随机信号

In this algorithm, the direction-of-arrival is assumed to be a discrete random variable with a priori probability density function defined on a set of candidate points. Whether or not the secondary sample is required is based on the a posteriori probability distribution of a set of candidate point"s, which can be calculated from the array received signals. And then, the resulting beamformer is a weighted sum of the beamformers pointed at the latest set of point"s, which are combined according to the value of the a posteriori probability for each pointing direction.

在该算法中，期望信号的波达方向被看作是一个定义在若干候选波达方向上的离散随机变量，由阵列接收信号计算出各候选波达方向的后验概率，并将后验概率的分布作为是否需要进行二次采样的判断标准；随后，对各波达方向上的波束成形权值线性加权，便可得到自适应波束成形器，权系数为各候选波达方向的后验概率值。

Then the digital audio signal is set into segments and DWT is performed. Finally the modulated signal is embedded in the coefficients with relatively large absolute value on middle frequency range detail signal adaptively. The original digital audio signal is necessary when detecting the watermark.

在应用扩频技术的算法中，首先将视觉上可辨的二值水印图像降维为一维序列，再将一维水印序列伪随机排序并与m序列作扩频调制，最后对数字音频信号进行分段离散小波变换，把经过调制的水印信息自适应地嵌入到原音频信号小波分解中等尺度绝对值较大的分量上。

The result of simulation and experiment showed that in follows:Stochastic resonance in the neuron models was not only for periodic signal but alsofor aperiodic signal.

实验结果表明：神经元模型中的随机共振不仅仅局限于周期信号，对于非周期信号也广泛存在。

A type of baseband GMSK signal correlator is presented in this paper.

该文提出一种基带GMSK 信号相关器，并从GMSK 解调信号的相位概率分布函数以及独立同分布随机

Then , aiming at characteristic of MCG data , we design the object of error analysis and make concrete analysis by error theory . We draw the conclusions that MCG signals measured by SQUID include obvious random errors and no system errors and crassitude errors .

本文根据心磁信号的测量过程，分析了测量过程中可能产生的误差，针对心磁数据的特点设计了误差分析对象，应用误差理论进行分析计算，得出了通过SQUID测得的心磁信号包含明显的随机误差，无根据怀疑存在系统误差和粗大误差的结论。

Discrete spectrum existed in power spectrum of output single are weaken and the power spectrum become consecutive because of using randomized modulation.

随机调制技术较好地减小了输出信号中的离散功率谱，使输出信号的功率谱趋于连续。

In order to investigate the effect of nonlinear system on SR, Duffing system is adopted and an algorithm based on Duffing system is proposed.

为了考察非线性系统对弱信号检测效果的影响，选用了Duffing方程作为随机共振的非线性系统，提出了基于Duffing系统的随机共振算法。

Simulation experiments' data show that by using this methods it can precisely generate non Gaussian correlate random sequence with specified probability density and power spectrum,and reproduce verisimilarly the scatter coherent video signal of radar sea clutter containing both amplitude and phase.

其中迭代算法用来计算非线性变换过程中高斯序列相关性的变化，而随机向量法用来完成线性变换，仿真实验数据证明利用这种方法可精确地产生具有指定概率密度和功率谱的非高斯随机序列，逼真地复现既包含振幅又包含相位的雷达海杂波相干视频散射信号。

The Doppler effect of moving scatterers causes the radar signals to appear as stochastic processes. Some useful knowledge about the clouds and precipitations can be obtained by analysing the statistical characteristics of these processes.

运动质点的多普勒效应使它们散射的雷达信号呈现为一种随机过程，对这随机过程的统计特性进行分析就能够推断云和降水的微物理或运动学的状况。

In this paper,we present a method to enhance the signal/noise ratio of three-component seismic data by an adaptive polarization filter.To achieve this aim,the matrix of spectrum density is constructed,after the introduction of multi-taper method,to compute th...

本文在引入多窗谱分析方法的基础上，通过对谱密度矩阵特征问题的求解提取三分量地震记录的偏振参数，实现频率域偏振分析；根据所求得的偏振参数以及随机噪声和有效信号的偏振特性差异，设计相应的自适应滤波器，通过该滤波器的滤波作用，最终实现压制随机噪声的目的。

The labia have now been sutured together almost completely.The drains and the Foley catheter come out at the top.

此刻阴唇已经几乎完全的缝在一起了，排除多余淤血体液的管子和Foley导管从顶端冒出来。

To get the business done, I suggest we split the difference in price.

为了做成这笔生意，我建议我们在价格上大家各让一半。