噪声抑制

The experiments shown that the system has many merits, such as highstability, insusceptible by environmental factors, high speed and high degree of accuracy, it can measure multi-component.

5分析了光纤近红外测量系统的噪声来源及抑制方法，探讨提高系统稳定性和可靠性的保证措施。

In this algorithm, multiple lag parameters and the spectrum correlation property are used to exploit the cyclic statistical information and time domain characteristics of signals sufficiently and ef-fectively. Moreover, this method remedies the lack of space domain information, and it is an extension from space domain to space-time domain. Therefore the ability to select the desired signals and supress the noise and interfering signals is improved.

该算法在利用信号的谱相关特性的同时使用了多个时延，将波束形成技术从空域扩展到了时空域，弥补了空域信息的不足，充分利用了信号的循环统计信息和信号的时域特征，提高了信号的选择能力和对干扰、噪声的抑制能力。

In the AC servo control system, using digital low-pass filter can restrain current feedback noise and improve the resolving power of speed feedback, but it may lead to phase lag of feedback signal and directly influence the response speed.

交流伺服控制中采用数字低通滤波可以抑制电流反馈噪声，提高速度反馈分辨率，但同时会带来反馈信号的相位滞后，将直接影响响应速度。

In order to restrain the high noise in low voltage power line, a spread spectrum scheme for PLC is also designed in this system.

为抑制我国低压电力线环境上的严重噪声，本文也为该系统设计了适合于电力线通信的扩频方案。

At first, the coordinate is changed and then the method about linear programming in radar measure ordination is used to estimate system error.

通过仿真表明，利用误差修正可以抑制随机噪声，较为准确地估计各雷达站的系统误差。

This approach effectively overcomes the shortcoming of the grey level intensity based detection approaches. Not only it can extract the local extremum along with the contour, but also it is robust to the noise in the range images.

该方法克服了基于强度特征的检测方法中存在的一些缺陷，能够有效得提取关键点在轮廓方向上的极值性，并对轮廓上的噪声也有很好的抑制效果。

This article introduced the antijamming in the NC system design,from the shield (including electric field shield ,magnetic screen and electromagnetic field shield ) designs mentions,added the absorbing circuit to the perceptual load to suppress the transient state noise to give the specify,might avoid the NC system which disturbed creates softly breakdown.

本文介绍了抗干扰在数控系统中的设计，从屏蔽(包括电场屏蔽、磁场屏蔽和电磁场屏蔽)设计谈起，对感性负载加吸收电路来抑制瞬态噪声做了详细说明，可避免干扰造成的数控系统的"软"故障。

By comparing the common edge detection algorithms, the magniloquent Kirsch edge detection algorithm is selected to process the result of background subtraction. The result of edge detection is denoised by mathematical morphology method. Shadow edge restrained arithmetic and detection-line-based background updating method are presented. Shadow edge restrained arithmetic reduces vehicle shadow edge efficaciously. Background updating precision is improved by presented background updating method.

在处理过程中，对常用的背景差方法进行了改进，有效的保留了车辆目标信息；通过对常用的边缘检测方法比较，选用了突出边缘的Kirsch边缘检测方法对背景差后的图像进行了边缘检测；使用形态除噪算法对边缘检测的结果进行了噪声去除；提出了阴影边缘去除算法和基于检测线的背景更新方法，阴影边缘去除算法有效的抑制了车辆阴影边缘，背景更新方法则提高了背景更新的精度。

In the measure amplification circuit, direct-current or low frequency signal come from a common sensor , conveying in only rhyme fashion way after amplification, In typical situation, serviceable signal maximum amplitude probable only have a certain number or amount millivolt, but common mode noise suppression may be up to several volt, as a result it is significant to the factor of the amplification input drift and noise etc for total precision, the amplification in itself common mode restraints features is also equally binding problem.

在测量用的放大电路中，一般传感器送来的直流或低频信号，经放大后用单端方式传输，在典型情况下，有用信号的最大幅度可能仅有若干毫伏，而共模噪音可能高到几伏，故放大器输入漂移和噪声等因素对于总的精度至关重要，放大器本身的共模抑制特性也是同等重要的问题。

It lays a good foundation for minutia points extracting and fingerprint matching.

很好地抑制了图象的噪声，增强了指纹的结构特征，为特征点的提取和比对奠定了良好的基础，并经过适当的简化，可以用于嵌入式系统。

They weren't aggressive, but I yelled and threw a rock in their direction to get them off the trail and away from me, just in case.

他们没有侵略性，但我大喊，并在他们的方向扔石头让他们过的线索，远离我，以防万一。

In slot 2 in your bag put wrapping paper, quantity does not matter in this case.

在你的书包里槽2把包装纸、数量无关紧要。