）是一种超分辨率的谱估计算法，它同时具有超分辨率、高精度和低信噪比门限的特性。
- We develop an auto-modulated scheme of a crucial parameter calculation by a noise spectrum estimation to ameliorate the issue of parameter setting in conventional adaptive threshold schemes. 本文针对传统语音活动侦测演算法中，需预先决定门槛值的方法作改良，并利用杂讯频谱自动计算于门槛值估测中所需之关键参数，改良过去演算法设定参数之方法。
