查询词典 big noise

From the stationary, Gaussian and spectral constructural point of view, we considered that the IR noise can be described with fratcal Gaussian noise , and proposed a scheme for simulating IR noise used in simulation studies.

该方案可对帧间相关性进行模拟。2）提出了一种用于从三维数据中提取目标轨迹的有向高阶相关方法，并对该方法的检测概率、噪声抑制能力及计算量等性能进行了较详细的分析。

Chapter six, in consideration that the worm tongue structure is a key factor affecting noise generation, the mathematical model of centrifugal fan noise increment that is produced by worm tongue structure is established by using of the D—optimizng technology and dimension analysis method, and the spectral property of fan noise produced by worm tongue structure is analysed.

第六章，针对离心风机蜗舌是影响离心风机噪声的关键因素的特点，采用D—最优化技术并结合量纲分析法，建立了离心风机蜗舌引起的噪声增量与蜗舌结构参数的数学模型，并分析了蜗舌结构参数及其对叶轮声辐射频谱特性的影响。

According to the practical observation method of road traffic noise and by using the micro traffic flow theory, a dynamic and stochastic model, which can predict equivalent noise level and statistical noise levels from complex vehicle flow on a multi-lanes road, is established in this paper.

本文根据我国道路交通噪声的实际观测方法，通过引入微观交通流理论，建立了一种可用于多车道混合车流等效声级和统计声级预测的动态随机模型。

Low-level noise can cause higher probability of subjective annoyance. It"s very slightly to people"s health, sleeping and working about the low frequency noise. It was compared with the high frequency noise caused by traffic about sleep, work and rest.

研究结果表明：居住区低频低噪声引起的烦恼度不容忽视，在低频低噪声环境下仍能引起较高的烦恼概率；低频低噪声对人的睡眠、行为及主观生理不适感有影响；低频噪声烦恼度与中高频噪声烦恼度的研究结果在对睡眠、工作及休息上有差异。

By analyzing the characteristics of CCD noise and taking into account the impact of video noise upon Sum Norm Difference and Sum of Absolute Difference of a macro-block,a Noise Variance Adaptive two-stage Successive Elimination Algorithm for block motion estimation is presented.

通过分析CCD 噪声的特点以及噪声项对宏块的和范数差值与绝对差值之和所产生的影响，研究了一种应用于噪声视频的两阶段连续消除算法。

The physics of the noise mechanism that is based on pair of active first detector understands, noise was used to eliminate a technique in circuit, twinkle in order to reduce what the switch in Gilbert first detector is in charge of noise, introduce an additional inductance and switch to be opposite in all the parasitism capacitance of source node is syntonic, the sonic system of a confusion of voices that improves whole circuit is counted and change gain to wait for crucial function index.

基于对有源混频器的噪声机制的物理理解，电路中采用了噪声消除技术，以减少Gilbert型混频器中开关管的闪烁噪声，并引入一个额外的电感和开关对共源节点的寄生电容谐振，改善整个电路的噪声系数和转换增益等关键性能指标。

What is the channel capacity for a teleprinter channel with a 300-Hz bandwidth and a signal-to-noise ratio of 3 dB, where the noise is white thermal noise?

一个电传打印机的带宽是300Hz，信道内所传信号的平均功率与白热噪声功率的比值为3分贝，问其信道容量是多少？

To estimate the high signal to noise ratio in every recorded trace using quantitative method and erase the recorded traces with low signal to noise ratio so as to form a standard trace with high signal to noise ratio.

在形成标准道时，利用定量估计信噪比的方法，对每个记录道分段进行信噪比估计，剔除信噪比低的记录段从而形成高信噪比的标准道。

The paper describes theory of beam noise reduction in adiabatically varying magnetic field, deduces the relation between magnetic field and noise , gives out fourth order Runge-Kutta formula of 2-order differential equation, simulates the effects of different magnetic field on electron motion, the results show good agreement with theory analysis,it confirms that adiabatically varying magnetic field near the cathode can reduce the beam noise.

文章描述了回旋波保护放大器电子束绝热降噪的机理，推导了噪声与磁场的关系和二阶微分方程的四阶精度龙格－库塔法求解电子运动方程的公式，编程计算了电子在不同磁场中的运动轨迹，模拟了不同磁场对电子运动的影响，模拟结果与理论分析相符合，证实了阴极表面附近的缓降磁场可以降低电子束的噪声。

The ordinary edge detection methods such as Sobel and Canny operators are immune to noise, which result in cophasal axes discontinuity due to lack of edge information caused by noise. In order to extract cophasal axes more continuous and immune to noise, a novel approach is developed based on edge detection. Firstly, the median filter and improved Sobel method are used to preprocess seismic section images. Secondly, the threshold value is determined automatically based on variance to detect abnormal information. Finally, the complete cophasal axes are extracted after a post-processing.

由于边缘检测中常用的Sobel算子和Canny算子检测同相轴时对噪声免疫差，常因噪声因素引起边缘信息缺失导致同相轴提取不连续，本文采用中值滤波并对Sobel算子进行改进，对地震剖面图进行预处理，结合均方差自动确定阈值并进行异常检测，提取完整同相轴。

As of Tuesday, Google's results were still censored in China.

截至周二，谷歌的搜索结果仍受中国审查。

In order to make the positive action increase and negative one decrease, the sub-forces of the social factors must be adjusted to form a centripetal force.

在这一过程中，人的主体性发挥是社会有机体健康发展的灵魂。