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- With flexible definition of fourth order cumulant of the array output signal, the spectral peak searching is not necessary for the new separable approach. 通过巧妙定义阵列输出四阶累积量矩阵,该方法不需要谱峰搜索就可以估计信号二维到达方向。
- Due to using the fourth order cumulants (FOC), the number of signals that can be coped with may be larger than the number of sensors in the array, and our algorithm is insensitive to Gaussian noise. 由于采用了四阶累量，该算法可以估计出比阵元数更多信号的波达方向，并且对高斯噪声不敏感。
- 3 Fourth order cumulant(FOC) different slice-based adaptive dynamic line enhancement algorithms are presented. 3 提出了基于四阶累积量不同切片的间接自适应动态线谱增强算法。
- fourth order cumulants diagonal slice spectra 四阶累积量对角切片谱
- fourth order cumulant 四阶累积量
- The elastic moduli Eijlm represents a tensor of the fourth order. 弹性模数Eijlm表示一个四阶张量。
- Concretely,the fourth order squeezing of the light field iis studied in detail. 我们详细研究了量子光场的四阶压缩特性,给出了四阶压缩的条件。
- Fourth order cumulants 四阶累积量
- The experiment results showed that the 4th order cumulant could reflect the EEG pattern changes of different motor imageries. 在此基础上;进行了基于脑电四阶累积量的左右手运动意识识别和分类研究;实验结果表明;正确识别率能达到87.;5%25。
- The defect has been overcome in this paper,which channel equalization can be not directly applied because the third order cumulant of symmetrically distributed signal is zero. 计算机仿真表明,该算法实现简单,收敛效果好,稳态剩余误差小,其性能优于已有的一些同类算法。
- This paper introduces the higher order cumulant(HOC) and analyzes the theoretical basis on which the cumulant extracts the features of complex coupling signals and non-linearity. 介绍了高阶累积量理论,分析了它提取复杂耦合信号和非线性特性的理论基础。
- The chain consists of a dual-mode,highly linear,fourth order Chebyshev active RC filter and three VGA stages. 基带由双模的高线性度的四阶切比雪夫形式的有源RC低通滤波器以及三级可变增益放大器构成。
- The scattering of time-domain pulse by the ionosphere was calculated using a fourth order (FD)2TD scheme. 采用具有四阶精度的时域有限差分法计算了电离层对时域脉冲的散射，然后应用小波变换求出了反射信号的时频分布。
- The initial boundary value problem of fourth order wave equation with dispersive and dissipative terms is studied. 摘要研究具色散和耗散项的四阶波动方程的初边值问题。
- It reduces the problem of solving double harmonic equation to the problem of solving the fourth order Euler equation by applying transformation. 这种方法是用变换将解重调和方程问题化简为解四阶欧拉方程问题
- It will approach to Gaussian distribution after accumulating sea clutter along with one dimensional range images, which can achieve signal detection in advantage of higher order cumulant and spectra. 经过非相参积累的海杂波沿距离像的分布接近高斯分布，沿距离像计算回波信号的高阶累积量、高阶谱，可以实现目标的检测。
- On those points of fourth order lead which can not receiver the GPS signal, Leica TC1800 was used and achieved precision requirement. 在无法接收GPS信号的四等导线点按照常规方法利用TC1800测量，达到设计精度要求。
- Using 4th order cumulant, the author constructed a spatial signature matrix , and then proved that multi-user’s spatial signature can be obtained through eigen decomposition of the matrix. 作者利用四阶累积量构造了一个空间特征估计矩阵，并证明了对该矩阵作特征分解可以得到各用户的空间特征。
- This paper considers the finite difference method for a class of generalized fourth order dispersive and dissipative wave equation. 摘要研究了一类四阶非线性耗散、色散波动方程初边值问题的有限差分解法。
- Time is sometimes called the fourth dimension. 时间有时被称为第四度空间。
