信噪比

CCD works in field readout mode which can be realized as binning-technology in vertical direction and the noises of video signal are filtered by Correlated Double Sampling, the signal-to-noise ratio of system was enhanced.

采用相关双采样技术滤除了视频信号中的相关噪声，提高了系统的信噪比。

To meet the needs of detection of space faint objects for a telescope with large aperture and short focal,a binding drawtube telescope scheme to detect space object is presented to overcome the shortcomings that focal length grows and field of view shrinks with the increasing of aperture size in traditional telescope for space detection.The software methods are used to stack collected images to restrain background random noises and to improve image Signal to Noise Ratio and the detecting ability of the whole system.

为了满足空间暗弱目标探测对大口径、短焦距望远镜系统的要求，克服普通望远镜随着口径的增加焦距变长、视场变小的不足，提出了将多镜筒捆绑在一起对同一空域进行观测，通过软件的方式对采集的图像进行叠加来抑制背景随机噪声、提高图像的信噪比和系统的整体探测能力的设想。

All phase Walsh transform ; biorthogonal transform ; dual biorthogonal base vectors ; JPEG image compression algorithm ; discrete cosine transform; peak signal to noise ratio

全相位沃尔什变换；双正交变换；对偶双正交基向量； JPEG压缩编码算法；离散余弦变换；峰值信噪比

With selecting earlap as the measuring spot,a multi-layer simulation model of the earlap is established.The transmittance of the earlap model and its distribution regularities under vary beam properties(beam radius,the input energy and its distribution) and model parameters are researched by Monte-Carlo method.

选择耳垂作为测量部位，建立了多层耳垂组织仿真模型，利用Monte-Carlo方法研究了不同光源特性(光束半径，入射能量大小及分布等)及模型参数下耳垂组织模型的光透射能量及分布规律，由透射光能量分布、光电二极管光敏面积和探测灵敏度推出特定测量信噪比要求的入射光能量。

According to the distribution difference, a fast blind detection algorithm based on eigenvalue analysis is presented.

推导了信噪比与检测量之间的关系，进而对检测性能进行了理论分析，并分析了算法的计算复杂度。

Take Zetasizer Nano for example, factors affecting the accuracy of measurement such as electroosmosis effect, cross contamination and shoulder width are discussed. New patent techniques of zeta potential analyzer such as M3-PALS and folded capillary cell are also discussed.

以Zetasizer Nano电位分析仪为例，阐述了其测试原理，分析了电渗运动、交叉污染、展宽、信噪比等影响其测试精度的主要因素，并详细阐述了该电位仪所采用的专利测试新技术——M3-PLAS技术和折叠式毛细管样品池技术，最后展望了zeta电位分析仪的应用前景。

This thesis can be divided into two parts .One is the endpoint detection of noisy speech signals.

本论文根据内容可以分为两个部分：低信噪比下的语音端点检测和语音增强。

For the different property between signal and noise in the intrinsic mode function domain, IMFs product detector is proposed. Under the condition of low SNR and the unknown distribution of noise, Simulation shows that IMFs product detector is superior to Teager energy operator detector.

利用信号和噪声在固有模态函数域中有不同的性态表现，提出了一种固有模态函数积检测器，在低信噪比和背景噪声分布未知条件下，IMF积检测器优于Teager能量算子检测器。

G/ml for neodymium, holmium and erbium, respectively.

以信噪比为3测定钕，钬，铒的检测限分别为0.74，0.85和1.2μg/ml。

Finally, simulation analyzed the relation of delay and SNR to the minimum mean square error.

最后通过仿真分析了时延和信噪比对于自适应滤波器最小均方误差的影响，并给出了源信号的恢复结果，验证了该方法的有效性。

Finally, according to market conditions and market products this article paper analyzes the trends in the development of camera technology, and designs a color night vision camera.

最后根据市场情况和市面上产品的情况分析了摄像机技术的发展趋势，并设计了一款彩色夜视摄像机。

Only person height weeds and the fierce looks stone idles were there.

只有半人深的荒草和龇牙咧嘴的神像。